FRISK Software has released version 3.16 of F-Prot Antivirus for Windows. The release of version 3.16 of F-Prot Antvirus for Windows represents a significant milestone in the continued development of the virus protection and services we provide our Windows customers. In preparation for this release the F-Prot Antivirus scanning engine has undergone a major overhaul and a number of important new features have been added. Among improvements introduced in version 3.16 of F-Prot Antivirus for Windows is a new method of ensuring that F-Prot Antivirus is up-to-date as soon as it has been installed with virus signature file updates now being triggered during the installation procedure of the single-user and trial products. In addition, handling of so called "archive bombs" has been greatly improved. These are archives expand tremendously that cause scanners or other programs to crash or hang because of intensive resource consumption during the scanning of hundreds of levels of archives within archives. The F-Prot Antivirus scanner now flags archive files it finds suspicious and alerts the user that the file "could be an archive bomb". Version 3.16 introduces an F-Prot Antivirus engine with significantly enhanced heuristics. As a result, F-Prot Antivirus is now better equipped to detect and neutralise malware that may attempt to compromise a system in the interrim period after a new threat appears but before virus signature files have been updated. Also, the engine can now better detect and handle executable packers that are often used by malware authors to conceal their malicious code.