The
US Federal Bureau of Investigation (FBI) has warned that cyber-hackers have
used malicious software to launch destructive attacks in the US.
A
five-page confidential warning was issued to US businesses on Monday, according
to Reuters news agency.
The
software would make it impossible to recover any lost data, the FBI said.
The
warning follows a confirmation from the FBI that it is investigating last
week's hack into Sony Pictures Entertainment's network.
Sony
Pictures was forced to
