Work

protected.

Work

protected.

From our legacy in email to the new frontier of AI protection, we secure the humans and data that power your business.

Book a demo

Book a demo

Explore Platform

Explore Platform

0
0

k

k

organizations protected worldwide

organizations protected worldwide

0
0

T

T

Behavioral signals process annually

Behavioral signals process annually

0
0

+

+

years of threat intelligence

years of threat intelligence

work is changing

The future of work

As work evolves beyond the inbox, your security must move faster than the threats.

As work evolves beyond the inbox, your security must move faster than the threats.

1

We secure humans

For 21 years, we made email safe, reliable, and continuous. 42,000 organizations. Now we’re turning our 27 million users into your strongest line of defense by neutralizing human risk.

email security

2

We secure data

We process 24 trillion data points a year and understand the connections better than anyone. We secure organizations with proactive protection across every communication channel and platform.

human risk

3

We secure AI

AI agents now move through your organization with human-level permissions and inhuman speed. We give you the visibility and control to govern every agent so your AI works for you, not against you.

Work protected

“

Mimecast exists to build a world where no one loses their work. Because work isn’t just data—it’s our legacy, our innovation, and our future. In the era of AI, we ensure that as machines move faster, your protection stays one step ahead.
Mimecast exists to build a world where no one loses their work. Because work isn’t just data—it’s our legacy, our innovation, and our future. In the era of AI, we ensure that as machines move faster, your protection stays one step ahead.

Marc van Zadelhoff | CEO Mimecast

  • Stay protected. Get the State of Human Risk report.

    Human error is no longer a side risk — it's the main event. The Mimecast Human Risk Report reveals why most organizations are dangerously underprepared for insider threats, credential misuse, and AI-powered attacks. Download the report to see where your defenses stand.

    Download the report

  • The Zero Day AI Race Has Begun

    AI just rewrote the rules of cybersecurity. Anthropic's Mythos discovered thousands of zero-day vulnerabilities across every major operating system and browser in a matter of weeks. Through Project Glasswing, those findings went straight to the vendors to patch, not exploit. The zero-day hoarding era is ending. The AI-powered defense race has begun.

    Read more

  • Stay protected. Get the State of Human Risk report.

    Human error is no longer a side risk — it's the main event. The Mimecast Human Risk Report reveals why most organizations are dangerously underprepared for insider threats, credential misuse, and AI-powered attacks. Download the report to see where your defenses stand.

    Download the report

  • The Zero Day AI Race Has Begun

    AI just rewrote the rules of cybersecurity. Anthropic's Mythos discovered thousands of zero-day vulnerabilities across every major operating system and browser in a matter of weeks. Through Project Glasswing, those findings went straight to the vendors to patch, not exploit. The zero-day hoarding era is ending. The AI-powered defense race has begun.

    Read more

  • Stay protected. Get the State of Human Risk report.

    Human error is no longer a side risk — it's the main event. The Mimecast Human Risk Report reveals why most organizations are dangerously underprepared for insider threats, credential misuse, and AI-powered attacks. Download the report to see where your defenses stand.

    Download the report

  • The Zero Day AI Race Has Begun

    AI just rewrote the rules of cybersecurity. Anthropic's Mythos discovered thousands of zero-day vulnerabilities across every major operating system and browser in a matter of weeks. Through Project Glasswing, those findings went straight to the vendors to patch, not exploit. The zero-day hoarding era is ending. The AI-powered defense race has begun.

    Read more

Built for customers of all shapes & sizes

Built for customers of all shapes & sizes

Built for customers of all shapes & sizes

Explore stories

Explore stories

Book a demo

Book a demo

  • “

    We are very impressed with both the technology and how Mimecast implemented the solution in a phased approach.

    Chief Information Officer

    Bidvest Bank

  • “

    We believe Mimecast’s offering is years ahead in terms of threat protection, and we have seen impressive security improvements, including a reduction in cyberthreats.

    Financial Services · Enterprise

    Global Wealth Management Firm

  • “

    It’s really important to have a gold-standard of support from our vendors. I can’t speak highly enough of the Mimecast support team and the quality of documentation.

    Chief Technology Officer

    Prospect Capital Management

  • “

    It’s easy to tell when someone is doing something out of the ordinary, like moving files that contain customer or merchant partner information or IP to a personal drive.

    Sr. Manager of IT Operations

    Snap Finance

  • “

    Staffing health facilities is time-sensitive work, and if email isn’t running smoothly, that could be the difference between securing a placement and not.

    Manager of Network and Security

    Health Carousel

  • “

    Mimecast has changed the way everyone in the organization uses email, and as the CIO, I never have to worry about it anymore.

    Head of Information Security

    GenesisCare

  • “

    Moving to Mimecast has modernized, consolidated and transformed how the State of Oklahoma handles email security.

    State Chief Information Security Officer

    State of Oklahoma

  • “

    The big thing we were trying to solve was that we had no idea where our data was going. We just had no visibility whatsoever. It was honestly just like running around with blinders on.

    Security Analyst

    Lyft

  • “

    We are very impressed with both the technology and how Mimecast implemented the solution in a phased approach.

