FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Suriv Viruses: Viruses that are earlier, more primitive versions of Jerusalem. The Jerusalem virus is considered to be based on Suriv-3, which is a logic bomb triggered when the date is Friday the 13th, switching off the computer on the 13th.

Detailed explanation-2: -The Jerusalem virus is one of the oldest computer viruses, dating back to 1987. It infected files in the MS-DOS operating systems that were standard at the time. After DOS operating systems were succeeded by newer types of operating systems, the Jerusalem virus became largely obsolete.

Detailed explanation-3: -The Friday the 13th virus is actually called The virus Jerusalem, and was first created in 1987 with one objective in mind. The virus contained one destructive payload that was set to activate on Friday the 13th on all years except 1987.

Detailed explanation-4: -Jerusalem is a logic bomb DOS virus first detected at Hebrew University of Jerusalem, in October 1987. On infection, the Jerusalem virus becomes memory resident (using 2kb of memory), and then infects every executable file run, except for COMMAND.COM.

Detailed explanation-5: -The virus Jerusalem, also known as Friday the 13th, was created in Israel in 1988 to celebrate the 40th anniversary of the creation of the Jewish state. To activate the virus, the calendar only had to hit Friday the 13th and all the programs and files that were being used would be infected and eliminated.