Win32/Cybot.b is a backdoor Trojan used by attackers to open gateways into targeted machines. Once Win32/Cybot.b has secretly infiltrated a system it will open a backdoor giving a remote attacker access and control over the machine. Additional malware can be downloaded onto the compromised machine via the backdoor and an attacker can steal confidential information from the system as well. Win32/Cybot.b will also use the compromised system as a bot in malicious botnet attacks such as distributed denial of service attacks. Have Win32/Cybot.b removed from your system with an effective malware removal tool soon after you encounter it.