Twitter has recently been hit by a rash of phishing attacks, where users get email messages with fake Twitter login links, in an attempt to steal Twitter account passwords. If you receive a notification from what looks like the real site, do not login. Instead, type “twitter.com” directly into your browser address bar. As a precaution, now is probably a good time to go directly to twitter.com and change your password. For more about the attack, read CNN.