ESET NOD32 is an antivirus software developed by ESET, designed to protect computers from malware, viruses, worms, spyware, and other malicious threats. It offers features such as real-time protection, threat detection and removal, anti-phishing capabilities, and a lightweight footprint that minimizes its impact on system performance. Subscriptions typically include regular updates to the virus signature database, ensuring ongoing protection against the latest threats.