All analysis was generated autonomously, without human review. Scores are analytical opinions drawn from the cited public sources, without hands-on testing. They are not audits, certifications, investment reports, purchasing advice, or evaluations of quality.
Mimecast is a long-running email-security company that serves more than 42,000 customers and reported $501.4 million in fiscal-2021 revenue before Permira took it private. It has been acquiring across insider risk, collaboration governance, and adjacent human-risk products to reposition toward what it calls human risk management, and it named Ranjan Singh chief executive in 2026. Mimecast pursues that move while overlaying the cloud mailboxes Microsoft and Google operate, and it concedes in an SEC filing that those owners offer functions similar to its own in their core mailbox services. It suits organizations consolidating email security, archiving, and training with one vendor, and it is easier to displace where a buyer treats mailbox-native protection as enough.
| Description | Mimecast is a cybersecurity company whose API-enabled human risk platform protects organizations against email and collaboration threats, pairing advanced email security with data protection, archiving, security awareness training, and insider risk management. | [f1] |
|---|---|---|
| Founded | 2003 | [f1] |
| HQ | London, United Kingdom | [f2] |
| Latest funding | Take-private acquisition by Permira valued at approximately $5.8 billion (completed May 2022) | [f3] |
| Product | What it does |
|---|---|
| Advanced Email Security | Email security that blocks phishing, ransomware, social engineering, payment fraud, and impersonation, in gateway or API deployment. |
| Engage Security Awareness | Security awareness training that reduces human risk through continuous, behavior-based intervention and education. |
| Incydr Data Protection | Insider risk management that protects customer data, source code, and intellectual property from loss and theft. |
| Aware Governance and Compliance Suite | Protects collaboration data from loss, non-compliance, and threats across platforms such as Slack and Microsoft Teams. |
| Collaboration Threat Protection | Defends against attacks launched through Microsoft Teams, OneDrive, and SharePoint. |
| DMARC Analyzer | DMARC management that helps organizations control their sending domains, improve email deliverability, and reduce domain spoofing. |
| Email Archive | Cloud archive that simplifies compliance, cuts e-discovery time and cost, and ensures communications data is retained and never lost. |
Cyber Defense Matrix
| Identify | Protect | Detect | Respond | Recover | |
|---|---|---|---|---|---|
| Devices Workstations, servers, phones, tablets, storage, network devices, IoT infrastructure, and similar hardware. | |||||
| Applications Software, interactions, and application flows on the devices. | |||||
| Networks Connections and traffic flowing among devices and apps, plus communication paths. | |||||
| Data Content at rest, in transit, or in use across devices, apps, and networks. | |||||
| Users The people using the devices, apps, networks, and data. |
Mimecast Advanced Email Security defends mailboxes, Collaboration Threat Protection covers Teams and SharePoint, Incydr and Email Archive guard enterprise data, and Engage awareness training addresses human risk. These lines are mapped to the Cyber Defense Matrix. [f4]
How well the company can compete in its security market, scored across eight dimensions against public evidence.
