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Attack on Yahoo hit 500 million users

The breach included swathes of personal information including names and emails as well as “unencrypted security questions and answers”.

It did not include any credit card data, the site said, adding it believed the attack was state-sponsored.

In July, Yahoo was sold to US telecoms giant Verizon for $4.8bn (£3.7bn).

The FBI has confirmed it is investigating the attack.

 

Password change urged