Facebook and Twitter users of a certain age have got themselves into a dither worrying that Neil Tennant, singer with the Pet Shop Boys, had died in a car crash.
The truth is that Tennant, like other celebrities before him, is the victim of an internet hoax.
Messages have spread across social networks today claiming that film actor Jim Carrey has been killed in a snowboarding accident.
Of course, it's nonsense. But there's an important security lesson for those who believed it.
A hacker has seized control of the rock band Garbage's official Twitter account, posting unauthorised messages to thousands of the group's fans.
Nude photos allegedly of the star began circulating soon after his laptop and camera were stolen. Clicking on such files is always a bad idea, given that malware loves to piggyback on celebrity news. Besides, as any true Belieber knows, Justin has an outie.
Inventive spammers are up to their old tricks again, desperate to do whatever it takes to get you to click on a link to their websites.
Have you received a Twitter message from an online friend, suggesting you have been captured in a Facebook video?
Beware - it could be a malware attack!