Week in review: Claude Mythos finds 271 Firefox flaws, Vercel breach

Week in review: Claude Mythos finds 271 Firefox flaws, Vercel breach
This weekly roundup covers major developments across malware campaigns, supply-chain and cloud breaches, AI-driven threats and defenses, and significant security patches. Notable items include the NGate NFC campaign in Brazil, new Mirai variants like “tuxnokill”, ProxySmart-powered SIM farm proxy networks, the Vercel breach, and defensive tools such as SmokedMeat and Scenario. #NGate #Mirai

Keypoints

  • SmokedMeat enables teams to simulate attacker behavior inside CI/CD pipelines.
  • NGate NFC malware was distributed via a trojanized HandyPay app targeting Android users in Brazil.
  • ProxySmart was linked to commercial SIM farm proxy networks operating across 17 countries.
  • At-Bay’s InsurSec report shows rising claim frequency and a record average ransomware severity of $508,000.
  • AI is accelerating both offensive tools (ATHR, PentAGI) and defensive capabilities (Scenario, Privacy Filter, Claude Mythos).

Read More: https://www.helpnetsecurity.com/2026/04/26/week-in-review-claude-mythos-finds-271-firefox-flaws-vercel-breach/