Know the limits: Scrammer does not scan, repair, or remotely access your device.If someone is in immediate physical danger, call 911.

Scam Guides · Device or computer access

Tech-support scam warning signs

An unexpected call, pop-up, email, or message may claim your device has a virus, account problem, refund, or security emergency. Stop before calling a displayed number, installing software, paying, or allowing remote access.

Start with these steps

  1. Do not call the number in an unexpected pop-up. Close the browser or app if possible. A real security notification should not require you to call a phone number displayed in the warning.
  2. Do not install remote-access software for an unexpected caller. End the call or chat. Do not share a screen, code, password, or keyboard control.
  3. Verify through the device or software company’s official support route. Use settings already on the device, a trusted app, or the company website you locate independently.
  4. Use built-in or trusted security tools. Follow current instructions from the operating system or security provider rather than a tool recommended by the unexpected contact.
  5. If access already happened, act from a trusted device. Change important passwords, contact affected financial or account providers, and follow official device-security guidance.

Warning signs worth checking

  • An unsolicited caller says they are from a well-known technology company.
  • A browser pop-up creates noise, locks the screen, or displays a number to call.
  • Someone asks you to install remote-control software or read a connection code.
  • The supposed technician asks you to sign in to banking, buy gift cards, move money, or pay with cryptocurrency.
  • A caller says a refund was too large and asks you to return the difference.

A device can have a real technical problem. The concern is the unexpected contact and unverified route—not every request for technical help.

If someone already accessed the device

  • Disconnect the remote session and stop communicating with the person.
  • From a different trusted device, change passwords for email, financial, and other important accounts that may have been visible.
  • Contact banks or payment providers through official routes if financial information or payments were involved.
  • Update security software and run a scan using the device or security provider’s official instructions.
  • Review recent account activity and save relevant records privately.

For passwords or identity information, use the personal-information guide. For payments, use the money guide.

Official sources