1.7M of Operas 350M browser users are signed up to the service. The company has reset all of the Opera sync users passwords as a precautionary measure. Passwords for third-party sites saved in the service are encrypted, presumably with a key that is only ever provided by you when needed, and thus that is never stored on disk in any form. In the absence of any details about how the data it stored on your behalf cant rule out the possibility that the intruders were able to sniff out for other networks while they were inside the Opera network.”]