UNA (The Ukrainian National Antivirus) is a complex solution designed to protect PCs and work stations against viruses and Trojan programs. The Program is optimized for operation with Windows95/98/ME/NT/2000/XP and is a virus-polifag with the built-in functions of a disk reviser, the heuristic analyzer, tools for automatic update via Internet. The entire line of antiviral products of The Ukrainian Antiviral Center (UNA for Win32) is based on antiviral kernel, whose basic advantages are: fast speed; reliability; high sensitivity of the heuristic analyzer. Basic features of UNA for Win32: viral data base 52590 viruses (by 11.08.2003); high scanning rate; archives testing; mail bases testing; disk space required from 5 to 20 Mb; Compatibility with software.