A competitor has distributed malware/a password stealer which, among other things, has stolen all logins stored in the browser.

We have created a portal where you can check whether you have been infected and whether or not your EngineOwning login is among this data.

Clarification: EngineOwning has not been hacked. You downloaded software from another provider. This software from the other provider has stolen your login data FROM THE BROWSER.

We also know that Activision and Battle.net account data was stolen/exfiltrated.

https://www.engineowning.su/userpanel/haveibeenpwned