50.24.45.3
- Constant UAV
- Big UAV
- Wallhack
- Super Speed (Host only)
- Low gravity (Host only)
- Floating dead bodies (Host only)
- Fixed one way of insta-15th

50.25.46.3
- Bringing a GPD will now instantly ban you. (Exceptions)
- Zombie Mods are basically patched due to insta-bans.

52.23.37.5
- Brings back quickscoping (Easier to do)
- Enables you to report a player IN GAME
- Fixes the report button
- Kick button has been temporarily disabled

Issues Addressed:
Resolved several issues with parties getting disbanded unexpectedly.
Updated handling for UPnP-enabled routers to improve matchmaking conditions where users had strict or moderate NAT types. Also added in-game communications so that all players are aware of their NAT type in the Player Match party lobby.
Addressed issue that prevented the Load MP by Default option from saving when other specific option combinations were set.
Prevention of exploit that allowed players to keep custom classes and killstreaks after prestige.
Addressed an issue where Flak Jacket Pro would not always protect against ground fires left by Napalm Strikes.
Prevention of users losing their killstreak reward when switching classes at the start of a new round in round-based game modes.
Addressed an issue where the incorrect perks would appear when spectating another player under certain circumstances.
Added round start explosive delay to China Lake grenade launcher to give it the same round start limitations as other explosives.
Contracts will now reset when the player Prestiges.
Prevention of Valkyrie rocket exploding upon release under rare conditions.
Prevention of Gunship and Chopper Gunner failing to give player full control under rare conditions.
Prevention of an issue where a player will get teleported outside the map boundaries under very specific circumstances.
Additional security measures to enhance detection and banning capabilities.

Gameplay Tuning:
Limit the ability to re-roll supply drops using Hardline Pro to Care Packages only, no other killstreak drops.
Added a negative influencer to all spawn points to decrease the chances of spawning near an enemy. This will further improve spawning protection on top of previous updates.
Additional sound mix tuning for Ninja Pro users increased ranges and volume of enemy footsteps, and removed player footstep sounds on concrete material types.
Increased headshot multipliers for sniper rifles. Sniper rifles with suppressors equipped will now always be ensured one-shot kill headshots.
Subtle increase in sniper rifle accuracy when scoping in.
Added a render delay to the red diamond player indicators that appear when controlling the Gunship, Valkyrie Rocket and Chopper Gunner. When a player first spawns, this will not appear for a period of time.
Additional minor reductions in knife lunge.

- If you can't connect to servers and it doesn't show how long you're ban for this means Treyarch is looking into your account. If you're found guilty of modding they will then put a 48 hour ban on your account, be patient it could take them days to examine your account. (I figured out they are going alphabetical order)

- If you can't connect to the servers first check [ Register or Signin to view external links. ] - If the servers are up and you're still getting an error message you've been ban. If it's your first time being ban, it's likely only 48 hours.

- If you you're ban from the servers, it ALWAYS comes along with a reset, doesn't matter what you did.

- When you get reset, it's only your rank. Your stats, classes and challenges all stay the same. So, it's just your rank that gets reset.

First Strike:
Just announced in an interview with Dan Bunting on Major Nelson's podcast. It's called "First Strike," releases on February 1, 2011 for 1200 pts ($15) on xbox live first.
4 multiplayer maps - Discovery, Stadium, Kowloon, and Berlin Wall. 1 zombie map: ascension.

Discovery- Antarctic German research station.

Stadium- In Northeast US. Hockey rink.

Kowloon- In Kowloon City, China. Rooftop map, based off campaign.

Berlin Wall- In Berlin,Germany. East vs. West Berlin, Checkpoint Charlie.

CALL OF DUTY: BLACK OPS - SECURITY & ENFORCEMENT POLICY

Modders
Users who have modified their hardware and have run hacked script or code. This includes modifying profile data to use illegal characters in a players name.

Instant permaban. You will no longer be allowed to play the game online. Console users who modify their hardware or profile data will also be reported to the console manufacturers.

Boosters
Users who organize to exploit the game for the explicit purpose of ranking up very quickly or to appear in a high position on the leaderboards.

Minor offense: Temp ban, complete stats reset, leaderboard entries removed once
Major offense: Temp ban, complete stats reset, permanent ban from appearing on the leaderboards
Extreme or repeat offenses: Permaban from playing the game online

Glitchers
Users who go out of their way to exploit the game to grief other players. An example would be going outside of the maps clearly defined playable boundary.

Minor offense: Temp ban from playing the game online
Major offense: Extended temp ban from playing the game online
Extreme or repeat offenses: Permaban from playing the game online

Offensive emblem makers
Users who create emblems that are sexually gratuitous or racially offensive.

Minor offense: 2-week ban from using the emblem editor, emblem reset to default, emblem purchases wiped
Major offense: Permanent ban from using the emblem editor