500mn Yahoo accounts hit by 'state-sponsored' hack

US technology firm Yahoo has suffered a cyber-attack that led to
the details of at least 500 million user accounts being leaked.
In a statement, Yahoo said the information is believed to have
been stolen in late 2014 by a "state-sponsored"
hacker.
The account information may have included names, email
addresses, telephone numbers, dates of birth, hashed passwords and,
in some cases, encrypted or unencrypted security questions and
answers, the firm said.
The ongoing investigation suggests that st