“Keep going, bro. You’ve got this!” A data-driven look at how adversaries are weaponizing AI
Talos has collected prompt logs from threat actor endpoints running various applications, such as Claude Code, CodeX, Cursor, or Gemini. This blog is an analysis of the ways we've seen bad actors leveraging cloud-based AI.
Microsoft Patch Tuesday for May 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for May 2026, which includes 137 vulnerabilities affecting a range of products, including 16 that Microsoft marked as “critical”.
Velociraptor leveraged in ransomware attacks
Cisco Talos has confirmed that ransomware operators are leveraging Velociraptor, an open-source digital forensics and incident response (DFIR) tool.
Cybercriminal abuse of large language models
Cybercriminals are increasingly gravitating towards uncensored LLMs, cybercriminal-designed LLMs and jailbreaking legitimate LLMs.
Microsoft Patch Tuesday for May 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for May of 2025 which includes 78 vulnerabilities affecting a range of products, including 11 that Microsoft marked as “critical”. Microsoft noted five vulnerabilities that have been observed to be exploited in the wild. CVE-2
State-of-the-art phishing: MFA bypass
Threat actors are bypassing MFA with adversary-in-the-middle attacks via reverse proxies. Phishing-as-a-Service tools like Evilproxy make these threats harder to detect.
Malicious QR Codes: How big of a problem is it, really?
QR codes are disproportionately effective at bypassing most anti-spam filters. Talos discovered two effective methods for defanging malicious QR codes, a necessary step to make them safe for consumption.
Simple Mail Transfer Pirates: How threat actors are abusing third-party infrastructure to send spam
Many spammers have elected to attack web pages and mail servers of legitimate organizations, so they may use these “pirated” resources to send unsolicited email.
Spammers abuse Google Forms’ quiz to deliver scams
Cisco Talos has recently observed an increase in spam messages abusing a feature of quizzes created within Google Forms.