Rather than scan every byte of every file, the engine and pattern file work together to identify not only tell-tale characteristics of the virus code, but the precise location within a file where a virus would hide. If Worry-Free Business Security detects a virus, it can remove it and restore the integrity of the file. The scan engine receives incrementally updated pattern files (to reduce bandwidth) from Trend Micro. The scan engine is able to decrypt all major encryption formats (including MIME and BinHex). It recognizes and scans common compression formats, including ZIP, ARJ, and CAB. If Worry-Free Business Security can.