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🎓️ Vulnerable U | #148

Dec 26, 2025

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15 min read

🎓️ Vulnerable U | #148

Amazon catching thousands of North Korean spies in recruiting pipeline, Microsoft kills RC4 ...finally, CISA leadership is a disaster, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #147

Dec 19, 2025

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20 min read

🎓️ Vulnerable U | #147

Children cancer patients scammed of donations, Mixpanel breach impacting more victims, Browser extensions spying on your AI chats, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #146

Dec 12, 2025

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19 min read

🎓️ Vulnerable U | #146

React and Next.js situation is bad, Malware delivered via ChatGPT and Grok, Fortinet, Ivanti, SAP, and Gogs 0-days, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #145

Dec 5, 2025

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18 min read

🎓️ Vulnerable U | #145

React and Next.js critical RCE zero day, Brickstorm malware found in VMWare, Korea crack down on IP camera spying, and much more!

Matt Johansen
Matt Johansen
🎓️ Vulnerable U | #144

Nov 28, 2025

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17 min read

🎓️ Vulnerable U | #144

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #143

Nov 21, 2025

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19 min read

🎓️ Vulnerable U | #143

FCC rolls back security requirements on telecom industry, Cloudflare postmortem, Salesforce with a new supply chain hack, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #142

Nov 14, 2025

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19 min read

🎓️ Vulnerable U | #142

EU can't stop trying to spy on your chats, Congress hacked, Anthropic releases report about cyber attack that used Claude, and much more!

Matt Johansen
Matt Johansen

sponsored

I tried Vibe Hunting (AI assisted Threat Hunting)

Nov 13, 2025

•

6 min read

I tried Vibe Hunting (AI assisted Threat Hunting)

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #141

Nov 7, 2025

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18 min read

🎓️ Vulnerable U | #141

Ransomvibing in extension marketplace, Google predictions from security in 2026, Russia targets Ukraine grain industry with cyber attack, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #140

Oct 31, 2025

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18 min read

🎓️ Vulnerable U | #140

Hacked critical infrastructure across US and Canada, Russia living off the land against Ukraine, Major telecom backbone provider hacked, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #139

Oct 24, 2025

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17 min read

🎓️ Vulnerable U | #139

Exploit dev boss selling secrets to Russia, YouTube malware network takedown, Dissection of massive sms phishing operation, and much more!

Matt Johansen
Matt Johansen

Newsletter

🎓️ Vulnerable U | #138

Oct 17, 2025

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16 min read

🎓️ Vulnerable U | #138

f5 debacle is absolutely bananas, spying on unencrypted satellite comms, cisco, ivanti, and fortinet also all having a bad week full of 0days, CISA is gutted and facing pressure, 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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