Kaspersky Antivirus (Kaspersky Standard) is an antivirus software from Kaspersky for home and small office Windows, macOS, Android and iOS users that delivers real-time protection against viruses, malware, ransomware and phishing. The triple-layer engine blocks common and advanced threats, secures online banking transactions and includes performance optimisation tools to free up space and speed up devices. It is sold as an annual subscription per device with the listed starting price for a one-user, one-year licence and discounts for multi-device packs.