During the past few days some of our users have contacted us raising the concern that the Qihoo 360 Total Security anti-virus software has been labelling the Opera installer executable for Windows as some form of malware (HEUR/QVM11.1.0000.Malware.Gen). The installer setup that we provide at opera.com is digitially signed by us, and we can assure...

Opera recently became aware that source code from our legacy browser engine, Presto, has appeared in some online code and file sharing sites. This code is the property of Opera Software and has been published illegally and without our permission. Opera has taken legal steps to have the source code removed from these sites. The...

Earlier this week, we detected signs of an attack where access was gained to the Opera sync system. This attack was quickly blocked. Our investigations are ongoing, but we believe some data, including some of our sync users’ passwords and account information, such as login names, may have been compromised. Although we only store encrypted...

A number of researchers and website testers have offered their assistance throughout the year to help us tighten the security of our many websites. Thanks to all! Special mention goes to those who discover and report security issues: Dinesh Vicky Aamir Khan Muhammad Abdullah We will update this post with more names throughout 2016, if...

We realize that those of you on old operating systems like Windows XP SP1 and older are left without much choice beyond using our Presto-based browser. With security standards on the web changing so much we didn’t want to leave you completely alone (even though we are not updating this product any longer) – we’ve...