Who's This? A brother/sister hacker team.
How you could have heard of them: Bug and Byte appeared in the Flash TV show as a pair of robbers in the year 2049 ("Godspeed").
Example story: The Fury of Firestorm #24 (June 1984) "Terminal Velocity" by Gerry Conway, Carla Conway, and Rafael Kayanan
Now I'm not exactly sure HOW they do this, but Firehawk's nuclear powers and Firestorm's ability to change his atomic structure, allow them to follow the villains into the Internet, Hackers-style. But they find themselves at the mercy of Bug's electron streams. Together, they bounce Bug off the system.
Who's Next? The man who makes funny animals.