500,000 Activision accounts have been leaked

Activision has taken a position on the alleged leak. According to the publisher, there has never been a data leak.

Just another Victim from the Data-Breach .. waiting for Justice!! : r/modernwarfare

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Here's How To Change Your Call of Duty Account Password - 500,000 Warzone Accounts Reportedly HACKED

Call of Duty: Modern Warfare news - page 3 - Millenium

Twitter Removes Source Code that Leaked on GitHub and Searching for Downloaders

Over 500k Activision accounts hacked, change the password and add 2FA immediately

Activision Archives - Security Affairs

Activision Denies Reports That 500,000 Call Of Duty Accounts Have Been Hacked

Alleged Activision hack, 500,000 Call Of Duty players impacted

Possible Activision hack puts thousands of COD player accounts at risk - here's all you need to know

Activision bans 500,000 “toxic” players in CoD & Warzone crackdown - Dexerto