Tech support scams are an industry-wide issue where scammers use scare tactics to trick you into paying for unnecessary technical support services that supposedly fix contrived device, platform, or software problems.
Scammers may call you directly on your phone and pretend to be representatives of a software company. They might even spoof the caller ID so that it displays a legitimate support phone number from a trusted company. They can then ask you to install applications that give them remote access to your device. Using remote access, these experienced scammers can misrepresent normal system output as signs of problems.
Scammers might also initiate contact by displaying fake error messages on websites you visit, displaying support numbers and enticing you to call. They can also put your browser on full screen and display pop-up messages that won’t go away, essentially locking your browser. These fake error messages aim to trick you into calling an indicated technical support hotline. Note that Microsoft error and warning messages never include phone numbers.
When you engage with the scammers, they can offer fake solutions for your “problems” and ask for payment in the form of a one-time fee or subscription to a purported support service.
Continue the article on the Windows Defender Blog.