Attackers sign malware using crypto certificate stolen from Opera Software

Hackers penetrated network servers belonging to Opera Software, stole at least one digital certificate, and then used it to distribute malware that incorrectly appeared to be published by the browser maker.

The attack was uncovered, halted, and contained on June 19, according to a short advisory that Opera published Wednesday morning. While administrators have cleaned the system and have yet to find any evidence of any user data being compromised, the breach still had some troubling consequences.