Avast! is an antivirus computer program developed by AVAST Software a.s. (formerly known as ALWIL Software a.s.), a company based in Prague, Czech Republic. It was first released in 1988 although back then it was just a tool to remove the Vienna malware. In 1995 Ondrej Vlček wrote the first anti-virus software for Windows 95 while he was still busy finishing his university studies.Avast! is based on a central scanning engine that is certified by ICSA Labs and West Coast Lab’s Checkmark process and incorporates anti-spyware technology, also certified by West Coast Lab’s Checkmark process, as well as anti-rootkit and self-protection capabilities. It is a multiple recipient of the Virus Bulletin VB100 Award for its detection of 100% of “in-the-wild” viruses, and is a past winner of the Secure Computing Readers’ Trust Award.