What was the first computer virus called?

I went through a phase after seeing Hackers in 1995. It involved some AOL Instant Messages and downloading some mostly-harmless apps (mostly).

The height of my hacking career came when I got kicked off of AOL for using a hacked version of Instant Messenger that gave me access to some kind of chat room that I apparently wasn't supposed to be in (to this day I literally have no idea what the room was).

So suffice it to say, I thought I was pretty much the best hacker ever. Turns out, I just shouldn't be allowed on the internet.

I highly doubt any of the characters in Hackers would even know this one, but what was the first computer virus called?

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