    Chief Information Officer

    Bidvest Bank

  • “

    We believe Mimecast’s offering is years ahead in terms of threat protection, and we have seen impressive security improvements, including a reduction in cyberthreats.

    Financial Services · Enterprise

    Global Wealth Management Firm

  • “

    It’s really important to have a gold-standard of support from our vendors. I can’t speak highly enough of the Mimecast support team and the quality of documentation.

    Chief Technology Officer

    Prospect Capital Management

  • “

    It’s easy to tell when someone is doing something out of the ordinary, like moving files that contain customer or merchant partner information or IP to a personal drive.

    Sr. Manager of IT Operations

    Snap Finance

  • “

    Staffing health facilities is time-sensitive work, and if email isn’t running smoothly, that could be the difference between securing a placement and not.

    Manager of Network and Security

    Health Carousel

  • “

    Mimecast has changed the way everyone in the organization uses email, and as the CIO, I never have to worry about it anymore.

    Head of Information Security

    GenesisCare

  • “

    Moving to Mimecast has modernized, consolidated and transformed how the State of Oklahoma handles email security.

    State Chief Information Security Officer

    State of Oklahoma

  • “

    The big thing we were trying to solve was that we had no idea where our data was going. We just had no visibility whatsoever. It was honestly just like running around with blinders on.

    Security Analyst

    Lyft

  • “

    We are very impressed with both the technology and how Mimecast implemented the solution in a phased approach.

    Chief Information Officer

    Bidvest Bank

  • “

    We believe Mimecast’s offering is years ahead in terms of threat protection, and we have seen impressive security improvements, including a reduction in cyberthreats.

    Financial Services · Enterprise

    Global Wealth Management Firm

  • “

    It’s really important to have a gold-standard of support from our vendors. I can’t speak highly enough of the Mimecast support team and the quality of documentation.

    Chief Technology Officer

    Prospect Capital Management

  • “

    It’s easy to tell when someone is doing something out of the ordinary, like moving files that contain customer or merchant partner information or IP to a personal drive.

    Sr. Manager of IT Operations

    Snap Finance

  • “

    Staffing health facilities is time-sensitive work, and if email isn’t running smoothly, that could be the difference between securing a placement and not.

    Manager of Network and Security

    Health Carousel

  • “

    Mimecast has changed the way everyone in the organization uses email, and as the CIO, I never have to worry about it anymore.

    Head of Information Security

    GenesisCare

  • “

    Moving to Mimecast has modernized, consolidated and transformed how the State of Oklahoma handles email security.

    State Chief Information Security Officer

    State of Oklahoma

  • “

    The big thing we were trying to solve was that we had no idea where our data was going. We just had no visibility whatsoever. It was honestly just like running around with blinders on.

    Security Analyst

    Lyft

AI In the agent era

The agentic fire

A dangerous asymmetry exists. 85% of enterprises are experimenting with AI agents, but only 5% trust them for production.

A dangerous asymmetry exists. 85% of enterprises are experimenting with AI agents, but only 5% trust them for production.

1

Fuel: Insider access

Fuel: Insider access

Agents act as unvetted digital insiders with deep access to sensitive corporate data and communication.

Agents act as unvetted digital insiders with deep access to sensitive corporate data and communication.

2

Oxygen: Machine speed

Oxygen: Machine speed

Autonomous agents collapse the defensive window to seconds, allowing threats to exploit systems in real time.

Autonomous agents collapse the defensive window to seconds, allowing threats to exploit systems in real time.

3

Heat: Governance control gap

Heat: Governance control gap

Enterprises are deploying agents faster than the "kill switches" needed to monitor or isolate them.

Enterprises are deploying agents faster than the "kill switches" needed to monitor or isolate them.

4

Resolution: Total visibility

Resolution: Total visibility

Mimecast provides the audit logs and controls required to safely govern and scale your autonomous systems.

Mimecast provides the audit logs and controls required to safely govern and scale your autonomous systems.

Explore AI Security

explore AI Security

Explore AI Security

Source: Cisco Newsroom, "Cisco Reimagines Security for the Agentic Workforce," March 2026.

28% of work lives in email. We protect the other 72% too.

28% of work lives in email. We protect the other 72% too.

28% of work lives in email. We protect the other 72% too.

The Mimecast Apex platform covers every actor, every channel, every threat — human or machine.

Our Offering

8% of your workforce is responsible for 80% of security risk.

8% of your workforce is responsible for 80% of security risk.

8% of your workforce is responsible for 80% of security risk.

We don’t just alert you when an attack happens. We move in before the mistake becomes one.

Explore Platform

Explore Platform

Email & Collaboration Threat Protection

Defend against sophisticated email and collaboration attacks

Defend against threats

→

Insider Risk Management & Data Protection

Protect critical data and speed up your response to insider threats

Secure your data

→

Data Governance, Compliance & Insights

Proactively support regulatory and corporate standards

Simplify compliance

→

Security Behavior Management

Identify human risk and get ahead of behaviors

Empower your users

→

We secure humans, data & AI.
To protect your work.

We secure humans, data & AI.
To protect your work.

Trusted by 42,000 companies worldwide.

Questions? We're here to help.

Reach out to us below and our team will get back to you with the answers you need.

Email us

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