Newsletter

Matt Johansen's free weekly newsletter for security enthusiasts.

Mental HealthApacheMicrosoftcybercrimeMalwareChinaIranVulnerabilityLinuxAINewsIoTGovernmentHardwareAndroidRansomwareAppleRussiaNewsletterGoogledata breachGuides
NewsletterNewsletter
🎓️ Vulnerable U | #129

🎓️ Vulnerable U | #129

So. Much. Blackhat/DEFCON research. Prompt injections, CyberArk and HashiCorp Vault zero days, DEFCON volunteers helping rural water utilities, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #128

🎓️ Vulnerable U | #128

Tons of blackhat research coming out, Microsoft Exchange major vulnerability, DaVita data breach, Federal court filing system breach, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #127

🎓️ Vulnerable U | #127

Russian ISP hacked, Spilled Tea, New Ransomware data, A ton of scamming gaming sites, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #126

🎓️ Vulnerable U | #126

SharePoint!!!! - oh and other things: Massive npm supply chain attack, Trump's AI Action Plan, A few law enforcement wins, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #125

🎓️ Vulnerable U | #125

Hackers using AI in new ways, Soldier pleads guilty to hacking and extortion, Salt Typhoon undetected in gov network for 9 months, and more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #124

🎓️ Vulnerable U | #124

Scattered Spider arrests, A bunch of sneaky extension malware, LLMs are the new SEO poisoning for phishing links, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #123

🎓️ Vulnerable U | #123

Critical Cisco Backdoor, New macOS malware disguised as Zoom updates, Ransomware negotiator was being paid by ransomware operators, and much much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #122

🎓️ Vulnerable U | #122

Double Cisco CVSS 10 vulns, CitrixBleed2 Electric Bungaloo, North Koreans hiding malware in npm, Detection Engineering Field Manual, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #121

🎓️ Vulnerable U | #121

Data brokers enabling violence, New trick to use discord to spread malware, Widespread Grafana account takeover bug,

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #120

🎓️ Vulnerable U | #120

Grocery supply chain hack leaves shelves empty, 0-click Microsoft 365 Copilot vulnerability, massive internet outage, my Sleuthcon trip report, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #119

🎓️ Vulnerable U | #119

Google Threat Intel Voice Phishing Knowledge Drops, Massive critical Cisco bug, Meta caught tracking data they weren't supposed to, and much more!

Matt Johansen
Matt Johansen
NewsletterNewsletter
🎓️ Vulnerable U | #118

🎓️ Vulnerable U | #118

ASUS botnet, Everything is a C2 (even you're calendar), Bitcoin related kidnappings and violence continue, Fake AI Video Generators are delivering malware, and much more!

Matt Johansen
Matt Johansen