There's a computer virus from the 1970s that still exists today - Apparently.
The "Creeper" computer virus was first discovered in 1971 on the ARPANET network, a precursor to the modern-day internet. It was a self-replicating program that displayed the message "I'M THE CREAPER" on the screen. Despite being over 50 years old, the "Creeper" virus still exists in a dormant state and can be found in some old computer systems and archives, making it one of the oldest known computer viruses still in existence.