The best advice is to change your email passwords on a regular basis and to use extreme caution when clicking on a link that appears in an email to link to your email or other accounts.
Mouse over the link and examine the link closely in the url bar.

Phishing scam.
Hotmail
Yahoo
Aol
Gmail

20, 000 names

‘We are aware that some Windows Live Hotmail customers’ credentials were acquired illegally by a phishing scheme and exposed on a website, ‘ a Microsoft spokesman confirmed today.

News of the original scam broke yesterday when technology blog neowin.net reported an anonymous user had published confidential details on Pastebin.

The list detailed more than 10,000 accounts starting with the letters A and B – which suggested that further lists for the other letters may also exist.

Internet users are urged to change their passwords regularly, to be cautious when opening attachments and visiting links from emails, even when the source appears trsutworthy, and to ensure anti-virus software is up to date.