Macfinger ClickFix campaign sends DownTheDRAIN infostealer for macOS, (Fri, Nov 13th)

ISC Stormcast For Friday, November 13th, 2026 https://isc.sans.edu/podcastdetail/10178, (Fri, Nov 13th)

AI Didn’t Create a New Kind of Risk. It Removed the Time You Had to Fix the Old One.

Mandiant’s AI Risk and Resilience 2026 report shows attackers putting agentic AI to work across the intrusion. Vulnerability exploitation is still the leading way in, and the window to fix it is closing. Executive Summary Mandiant and Google Threat Intelligence Group (GTIG) published AI Risk and Resilience 2026 in September. Attackers now use agentic AI […]

VU#644655: TightVNC and UltraVNC Viewer contains a heap-based buffer overflow

Overview A heap-based buffer overflow exists in the Tight JPEG decoding component of the TightVNC Windows Viewer version 1.3.10 and affected UltraVNC Windows Viewers. An attacker controlling a malicious VNC server can trigger memory corruption by sending a specially crafted screen update. Successful exploitation can crash the viewer and may allow arbitrary code execution, although only denial of service conditions we…

Fake Zillow pages use ClickFix NetSupport RAT to target apartment hunters

EfficientIP Research Labs traced a ClickFix campaign that used fake Zillow apartment-review pages to install NetSupport RAT on visitors’ Windows computers. Each page showed what looked like a routine verification check. Behind it, the page quietly copied a PowerShell command to the clipboard and walked the visitor through pasting and running it. Doing that installs remote-control software that keeps its window hidden…