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What to do about Mimecast’s Cloud Web Security announcement

Mimecast is ending new sales of its Cloud Web Security product. While support continues in the short term, the shift has left many IT teams asking what’s next — and what to do now.

If you’re one of them, here’s how to evaluate your options and why it might be time for something smarter.

Why Mimecast is stepping back — and why that matters

Mimecast Web Security was built to protect users from malicious sites, data leaks and inappropriate content. But in recent years, customers have seen limited roadmap progress, patchy performance and complex maintenance — especially around policy management and reporting. The official announcement only confirmed what many suspected: investment has moved elsewhere, and users are now being encouraged to transition. For those who rely on integrated web and email protection, this introduces both risk and opportunity.

What a smart transition looks like

Replacing a security product like Mimecast Cloud Web Security takes more than swapping tools. It’s a chance to reassess how you protect users, apps and data across the modern web.

The best replacements don’t just match the feature list — they simplify it, connect it, and improve your ability to detect and stop threats before damage is done.

When you evaluate Mimecast Web Security alternatives, look for:

  • Real-time threat protection from malware, ransomware and phishing
  • Inline content control and productivity filtering
  • Cloud app usage visibility and governance
  • Seamless integration with email security and DLP
  • Lightweight deployment with minimal impact on performance
And critically — look for a platform that doesn’t require rebuilding everything from scratch.

TrustLayer Browse: A seamless replacement for Mimecast Cloud Web Security

TrustLayer Browse gives you full control over web traffic, file movement and cloud app access — with smarter detection, real-time enforcement and zero proxy overhead. It protects against malicious websites, stops risky downloads and blocks unwanted content before it ever hits the browser.

Unlike point tools or disconnected proxies, Browse works as part of TrustLayer One, integrating web filtering with your email, identity, and posture security in one place.

You get:

  • Inline traffic inspection and policy enforcement
  • Behavioural detection and AI-powered risk scoring
  • Flexible upload/download controls across sanctioned and unsanctioned apps
  • Productivity and compliance filters
  • Full visibility over cloud app usage
And it’s fast to deploy — without routing traffic through a central proxy or slowing your users down.

Don’t wait for end of support to act

If you’re running Mimecast Cloud Web Security today, it’s time to start planning your next step. Whether you need a full platform transition or just want to replace the web layer, TrustLayer Browse gives you everything you need — with modern controls and less operational friction.

You won’t just keep up with threats. You’ll stay ahead of them.

Mimecast Web Security is out.

Your next move doesn't have to be a compromise

Don’t wait for end of sale to turn into end of protection. TrustLayer Browse gives you inline threat prevention, app control, and real-time enforcement — with none of the old complexity.
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TrustLayer One

One platform. Four layers of control.

Tired of logging into lots of different tools that don’t talk to each other? TrustLayer One gives you mail, web, user and SaaS security that actually works together. No patchwork, no platform fatigue. Just what you need to protect your business and keep your stack under control.

TrustLayer Browse

Control and protect all user, web and cloud activity.
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TrustLayer Posture

Continuously enforce cloud and SaaS security best practises.
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TrustLayer Mail

Stop threats before they hit the inbox.
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Turn your users into the best line of defence.
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