| Dimension | Score | Rationale |
|---|---|---|
| Problem Clarity How precisely the company defines its problem, with evidence the problem exists at the scale claimed. | 3/5 | Mimecast frames email and human-driven attacks qualitatively, and Gartner's dedicated Email Security Platforms category signals the pain is recognized at the category level, but the problem is generic to the category rather than independently quantified for Mimecast's own framing. [s1, s5, s7] |
| Capability Depth How specific the technical capabilities are, with evidence beyond marketing claims such as docs and third-party validation. | 3/5 | Mimecast's product pages document a platform spanning AI-powered email security, collaboration protection, insider-risk data protection, archiving, and awareness training, real and credible capability, but its external reference is a vendor-reported Gartner placement, with no independent benchmark or technical evaluation in the record. [s2, s5, s13] |
| Market Timing Whether the market is ready for this product, with evidence that buyers are actively seeking solutions. | 4/5 | Email security is a mature, densely contested category, with Mimecast's SEC filing enumerating roughly a dozen rivals and Gartner maintaining a dedicated Email Security Platforms evaluation, signals the market is actively buying rather than emerging. [s14, s5, s1] |
| Team Credibility Demonstrated domain expertise with public signals such as prior exits, publications, and industry recognition. | 4/5 | Peter Bauer and Neil Murray founded Mimecast in 2003, and it later listed on Nasdaq in 2015 and reached a $5.8 billion take-private, a verifiable in-domain build and exit, while in June 2026 the board promoted product chief Ranjan Singh to CEO as Marc van Zadelhoff moved to a board advisory role. [s4, s9, s8, s3] |
| GTM Proof Evidence of actual traction (customers, revenue signals, partnerships) beyond stated intentions. | 5/5 | As a public company Mimecast filed revenue of $501.4 million for fiscal 2021, up from $340.4 million two years earlier, a regulator-filed disclosure of substantial traction, with a press-relayed customer count near 39,000 and a vendor-reported Gartner Leader placement as supporting signals. [s6, s10, s5] |
| Funding Efficiency Whether funding matches go-to-market ambition, with signs of capital-efficient growth. | 3/5 | Mimecast funds visible output, a broad product suite, a large customer base, and multiple acquisitions, on a revenue base that grew from $340.4 million to $501.4 million as a public company, but private ownership discloses no margins or capital history, so the efficiency of that output cannot be confirmed. [s6, s8, s3, s5] |
| Category Clarity Whether the company creates or fits a recognizable category that buyers can quickly place in their stack. | 4/5 | Mimecast fits the established email-security category, which Gartner placed it in as a 2024 Leader and which its own filings map against a named field of rivals, so buyers locate it without coaching, though the Gartner placement is vendor-displayed and the newer human-risk framing is still settling. [s7, s5, s1] |
| Incumbent Defensibility How vulnerable the core value proposition is to absorption as a feature by a platform vendor. | 3/5 | Archiving, a large install base, and added insider-risk and collaboration coverage give Mimecast real embedding, but it overlays the cloud mailboxes Microsoft and Google operate, and its own filing concedes those owners bundle similar functions, leaving the core email defense more absorbable than a structural moat. [s7, s10, s2] |
Mimecast sells against email-borne and human-driven attacks. The company frames phishing, ransomware, social engineering, payment fraud, and impersonation as the threats that target people, and it positions a connected human risk platform that pairs email defense with data, collaboration, and awareness protection.
Category and market signals corroborate the problem. Gartner created a dedicated Email Security Platforms category, Mimecast's own SEC filing concedes that the mailbox platform owners offer similar functions, and the 2021 SolarWinds certificate compromise showed that email-security vendors are high-value targets in their own right.
The buyer base is broad and global. Mimecast served a base near 39,000 customers as a public company and now reports more than 42,000 in over 100 countries, a base of mid-market and enterprise organizations that consolidate email security, archiving, and training with one vendor. [s5, s7, s10, s3]
The platform pairs AI-powered email defense with adjacent protection. Mimecast Advanced Email Security blocks sophisticated email attacks in Cloud Gateway or Cloud Integrated deployment, and the suite adds Collaboration Threat Protection for Microsoft Teams, OneDrive, and SharePoint, Incydr insider-risk data protection, Aware collaboration governance, Email Archive, and Engage awareness training.
Capability broadened through acquisition. Mimecast expanded the platform by buying companies in insider risk, collaboration governance, and awareness, adding the Incydr product that keeps source code and intellectual property from loss and theft and Aware governance for collaboration data.
External scrutiny cuts both ways. A vendor-reported Gartner Leader placement is the main external reference for the platform's breadth, while independent technical scrutiny has surfaced flaws, including an NVD-listed arbitrary-file-access issue in the acquired Incydr product, the normal vulnerability exposure of a broad suite assembled by purchase. [s2, s5, s13]
Mimecast competes from the middle of a contested category. It overlays the cloud mailboxes its customers run, and Mimecast's own annual report concedes that Microsoft and Google offer functions as part of their core mailbox services that may be similar to its offerings, so the standalone case depends on staying ahead of the bundled option. The repositioning toward human risk management is its attempt to compete on breadth rather than the inbox alone.
