Reduced system resource footprint during idle background scans.

Option 1: Technical Summary (For Downloads or Documentation)

Full support for the latest Windows security patches and browser extensions.

Kaspersky Anti-Virus v21.4.12.391 Description: This update provides essential protection against the latest viruses, ransomware, and malware without slowing down your PC. Version 21.4.12.391 includes critical stability fixes, optimized performance for Windows 10 and 11, and updated heuristic analysis engines to catch emerging "zero-day" threats. Option 2: Short Product Description (For Listings)