Netskope reported that a tech-support scam used Google Ads to place fake security alerts on legitimate websites. The scareware—a warning designed to frighten people into seeking bogus help—made browsers on Windows and Mac devices appear seized and urged users to call a number on screen.
Fake support alerts appeared on ordinary websites
The ads appeared on legitimate publisher sites covering maps, weather, real estate, document hosting and sports. That familiar setting helped the warning feel plausible, even though its purpose was to steer people to a bogus support center.
The scam was designed to make the browser look broken, not to lock the computer itself. People who called the displayed number were pressured to pay fees, allow remote access or disclose personal information.
The browser looked trapped; the computer was not
The fake locker was designed to fill the screen, hide the cursor, swallow the usual exit keys and make the browser lag. Those effects could make a webpage feel like a system-wide emergency, but the reported lock was confined to the browser’s appearance; the computer itself was not locked.
What Netskope tracked
Netskope reported that users at 619 customer organizations clicked the malicious ads. That figure counts organizations where clicks were observed, not individual people.
The company tracked more than 250 Google Ads campaign IDs across at least 284 legitimate publisher sites. In its observed sample, roughly 62% of the organizations were based in the United States; Japan ranked second and Australia third.
Netskope’s reported protection outcome
Netskope said its protections blocked the scam content for users in its monitored customer group and that no users in that group were scammed.
