Antiviruses
In particular, modern anti-virus software can protect against: malicious browser helper objects (BHOs), hijackers, ransomware, keyloggers, backdoors, rootkits, Trojan horses, worms, malicious LSPs, dialers, scammers, adware and anti-virus software spies.
Some products also include protection from other computer threats, such as infected and malicious URLs, spam, fraud and phishing attacks, online identification (confidentiality), online banking attacks, social engineering methods, constant threat attacks (APT) and DDoS botnets.