pnkbstra.exe是由Even Balance, Inc开发的联网游戏的反作弊程序之一（全称为PunkBuster™ Anti-Cheat）。广泛应用于战地系列、使命召唤、美国陆军、刺客信条、极品飞车、荣誉勋章、孤岛惊魂等。育碧以及EA多数游戏采用 。安装punkbuster service文件的时候会有该文件生成。
安装这个软件生成的列表
Starting PunkBuster Service Tests
Checking OS
Checking PnkBstrA service status RUNNING
Checking PnkBstrA Version OK (1029)
Extracting PnkBstrB.exe to:
C:\Documents and Settings\Administrator\Application Data\PnkBstrB.exe
OK
Checking firewall settings OFF
Is PnkBstrA explicitly allowed?
C:\WINDOWS\system32\PnkBstrA.exe YES
Is PnkBstrB explicitly allowed?
C:\WINDOWS\system32\PnkBstrB.exe YES
Checking if PnkBstrB is running NOT RUNNING
Getting port for PnkBstrA OK (44301)
Opening socket for packet send OK
Sending version packet to PnkBstrA SENT
Receiving version from PnkBstrA OK
Received 6 bytes from 127.0.0.1:44301
Response = 7703 (ms) Version = v1029
Getting PnkBstrB install instance NOT FOUND
Sending start packet to PnkBstrA SENT
Waiting for packet from PnkBstrA TIMEOUT
Watching for PnkBstrB instance change (0) TIMEOUT
Getting port for PnkBstrB FAILED
Sending version packet to PnkBstrB SENT
Receiving version from PnkBstrB TIMEOUT
Checking PnkBstrK driver status NOT FOUND
Extracting new PnkBstrK to:
C:\Documents and Settings\Administrator\Application Data\PnkBstrK.sys
OK
Sending load packet to PnkBstrB SENT
Checking PnkBstrK driver status
