However, it will not be secure for much longer as the game will shut down shortly, and everything relating to the title will be wiped and no longer accessible. According to Activision, Warzone Caldera will be formally closed down on September 21, 2024; after that, you will not be able to access the game anymore.

Call of Duty Fans Wave Goodbye to the Original Warzone, Which Shuts Down Forever Today - IGN.