Just saw this gallery of old MS-DOS viruses on archive.org

And I have to say Casino is pretty funny…

From wikipedia:
The casino computer virus is a malicious virus that upon running the infected file, copies the File Allocation Tables (FATs) to random-access memory (RAM), then deletes the FAT from the hard disk. It challenges the user to a game of Jackpot of which they have 5 credits to play with, hence the name. No matter if they win or lose, the computer shuts down, thereby making them have to reinstall their DOS.

Visit the rest of the malware museum at archvie.org

 

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