F-Secure Virus Descriptions : Black Jec

This is a family of at least 11 small, non-interesting viruses, which add their code in front of any files they infect.

VARIANT:

Digital F/X

An extremely badly written variant, which crashes on many machines.

VARIANT:

Sad

This 301 byte variant activates in September and displays the text:

                     Sad virus - 24/8/91