Update: Activision has restored online services for Call of Duty: Black Ops Cold War, Modern Warfare, and Warzone.

Original story follows...

If you're having problems connecting to Call of Duty: Black Ops Cold War, Modern Warfare, or Warzone, you're not the only one. Activision is currently reporting service outages across each game, affecting every platform, including PSN, Xbox Live, Battle.net, Nintendo, Steam, and Epic Games.