Your uncle’s frozen Mac says it’s infected after viewing a Google ad. Now what?

Ars Technica security RSS feed covering September 2026 reporting on malvertising and scareware, ransomware and data breaches, supply-chain compromises, exploit kits, ClickFix social engineering, AI-agent and LLM security, cryptographic advances, BGP hijacking, surveillance-camera exposure, proxyware devices, and law-enforcement actions against hacking groups. The items describe significant active threats, including compromises affecting thousands of accounts and organizations, but most entries lack sufficient technical detail for specific vulnerability identification.