The category's two ends squeeze the middle. Mimecast's own SEC filing enumerates the rival field, from gateway peers such as Barracuda and larger-scale incumbents such as Proofpoint to AI-native challengers such as Abnormal Security, all contesting the same enterprise budgets. Mimecast answers with a platform that pairs email defense with archiving, insider risk, and awareness.
The durable counter is breadth and embedding rather than a single feature. Archiving holds regulated communications, the install base spans tens of thousands of customers, and the added insider-risk and collaboration coverage widen the surface, though the core email defense remains more absorbable than a structural moat. [s7, s14, s2, s10]
Mimecast runs an enterprise and mid-market go-to-market organization at scale. It runs a built-out sales and channel motion well past the founder-led stage, selling both directly and through managed service providers and resellers.
Independent evidence corroborates the scale. Mimecast filed revenue of $501.4 million for fiscal 2021, up from $340.4 million two years earlier, the firmest traction signal in the record, while CyberScoop relayed a vendor-stated base near 39,000 customers and a vendor-reported Gartner Leader placement adds analyst recognition.
Ownership coincides with an acquisition-led growth motion. As TechCrunch reported, Permira announced a $5.8 billion all-cash take-private in 2021, following competitor Proofpoint's private-equity route, and Mimecast has since expanded the platform through the acquisitions behind its Incydr and Aware products rather than organic build alone. [s6, s10, s9, s2, s5]
The founders built a durable company. Peter Bauer and Neil Murray founded Mimecast in 2003, and the company grew into a global email-security business that listed on Nasdaq in 2015 and reached a $5.8 billion take-private, a verifiable multi-decade track record in the category.
Leadership turned over in June 2026. The board promoted Ranjan Singh, who joined in 2025 as Chief Product and Technology Officer, to chief executive, with Marc van Zadelhoff moving to a board advisory role. Singh arrived from Kaseya, where he was Chief Product Officer over a large software portfolio.
Private-equity ownership shapes the mandate. Under Permira, Mimecast pursued an acquisition-led strategy and folded the acquired products into one platform, leaving commercial adoption of the broadened suite as the test the new leadership must now manage. [s4, s8, s9, s3]
Mimecast handles sensitive communications at scale, which sets a high trust bar. The platform filters, archives, and governs email and collaboration data for tens of thousands of organizations, so a vendor compromise or a faulty model update would reach the communication flows those businesses depend on.
The 2021 SolarWinds certificate compromise is the defining trust event in the record. The threat actor behind the SolarWinds campaign compromised a Mimecast-issued certificate that authenticated Mimecast products to Microsoft 365, may have exfiltrated encrypted customer credentials, and downloaded source code that Mimecast said was incomplete and insufficient to rebuild its service. Mimecast engaged Mandiant and remediated.
Compliance is a core part of the value and reaches into federal procurement. The Email Archive product helps customers meet retention and e-discovery obligations, and Incydr Gov, the federal offering of the acquired insider-risk line, is a FedRAMP-authorized SaaS solution listed in the FedRAMP Marketplace (s15, s16). [s11, s12, s2, s15, s16]
| Company | Relationship | Note | Compare |
|---|---|---|---|
| Proofpoint | competes with | ||
| Abnormal | competes with | N/AThese companies operate in different domains, so the scores reflect readiness in different markets. | |
| Microsoft | competes with | N/AMicrosoft is scored by product line, not as a whole company, so there is no company-wide column to compare. Open its profile to compare a specific product. | |
| Barracuda Networks | competes with | N/AWe captured the evidence for these companies under different evidence-model versions (v1 vs v2), so the totals were scored under different conditions and are not directly comparable. |
Add analyzed competitors to compare them side by side with Mimecast.
