LONDON (AP) If you have to log in to computer when you get to work on Monday you may want to be very careful.
James Clapper the former U.S. National Intelligence Director says the global "ransomware" attack could grow much larger when people return to work on Monday.
Europe's police agency says the attack has hit at least 100,000 organizations in 150 countries including Britain's hospital network and Germany's railway system.
It is believed to be the biggest online extortion recorded. Attackers have demanded $300 to $600 to unlock encrypted files.
Clapper calls it a very serious problem and he expects similar attacks to become a growing problem in the future.