Microsoft Skype - Security update to prevent account hijacking
Skype users should promptly apply this key update:
https://isc.sans.edu/diary/Skype+account+hijack+vulnerability+fixed/14512
http://countermeasures.trendmicro.eu/skype-vulnerability/
http://heartbeat.skype.com/2012/11/security_issue.html
QUOTE: The folks over at Microsoft (who now owns Skype) fixed a bug earlier today that potentially would have allowed anyone to hijack a Skype account simply by knowing the e-mail address the account was associated with.