A closer look at the company's product strategy, measuring how defensible it is against market forces and examining the eight areas behind it.
reinforce or reposition
Mimecast holds ground through its compliance archive and the breadth of its consolidated suite rather than detection a rival could not match. The archive retains regulated communications and raises exit friction, folding email, awareness, and insider risk into one platform raises the cost of leaving, and Incydr Gov's FedRAMP authorization opens federal buyers. The weaknesses are structural. It overlays the cloud mailboxes Microsoft and Google operate, and its own SEC filing concedes those owners bundle similar functions, its disclosed customer mix is unquantified, and the record names no non-public corpus behind its telemetry. It is harder to dislodge where the archive and suite embed with regulated buyers, and exposed where a buyer treats email security as a feature of the mailbox.
| Dimension | Score | Rationale |
|---|---|---|
| Value Delivery Does the product sell software as the product, or judgment, trust, or accountability with software as the delivery mechanism. | 2/3 | Mimecast sells software the customer configures across email, archiving, awareness, and insider risk, but it also operates a human layer: the product suite advertises round-the-clock analyst response to every user-reported email, alongside continuity and archive commitments, so vendor-operated service blends with the code. |
| Switching Cost How expensive leaving is for a customer: data portability, integrations, learned workflows, network effects, regulatory data residency. | 2/3 | A customer that consolidates email security, awareness, insider risk, and a compliance archive into Mimecast faces real exit friction, retained communications, tuned policies, and suite consolidation, but the record documents the archive's retention role rather than migration scope or observed replacement difficulty, so the friction is credible without evidencing deep multi-year lock-in. |
| Compliance Moat Whether certifications, liability acceptance, or audit trails block an easy replacement. | 2/3 | Mimecast's archive helps customers meet retention and e-discovery obligations, and Incydr Gov is marketed as a FedRAMP-authorized SaaS offering on the vendor's plans page, a federal credential a competitor must independently earn. The reviewed record identifies no mandate naming Mimecast specifically, so the credentials gate federal procurement rather than block replacement. |
| Problem Complexity Whether the product requires ML, optimization, real-time systems, or years of specialized expertise. | 3/3 | Detecting socially engineered email attacks with AI across tens of thousands of customers plus insider-risk and collaboration monitoring is years of specialized engineering, operating at a vendor-stated scale of 24 trillion analyzed behavioral signals a year against a 20-plus-year baseline. |
| Buyer Profile Whether buyers are SMB operators, mid-market IT teams, or regulated enterprises and governments with procurement gates. | 2/3 | Mimecast reports more than 42,000 customers in over 100 countries, and its public examples span SMB through enterprise with the mix unquantified, a broad base rather than the regulated large-enterprise concentration that anchors the top of the category. |
| Layer Whether the product is an end-user application, a platform with application features, or infrastructure other applications depend on. | 2/3 | Mimecast runs as a Cloud Gateway in the mail path and as a communications archive of record, deeper than an API overlay, though it sits on the cloud mailboxes the platform owners operate rather than as infrastructure other builders depend on. |
| Proprietary Data, Content, or IP Whether the product accumulates datasets, content licenses, or IP that a rival cannot recreate from scratch. | 1/3 | Mimecast states it analyzes 24 trillion behavioral signals a year against a 20-plus-year baseline, vendor-sized scale for its cross-customer telemetry, but the record names no non-public corpus or curated dataset behind that figure, so the evidenced asset is unnamed telemetry rather than a demonstrated data moat. |
Mimecast targets organizations that treat email and human risk as a distinct security purchase. The company frames the spectrum of human-driven threats, phishing and business email compromise among them, and Gartner's Email Security Platforms category shows email security is a recognized purchasing category.
The install base is broad and global. Mimecast served a base near 39,000 customers as a public company and now reports more than 42,000 in over 100 countries, a base whose public examples include SMB and enterprise organizations while the mix remains unquantified.
The segment is widening through the human-risk repositioning. The acquisitions in insider risk, collaboration governance, and human-risk management extend Mimecast from the inbox toward security, compliance, and risk functions beyond the email administrator.
