It's a powerful virus removal tool capable of both detecting and removing deeply embedded persistent threats and other malware that traditional security solutions fail to detect. Sophos Scan & Clean is a free, no-install, second-opinion virus removal scanner designed to rescue computers that have become infected with advanced zero-day malware, spyware, Trojans, rootkits, and other threats capable of evading real-time protection from up-to-date antivirus software. Antivirus programs, blacklists, and other security software that require prior threat knowledge are ineffective against detecting and removing advanced virus attacks.
Modern viruses and malware are designed to bypass standard defenses, as advanced threats effectively hide from both pre-installed security software and computer users.