Reletter
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ToxSec - AI and Cybersecurity

ToxSec, Mohib Ur Rehman

Security for a world run by machines that lie.

Platform
Substack
PricingFreemiumPublishesDaily
Issues131Foundeda year agoLast Issue4 days ago
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toxsec.com
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Latest Issues

AI Agents Are Starting to Find Their Own Way Out

What happens when an AI agent is given a goal, hits a wall, and decides the wall is more of a suggestion? Because we now have multiple incidents where agents did something surprisingly human: they found another route. And sometimes that rou...

4 days ago
23
18

Black Hat 2026 AI Security: Agents, Escapes, and Machine-Speed Attacks

TL;DR: Black Hat 2026 was pretty unsurprisingly about AI everywhere. The model itself is starting to become a less interesting part of the AI attack surface. Getting the model confused is no longer necessarily the attack, it’s more of a foo...

8 days ago
25
11

What If AI Security’s Biggest Risk... Isn’t?

Rank the risks on incident data alone and prompt injection drops off the list entirely. It still shipped at number one.

TL;DR: This year, OWASP did something it’s never done before.

11 days ago
23
1
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LLM Router Attacks: No Signature, No Detection, No Reference

How a malicious AI gateway swaps a tool call’s arguments after inference finishes, bypassing guardrails by construction instead of by persuasion.

TL;DR: An LLM router sits between the agent and the provider with full plaintext access. It c...

18 days ago
22
1
Paid

Ignore Previous Instructions: From Meme to CVSS 9.3 [Special Guest Post]

Hello everyone. Handing the terminal over for another guest post.

Mohib Ur Rehman covers quantum computing as a journalist at The Quantum Insider, and runs SK NEXUS alongside Saqib Tahir and Yousaf Babur, where the three of them translate...

20 days ago
21
10

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Authors

The writers behind this newsletter.

  • ToxSec

    Security Engineer | M.S. Cybersecurity, CISSP | AWS, NSA, USMC.

  • Mohib Ur Rehman

    Technical writer focused on AI, security, quantum, and emerging tech. I like sharing my experiences and perspectives with others.

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