If you came to such letters - an excuse to be on the alert!
The only way to protect at the moment is to register a new email address unknown to anyone and change it through Skype site
the main e-mail account for the new account.
To change through the program skype the basic e-mail it is impossible! Only through the site!
Over the last week 10 people only from my contact list were hacked using this vulnerability.
I want to warn everyone as quickly as possible to protect themselves, because so far, Microsoft does not take any action, take care of your own safety.
There was a way (PoC), how to use the vulnerability: http://forum.xeksec.com/f13/t68922/#post98725
Official comment from a Skype representative:
We received reports of vulnerabilities in the Skype security system. For the security of our users, we temporarily disabled the password reset function, and we continue to explore this issue further. We apologize for the inconvenience, the safety of our users is our first priority.
It will not be superfluous for your friends to know this information, share their article with them!