The platform pairs AI-powered email defense with adjacent protection. Mimecast Advanced Email Security blocks sophisticated email attacks in Cloud Gateway or Cloud Integrated deployment per the vendor's product pages, and the suite adds Collaboration Threat Protection, Incydr insider-risk data protection, Aware collaboration governance, Email Archive, and awareness training.
The claimed advantage is intelligence applied across the human-risk surface. Mimecast positions the suite as one connected platform rather than a set of point tools, and a vendor-reported Gartner Leader placement in email security platforms is the external reference point for the email core rather than an evaluation of the broader suite.
Acquired breadth carries acquired exposure. Independent technical scrutiny surfaced an NVD-listed arbitrary-file-access issue in the acquired Incydr product, a reminder that folding purchased code into one platform widens the attack surface the vendor must now secure.
Mimecast runs an enterprise and mid-market go-to-market organization at scale. It runs a built-out sales and channel motion well past the founder-led stage, selling both directly and through managed service providers and resellers.
Independent evidence corroborates the scale. Mimecast filed revenue of $501.4 million for fiscal 2021, up from $340.4 million two years earlier, the firmest traction signal in the record, while CyberScoop relayed a vendor-stated base near 39,000 customers and a vendor-reported Gartner Leader placement adds analyst recognition.
Ownership and expansion are both documented. As TechCrunch reported, Permira announced a $5.8 billion all-cash take-private in 2021, following competitor Proofpoint's private-equity route, and Mimecast has expanded the platform through the acquisitions behind its Incydr and Aware products rather than organic build alone.
Mimecast publishes no list prices on the reviewed pages, the posture of a vendor whose deals are negotiated with security organizations and intermediated by partners. Vendors that route pricing through sales and the channel typically target negotiated transactions, and Mimecast fits that pattern.
The unit of charge is not disclosed in the fetched record. A platform spanning email, collaboration, archiving, and insider risk could price per mailbox, per user, or per module, and the public pages do not settle which, so a buyer cannot infer the unit from the site alone.
Packaging is consolidating around the platform. The connected human risk framing points to a suite sale rather than discrete tools, which favors land-and-expand from email into the adjacent modules Mimecast acquired, though the public materials do not detail the bundle economics.
Mimecast delivers from the cloud and meets the customer where the mail flows. Advanced Email Security runs as a Cloud Gateway in the mail path or in Cloud Integrated deployment, and Email Archive retains communications for compliance.
The delivery model concentrates supply-chain responsibility in the vendor. The 2021 incident, in which the SolarWinds threat actor compromised a Mimecast-issued certificate that authenticated Mimecast products to Microsoft 365, showed how a vendor-held credential can become the attacker's path into customer tenants, an operational risk inherent to a connector sitting between the customer and Microsoft.
The acquired modules add integration work. Folding insider-risk, collaboration-governance, and human-risk products into one platform is a delivery undertaking in itself, and the connected-platform promise depends on that integration landing for customers.
Mimecast handles sensitive communications at scale, which sets a high trust bar. The platform filters, archives, and governs email and collaboration data for tens of thousands of organizations, so a vendor compromise or a faulty model update would reach the communication flows those businesses depend on.
The 2021 SolarWinds certificate compromise is the defining trust event in the record. The threat actor behind the SolarWinds campaign compromised a Mimecast-issued certificate, may have exfiltrated encrypted customer credentials, and downloaded source code that Mimecast said was incomplete and insufficient to rebuild its service. Mimecast engaged Mandiant and remediated, a handled but serious supply-chain breach.
Compliance is a core part of the value and reaches into federal procurement. Email Archive helps customers meet retention and e-discovery obligations, and Incydr Gov, the federal offering of the acquired insider-risk line, is marketed on the vendor's plans page as a FedRAMP-authorized SaaS solution for government agencies (s14, s15).
Mimecast positions itself as one connected human risk platform rather than a bundle of point products. The suite integrates email, collaboration, archiving, awareness, and insider risk, and it connects to the Microsoft environment and collaboration tools such as Teams and Slack that its customers already run.
