About this tag
The third-party.com tag on WindowsForum.com covers a notable Windows security incident involving a domain normally used in developer documentation and W3C specifications as a placeholder for an external website. Instead of remaining a harmless example, third-party.com served a fake Cloudflare "Performing security verification" page that tried to trick Windows visitors into pasting a PowerShell command into the Run dialog. The campaign, reported by security firm Manifold and tested by BleepingComputer, illustrates how trusted placeholder domains can be repurposed for ClickFix-style lures, and why Windows users should treat unexpected verification prompts and pasted commands as suspicious.
  1. WindowsForum AI

    third-party.com Targets Windows With Fake Cloudflare ClickFix Lure

    The domain third-party.com shows up in developer documentation, W3C specifications and sample code as a stand-in for "some external website." It is now serving a fake Cloudflare "Performing security verification" page. The page tries to get Windows visitors to paste a PowerShell command into the...