RockYou, which had already been widely criticized for lax privacy practices, has advised its customers to change their passwords, as the hacker gained information about their e-mail accounts as well.

Rock You多次被批评隐私保护松懈，该网站已建议用户更改密码，黑客同时也得到了用户的个人邮箱地址。

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But the move follows a string of incidents where either security in Passport - or the Hotmail free e-mail system to which it is tightly bound - has proved to be lax.

BBC: New flaw puts Passport offline