Opera forced a password reset for 1.7 million Sync Sync users. The company said it detected and then quickly blocked an attack last week. Some data, including some of the Sync users passwords and account information, may have been compromised. The breach is still being investigated, but the company urged Sync users to change any passwords to third party sites they may have synchronized with the services service Dropbox is zeroing in on users who signed up for the cloud storage service before mid-2012.”]