CallofDuty: Modern Warfare and Warzone servers are All down.
By an in-game alarm, the game has been by a DDoS attack.
Call Of Duty
It seems this may be upsetting everything from link to latency and other problems.
It comes at a time when nothing is surprising anymore.
This story is growing. I will update when more info is available.
Update: Though it seems the difficulties using the DDoS attack might be diminishing, it seems that Battle.net itself was under assault, affecting all Activision-Blizzard’s titles such as Overwatch and Warcraft.
It is uncertain if this was solved entirely at this time, but it appears people have managed to return to games.