The Security Platform for Enterprise Agents.
Joined January 2026
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14 Photos and videos
Jun 10
The Mythos train has arrived. And we have your back.
Claude Mythos is officially public- and it's already changing the security landscape.
The good news? We're not worried.
Here's why: reinsec.io/Mythos.html
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The White House has launched one of the most significant initiatives yet for AI security and governance
Rein CEO Matan was asked to share his perspective in a recent article by TheStreet.
Read the full article: thestreet.com/technology/whi…
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Understanding what agents actually do vs. what they say they'll do is one of the hardest problems in AI.
@matanbarefrat joined Phillip Miller, CISO at H&R Block to discuss exactly that.
Watch on demand: event.on24.com/wcc/r/5324905…
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Rein is officially on the @Google Marketplace.
Which means:
1. Virtual tea party.
2. You can now deploy Rein even easier to secure your most business-critical agents.
You probably care more about #2.
eu1.hubs.ly/H0vK7F-0
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May 26
MCP = Model Compromise Pipeline?
MCP tool poisoning is a new class of attack that lets adversaries manipulate the tools behind enterprise AI agents - quietly influencing outputs, decisions, and behavior from the inside out.
Read about it here: eu1.hubs.ly/H0vB4xw0
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May 21
Join us for a webinar hosted by Cybersecurity Dive where our CEO Matan Bar-Efrat will be joined by Phillip Miller, MA, CISSP, Vice President & Global Chief Information Security Officer at H&R Block
📅 Thursday, May 28, 2026
🕑 2:00 PM EDT
Register: eu1.hubs.ly/H0vvNCh0
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Feb 10
Your AI agents aren’t doing what you think they’re doing.
Netanel Rubin, our Co-founder and CTO, breaks down how to uncover what your MCPs and agents actually do behind closed doors, AFTER a prompt is sent.
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Unlike most AppSec tools, we value silence.
If there’s nothing to stress about, you’ll hear nothing from Rein.
Real value is staying quiet — and only alerting you when something is actually important.
Have a quiet, alertless weekend.
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Philip Miller - CISO at H&R Block - has a lot to say about Rein and the future of AppSec.
Read here: eu1.hubs.ly/H0rv0Z60
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Jan 29
Thank you @kevtownsend for this feature about us on SecurityWeek.
Our favorite part has to be this - "Securing production applications from the inside – Rein Security offers a new approach to application security."
We're humbled.
Read it here: lnkd.in/e2qx5vK4
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Jan 28
Today, Rein launches to bring reality to AppSec.
AppSec didn’t need another tool.
It needed context.
No more guessing how apps behave.
No more proxies.
No more assumptions.
Reality, finally.
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