MUMBAI, India — You know the messages. They pop up on your computer screen with ominous warnings like, “Your computer has been infected with a virus. Call our toll-free number immediately for help.” ...

Even if you're cautious, there's always a chance that a virus could sneak onto your PC. Sure, Windows does have built-in security to block malware, but all it takes is one wrong click. Maybe it's a ...

If you think your PC is infected with some kind of malware or you just want to do a scan as part of a digital cleanup, Windows has a built-in security tool that can help you on your way — no ...

A computer virus is a type of malware that can replicate itself on your computer and spread to other devices. You might be infected with a virus if your computer suddenly starts running more slowly, ...

A fake warning screen displayed on a computer is seen in this image provided by the Information-technology Promotion Agency. TOKYO -- "Your computer is infected with a Trojan horse." "Contact our ...

New Haven, Conn. — The COVID-19 pandemic yielded important advances in testing for respiratory viruses, but it also exposed important unmet needs in screening to prevent the spread of infections in ...