[2J[1m[37;41mĿ[40m
[1m[37;41m[1m[37;41mUndetectable Viruses                                                         [1m[37;41m[40m
[1m[37;41m[1m[37;41mBy SIA [03-10-96]                                                            [1m[37;41m[40m
[1m[37;41m[1m[37;41mS#4-19a                                                                      [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41mIt's very clear that the virus scanners cannot keep up with the              [1m[37;41m[40m
[1m[37;41m[1m[37;41mnew encryption programs which viruses are hidden.  For example,              [1m[37;41m[40m
[1m[37;41m[1m[37;41mnovice users often just simply scan, and if the scanner says                 [1m[37;41m[40m
[1m[37;41m[1m[37;41mthat there is nothing wrong with your file, he/she usually runs              [1m[37;41m[40m
[1m[37;41m[1m[37;41mthe file, and without warning, a virus takes over a victim's                 [1m[37;41m[40m
[1m[37;41m[1m[37;41mhard drive.  What was wrong with that user's precaution techn-               [1m[37;41m[40m
[1m[37;41m[1m[37;41miques?  Picture this, a state trooper tries to use his radar                 [1m[37;41m[40m
[1m[37;41m[1m[37;41mon high-speed sports cars, but his radar states that the car                 [1m[37;41m[40m
[1m[37;41m[1m[37;41mis not speeding, even though it is speeding.  Its the same way               [1m[37;41m[40m
[1m[37;41m[1m[37;41mwith viruses, most viruses these days cannot be detected by                  [1m[37;41m[40m
[1m[37;41m[1m[37;41meven the most sophisticated virus scanners, here are the reasons             [1m[37;41m[40m
[1m[37;41m[1m[37;41mwhy:                                                                         [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41ma. Batch file virus                                                          [1m[37;41m[40m
[1m[37;41m[1m[37;41mb. Compressed by LZEXE, PKLite, or other .EXE compressors.                   [1m[37;41m[40m
[1m[37;41m[1m[37;41mc. Encrypted by PROTECT or other .EXE encrypters.                            [1m[37;41m[40m
[1m[37;41m[1m[37;41md. New signatures                                                            [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41mBatch file viruses are rarely seen these days, but they do exist,            [1m[37;41m[40m
[1m[37;41m[1m[37;41msome batch viruses have been converted into .EXE and .COM files,             [1m[37;41m[40m
[1m[37;41m[1m[37;41mthe safest way to detect these kinds of viruses is by using a                [1m[37;41m[40m
[1m[37;41m[1m[37;41mhex editor or even a plain text editor for .BAT files.                       [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41mCompressed executable files which contains virus signatures can              [1m[37;41m[40m
[1m[37;41m[1m[37;41mhardly be detected, since the whole .EXE file is compressed and              [1m[37;41m[40m
[1m[37;41m[1m[37;41msome of the coding becomes "static" to your virus scanner, one               [1m[37;41m[40m
[1m[37;41m[1m[37;41msafe way of detecting viruses off compressed executables is by               [1m[37;41m[40m
[1m[37;41m[1m[37;41musing an decompressor, such as UNP.                                          [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41mEncrypted virus executable files has also the same effect as                 [1m[37;41m[40m
[1m[37;41m[1m[37;41mcompressed virus executables, SIA suggests UNP's sophisticated               [1m[37;41m[40m
[1m[37;41m[1m[37;41mtechniques of decrypting and decompressing these files, and then             [1m[37;41m[40m
[1m[37;41m[1m[37;41mrun your favorite virus scanner.                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41mMost of the new virus scanner products can detect new virus                  [1m[37;41m[40m
[1m[37;41m[1m[37;41msignatures, though be warned, not all virus scanners are perfect.            [1m[37;41m[40m
[1m[37;41m[1m[37;41mAlways look for the most up-to-date virus scanner data(s) for                [1m[37;41m[40m
[1m[37;41m[1m[37;41myour virus scanner.  Sometimes, upgrades cost from nothing to                [1m[37;41m[40m
[1m[37;41m[1m[37;41m$30.  It's better to be safe, than demolished.                               [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41m***                                                                          [1m[37;41m[40m
[1m[37;41m[1m[37;41m                                                                             [1m[37;41m[40m
[1m[37;41m[1m[37;41mSIA is a non-profit organization outlined to provide the normal              [1m[37;41m[40m
[1m[37;41m[1m[37;41mcomputer users with information concerning illegal activities                [1m[37;41m[40m
[1m[37;41m[1m[37;41mand the dangers of cyberspace.                                               [1m[37;41m[40m
[1m[37;41m[1m[37;40m