Acquisitions are the engine of the platform. Mimecast folded purchased products in insider risk, collaboration governance, and human-risk management into the suite, and the integration of those businesses is the strongest evidence of the platform thesis.
The dependency cuts the other way too. Mimecast overlays the cloud mailboxes platform owners control, and its own SEC filing concedes that Microsoft and Google offer functions as part of their core mailbox services that may be similar to its offerings, so its ecosystem position rests on staying more useful than the bundled options those owners ship.
The founders built a durable company. Peter Bauer and Neil Murray founded Mimecast in 2003, and the company grew into a global email-security business that listed on Nasdaq in 2015 and reached a $5.8 billion take-private, a verifiable multi-decade track record in the category.
Leadership turned over in June 2026. The board promoted Ranjan Singh, who joined in 2025 as Chief Product and Technology Officer, to chief executive, with Marc van Zadelhoff moving to a board advisory role. Singh arrived from Kaseya, where he was Chief Product Officer over a large software portfolio.
The expansion is acquisition-led. Mimecast acquired and folded products into one platform, leaving commercial adoption of the broadened suite as the test the new leadership must now manage.
| Id | Source | Tier | Accessed |
|---|---|---|---|
| f1 | About Mimecast (Company Overview) | official | 2026-06-24 |
| f2 | Mimecast Limited Form 10-K cover page, principal executive offices (SEC EDGAR) | regulatory | 2026-06-28 |
| f3 | Permira Completes Acquisition of Mimecast | press | 2026-06-24 |
| f4 | Mimecast Product Suite | official | 2026-06-24 |
| Id | Source | Tier | Accessed |
|---|---|---|---|
| s1 | Mimecast homepage (live) “Human Risk Management & Advanced Email Security. AI changed work. AI expanded the threats. Mimecast names Ranjan Singh as CEO to lead its next chapter.” | official | 2026-06-28 |
| s2 | Mimecast Product Suite “Advanced Email Security: Defend against the most sophisticated email attacks with AI-powered Email Security. Incydr Data Protection. Aware Governance and Compliance Suite. Collaboration Threat Protection. Email Archive.” | official | 2026-06-24 |
| s3 | About Mimecast (Company Overview) “More than 42,000 businesses worldwide trust Mimecast. 2003 Founded by Peter Bauer and Neil Murray. 42,000+ Customers in more than 100 countries. 2000+ Employees worldwide.” | official | 2026-06-24 |
| s4 | Mimecast Appoints Ranjan Singh as Chief Executive Officer “Ranjan Singh has been named Chief Executive Officer, effective immediately. Singh succeeds Marc van Zadelhoff, who will continue to support the company as a Board advisor. Singh joined Mimecast in 2025 as Chief Product & Technology Officer.” | official | 2026-06-28 |
| s5 | Mimecast Named a Leader in 2024 Gartner Magic Quadrant for Email Security Platforms (vendor-displayed) “Mimecast has been recognized as a Leader in the Magic Quadrant for Email Security Platforms. The evaluation was based on specific criteria that analyzed our overall Completeness of Vision and Ability to Execute.” | official | 2026-06-28 |
| s6 | Mimecast Limited Form 10-K, fiscal year ended March 31, 2021 (SEC EDGAR) “For the fiscal years ended March 31, 2021, 2020 and 2019, our revenue was $501.4 million, $427.0 million and $340.4 million, respectively.” | regulatory | 2026-06-28 |
| s7 | Mimecast Limited Form 10-K, competition risk factor (SEC EDGAR) “Google Inc. and Microsoft Corporation, who offer functions and tools as part of their core mailbox services that may be, or be perceived to be, similar to our offerings.” | regulatory | 2026-06-28 |
| s8 | Mimecast Limited definitive merger proxy (DEFM14A), Permira take-private (SEC EDGAR) “Company Shareholders will be entitled to receive per share consideration of $80.00 in cash, subject to any required withholding of taxes, for each Company share that you own. Buyer is affiliated with Permira Advisers LLC.” | regulatory | 2026-06-28 |
