{"rewrite":{"id":"r_a287b77a830028e4bfaedb98","clusterId":"c_f775a2e45006654311b92cee","slug":"activision-adds-wallhack-blocking-tech-to-call-of-duty-modern-warfare-4","model":"deepseek-v4-1-flash","headline":"Activision Adds Wallhack Blocking Tech to Call of Duty: Modern Warfare 4","summary":"Activision announced on October 2 that Call of Duty: Modern Warfare 4 will use \"Server Culling\" to counter wallhacks. Positional data for opponents the player cannot see is not sent to the client, so a cheat that reads that data finds nothing. Occlusion layers on buildings and objects block both line of sight and information. The game launches October 23.","whyItMatters":"Server Culling attacks wallhacks at the data layer rather than at detection, which removes the client-side information those cheats depend on and, if it holds up in live play, closes an exploit that anti-cheat teams have struggled with for years.","webCardHtml":"\u003cp\u003eThe technology works by withholding information rather than detecting misuse. In a normal client, every player\u0026#39;s position is sent from the server, which is what a wallhack reads. Server Culling stages occlusion layers across buildings and objects in the maps, and any player behind one of those layers is not transmitted to the client at all. Activision says this keeps matches as intended for legitimate players and makes cheat development harder.\u003c/p\u003e\u003cp\u003eIt applies to all multiplayer maps plus DMZ mode and Combat Outpost mode at launch. Activision plans to extend it to maps and modes added from Season 1 onward. VALORANT uses a comparable system called Fog of War, and PUBG: BATTLEGROUNDS has anti-ESP. Riot Games has said performance problems during Fog of War\u0026#39;s development required optimization work, which points to why few shooters have shipped similar systems.\u003c/p\u003e","blueskyPost":"Server Culling means a wallhack has no data to read. That reframes cheating fixes as server architecture, not anti-cheat detection. The cheat never gets caught because there is nothing to catch.","twitterPost":"Server Culling strips the data a wallhack reads. Nothing gets detected because nothing reaches the client at all.","threadsPost":"Activision's fix for wallhacks in Call of Duty: Modern Warfare 4 removes the information, not the cheater. Server Culling never sends opponents' positional data to the client, so a hack that reads positions finds an empty set. Banning is replaced by not having anything to ban.","newsletterBlurb":"Activision detailed Server Culling for Call of Duty: Modern Warfare 4, a system that stops sending positional data for opponents a player cannot see, cutting off the information wallhacks depend on. It applies to all multiplayer maps, DMZ, and Combat Outpost at launch, and to later Season 1 content. The game releases October 23.","attributionJson":"[{\"source\":\"Automaton\",\"url\":\"https://automaton-media.com/articles/newsjp/20261005-471817/\",\"title\":\"Call of Duty: Modern Warfare 4 Introduces New Technology Aimed at \\\"Neutralizing Wallhack Cheats.\\\" Walls That Block \\\"the Data Itself,\\\" So Even Cheats Can't See Through Them\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4634,"outputTokens":668,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1791196166,"createdAt":"2026-10-05T10:24:36.000Z","publishedAt":"2026-10-05T10:28:23.000Z","updatedAt":"2026-10-05T10:28:23.000Z"},"cluster":{"id":"c_f775a2e45006654311b92cee","canonicalTitle":"『Call of Duty: Modern Warfare 4』では「壁透視（ウォールハック）チート無力化」狙う新技術導入。“データごと遮断”する、チートでも透けない壁","representativeArticleId":"a_5ec633918c5288bee5d8d128","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Call of Duty: Modern Warfare 4\"],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-05T04:59:08.000Z","lastSeenAt":"2026-10-05T04:59:08.000Z","updatedAt":"2026-10-05T10:28:23.000Z"},"attribution":[{"source":"Automaton","url":"https://automaton-media.com/articles/newsjp/20261005-471817/","title":"『Call of Duty: Modern Warfare 4』では「壁透視（ウォールハック）チート無力化」狙う新技術導入。“データごと遮断”する、チートでも透けない壁"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Call of Duty: Modern Warfare 4"],"studios":[],"people":[],"type":"news","domain":"games","is_roundup":false},"keyFacts":null}