The antivirus kernel of avast! for Linux is identical to the kernel for Windows systems.
The latest version of the avast! antivirus kernel features outstanding detection abilities, together with high performance. You can expect 100% detection of In-the-Wild viruses (viruses already spreading between users) and excellent detection of Trojan horses with minimum false positives.
The kernel is certified by ICSA Labs; it frequently takes part in the tests of Virus Bulletin magazine, often yielding the VB100 award.
Like avast! for Windows, the avast! engine for Linux also features outstanding unpacking support. It can scan inside almost the same number of archives as under Windows, with the exception of MAPI, CAB, ACE, CHM, 7ZIP and NTFS streams. The following archives can be scanned: ARJ, ZIP, MIME (+ all associated formats), DBX (Outlook Express archives), RAR, TAR, GZIP, BZIP2, ZOO, ARC, LHA/LHX, TNEF (winmail.dat), CPIO, RPM, ISO, and SIS. It also supports a number of executable packers (such as PKLite, Diet, UPX, ASPack, FSG, MEW, etc.).