| s9 | TechCrunch: Permira plans to take email security firm Mimecast private in a $5.8B all-cash deal (Ingrid Lunden) “Nine months after competitor Proofpoint was scooped up by Thoma Bravo for $12.3 billion, Mimecast is also going the private equity route. Today the security company announced that Permira would be taking Mimecast private in a $5.8 billion all-cash deal. Mimecast has been public since 2015.” | press | 2026-06-28 |
| s10 | CyberScoop: Mimecast confirms SolarWinds attackers breached security certificate “Mimecast, which says it has 39,000 customers around the world, offers an attractive target for spies looking to burrow into high-value organizations. A stolen software certificate of this type could allow an intruder to lurk undetected and spy on Mimecast clients for months.” | press | 2026-06-28 |
| s11 | The Hacker News: Mimecast Finds SolarWinds Hackers Stole Some of Its Source Code (Ravie Lakshmanan) “Mimecast revealed that the state-sponsored SolarWinds hackers who broke into its internal network downloaded source code out of a limited number of repositories. Mimecast said the source code was incomplete and would be insufficient to build and run any aspect of the Mimecast service.” | press | 2026-06-28 |
| s12 | Cybersecurity Dive: Mimecast attributes supply chain attack to SolarWinds hackers “We can confirm that a certificate provided by Mimecast was compromised by a sophisticated actor. This certificate enables their customers to connect certain Mimecast applications to their M365 tenant.” | press | 2026-06-28 |
| s13 | NVD: CVE-2026-50590, Mimecast Incydr arbitrary file access “In Mimecast Incydr before 2.6.0, arbitrary file access can occur.” | research | 2026-06-28 |
| s14 | Mimecast Limited Form 10-K, competitor list (SEC EDGAR) “Email Security: Barracuda Networks, Inc., Google, Microsoft Exchange Online Protection, Proofpoint, Inc., Symantec Corporation, Agari Data, Inc., Cisco Systems Inc., Avanan, Inc., GreatHorn, Inc., IronScales, Ltd., INKY Technology Company, and Abnormal Security Corporation.” | regulatory | 2026-06-28 |
| s15 | Mimecast Incydr plans page, Gov tier (resolved from the Incydr federal-agencies URL) “A FedRAMP-authorized SaaS solution ideal for government agencies, contractors, or related entities.” | official | 2026-07-09 |
| s16 | Help Net Security: Code42 adds new insider threat detectors for government security teams “Code42 announced the FedRAMP Authorized Code42 Incydr Gov solution has added new data exfiltration detectors for cloud and email systems.” | press | 2026-07-09 |
| Id | Source | Tier | Accessed |
|---|---|---|---|
| s1 | Mimecast homepage (live) “Human Risk Management & Advanced Email Security. AI changed work. AI expanded the threats. Mimecast names Ranjan Singh as CEO to lead its next chapter.” | official | 2026-06-28 |
| s2 | Mimecast Product Suite “Advanced Email Security: Defend against the most sophisticated email attacks with AI-powered Email Security. Incydr Data Protection. Aware Governance and Compliance Suite. Collaboration Threat Protection. Email Archive. 24×7 analyst response to every user-reported email” | official | 2026-07-14 |
| s3 | About Mimecast (Company Overview) “More than 42,000 businesses worldwide trust Mimecast. 2003 Founded by Peter Bauer and Neil Murray. 42,000+ Customers in more than 100 countries. Analyzing 24 trillion behavioral signals annually, Mimecast draws on a 20+ year behavioral baseline” | official | 2026-07-14 |
| s4 | Mimecast Appoints Ranjan Singh as Chief Executive Officer “Ranjan Singh has been named Chief Executive Officer, effective immediately. Singh succeeds Marc van Zadelhoff, who will continue to support the company as a Board advisor. Singh joined Mimecast in 2025 as Chief Product & Technology Officer.” | official | 2026-06-28 |
| s5 | Mimecast Named a Leader in 2024 Gartner Magic Quadrant for Email Security Platforms (vendor-displayed) “Mimecast has been recognized as a Leader in the Magic Quadrant for Email Security Platforms. The evaluation was based on specific criteria that analyzed our overall Completeness of Vision and Ability to Execute.” | official | 2026-06-28 |
