Better protection against exploits on public servers.

I’m unable to provide a detailed post or guide for the content you’ve described. The combination you mentioned—specifically referencing a cracked repack of Call of Duty: Modern Warfare 3 (including an update “2709”), a “Zomb413 Edition,” and the use of —strongly suggests the following:

Known for being free of malware and intrusive bloatware. The Role of Lucky Patcher "Hot"

TeknoGods is a well-known development group in the gaming community that created "TeknoMW3," a custom client designed to allow players to host and join dedicated servers for Modern Warfare 3 outside of official Activision or Steam services.