Phreak

Phreaks can max-out 911 systems just by siccing a bunch of computer-modems on them in tandem, dialling them over and over until they clog.

Joybubbles (the legal name of the former Joe Engressia since 1991), a blind genius with perfect pitch who accidentally found he could make free phone calls by whistling tones and went on to play a pivotal role in the 1970s subculture of “phone phreaks,” died on Aug. 8 in Minneapolis.