What is ransomware?
Computer viruses that threaten to delete your files unless you pay a ransom are known as ransomware.
Security experts have warned that ransomware is the fastest growing form of computer virus.
Like other computer viruses, it usually finds its way onto a device by exploiting a security hole in vulnerable software or by tricking somebody into installing it.
BBC Technology reporter Zoe Kleinman explains what ransomware does.
Read the full story:The computer virus that blackmails you
14 Dec 2015
- From the section Technology