Virus Chaser is an anti-virus software that uses Dr. Web, a search engine developed by Doctor Web Ltd. that has also been adopted by the Russian government. It features an amazingly fast search speed, requires only 8MB of disc space, uses light definition files (a few KB to a few dozen KB), and conducts fully-automatic updates. Completely compatible with many types of compressed files, it supports all file formats that have been set for everyday use. The software also comes with the virus insurance of Tokyo Marine & Nichido Fire Insurance Co., Ltd.