| s6 | Mimecast Limited Form 10-K, fiscal year ended March 31, 2021 (SEC EDGAR) “For the fiscal years ended March 31, 2021, 2020 and 2019, our revenue was $501.4 million, $427.0 million and $340.4 million, respectively.” | regulatory | 2026-06-28 |
| s7 | Mimecast Limited Form 10-K, competition risk factor (SEC EDGAR) “Google Inc. and Microsoft Corporation, who offer functions and tools as part of their core mailbox services that may be, or be perceived to be, similar to our offerings.” | regulatory | 2026-06-28 |
| s8 | Mimecast Limited definitive merger proxy (DEFM14A), Permira take-private (SEC EDGAR) “Company Shareholders will be entitled to receive per share consideration of $80.00 in cash, subject to any required withholding of taxes, for each Company share that you own. Buyer is affiliated with Permira Advisers LLC.” | regulatory | 2026-06-28 |
| s9 | TechCrunch: Permira plans to take email security firm Mimecast private in a $5.8B all-cash deal (Ingrid Lunden) “Nine months after competitor Proofpoint was scooped up by Thoma Bravo for $12.3 billion, Mimecast is also going the private equity route. Today the security company announced that Permira would be taking Mimecast private in a $5.8 billion all-cash deal. Mimecast has been public since 2015.” | press | 2026-06-28 |
| s10 | CyberScoop: Mimecast confirms SolarWinds attackers breached security certificate “Mimecast, which says it has 39,000 customers around the world, offers an attractive target for spies looking to burrow into high-value organizations. A stolen software certificate of this type could allow an intruder to lurk undetected and spy on Mimecast clients for months.” | press | 2026-06-28 |
| s11 | The Hacker News: Mimecast Finds SolarWinds Hackers Stole Some of Its Source Code (Ravie Lakshmanan) “Mimecast revealed that the state-sponsored SolarWinds hackers who broke into its internal network downloaded source code out of a limited number of repositories. Mimecast said the source code was incomplete and would be insufficient to build and run any aspect of the Mimecast service.” | press | 2026-06-28 |
| s12 | Cybersecurity Dive: Mimecast attributes supply chain attack to SolarWinds hackers “We can confirm that a certificate provided by Mimecast was compromised by a sophisticated actor. This certificate enables their customers to connect certain Mimecast applications to their M365 tenant.” | press | 2026-06-28 |
| s13 | NVD: CVE-2026-50590, Mimecast Incydr arbitrary file access “In Mimecast Incydr before 2.6.0, arbitrary file access can occur.” | research | 2026-06-28 |
| s14 | Mimecast Incydr plans page, Gov tier (resolved from the Incydr federal-agencies URL) “A FedRAMP-authorized SaaS solution ideal for government agencies, contractors, or related entities.” | official | 2026-07-09 |
| s15 | Help Net Security: Code42 adds new insider threat detectors for government security teams “Code42 announced the FedRAMP Authorized Code42 Incydr Gov solution has added new data exfiltration detectors for cloud and email systems.” | press | 2026-07-09 |
This site is an experimental research aid created by Zeltser Security Corp. All its data gathering and analysis was performed autonomously without human review, and it can contain errors of fact, interpretation, and judgment that a human reviewer might catch.
The analyses are statements of opinion, not statements of fact. Machine analysis produced the scores, summaries, and matrix placements by weighing the public sources each page cites, and reasonable people can weigh the same sources differently. Where a page states a fact, it cites the public source and the date it was checked, and the statement is only as accurate as that source. Unless a profile expressly says otherwise, the analysis involves no hands-on testing and no independent validation of any company's products or services.
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