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AI

+1

Anthropic Opus 4.6 and the Problem of Adaptive Behavior

Feb 12, 2026

•

3 min read

Anthropic Opus 4.6 and the Problem of Adaptive Behavior

Newsroom
Newsroom

Newsletter

🎓️ Vulnerable U | #154

Feb 6, 2026

•

18 min read

🎓️ Vulnerable U | #154

WhatsApp encryption debate, Notepad++ exposes nation state supply chain hack, AI powered kids toy nightmares, and much more!

Matt Johansen
Matt Johansen

AI

+1

AI-Powered Kids’ Toy Turns a Bedroom Into an Attack Surface

Feb 5, 2026

•

6 min read

AI-Powered Kids’ Toy Turns a Bedroom Into an Attack Surface

Newsroom
Newsroom

Malware

+2

Notepad++ Updates Became a Malware Delivery Pipeline

Feb 5, 2026

•

6 min read

Notepad++ Updates Became a Malware Delivery Pipeline

Newsroom
Newsroom

Newsletter

🎓️ Vulnerable U | #153

Jan 30, 2026

•

17 min read

🎓️ Vulnerable U | #153

Moltbot mania, Sandworm nearly knocks out Polish power grid, MongoDB ransom hacks and much more!

Matt Johansen
Matt Johansen

AI

+1

Moltbot, Prompt Injection, and the New Attack Surface of Always‐On AI Agents

Jan 29, 2026

•

7 min read

Moltbot, Prompt Injection, and the New Attack Surface of Always‐On AI Agents

Newsroom
Newsroom

AI

+2

When the Cyber Chief Becomes the Cautionary Tale: What a Public ChatGPT Upload Teaches Security Teams

Jan 29, 2026

•

3 min read

When the Cyber Chief Becomes the Cautionary Tale: What a Public ChatGPT Upload Teaches Security Teams

Newsroom
Newsroom

AI

+1

Welcome to the Sloppocalypse

Jan 29, 2026

•

3 min read

Welcome to the Sloppocalypse

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #152

Jan 23, 2026

•

16 min read

🎓️ Vulnerable U | #152

curl bug bounty ended over ai slop, LLM generating polymorphic malware client side in real time, Zendesk hijacked for massive spam storm, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #151

Jan 16, 2026

•

15 min read

🎓️ Vulnerable U | #151

Moxie launches private AI chat, Iran Internet still dark amid crisis, US considering tapping private sector hackers for offense, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #150

Jan 9, 2026

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13 min read

🎓️ Vulnerable U | #150

China hacking Congressional staff, ICE tracking everyone's location without warrants via data broker info, ESXi exploits in the wild, Stalkerware producer pleads guilty, and more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #149

Jan 2, 2026

•

13 min read

🎓️ Vulnerable U | #149

MongoBleed Christmas Present, Major crypto heist via malware that resulted from npm worm, React vuln still causing breaches, and much more!

Matt Johansen
Matt Johansen
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Vulnerable U

Vulnerable U

Infosec's favorite weekly newsletter for news, tools, and tips with 38,000+ CISOs, founders, change-makers, and straight up hackers.


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