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Tech Chronicles

Tech Chronicles

Landmark exploits and lessons from decades of cybersecurity history.

The Whistler Who Hacked the World: The Joseph Engressia Story

The Whistler Who Hacked the World: The Joseph Engressia Story

Joseph Engressia could make free phone calls to anywhere on Earth with nothing but his voice. No tools, no equipment—just a whistle at precisely 2600 Hz. This is his story. The Discovery Engressia was born blind. Like many people with congenital blindness, he developed exceptional hearing and musical ability

Sony's 12-Inch Optical Disc: The 1992 Storage Giant That Seemed Impossible

0:00 /0:24 1× Look at this thing. A 12-inch optical disc from Sony, created in 1992. It's massive compared to what we're used to. The disc comes in a protective case for transport - you can see it right at the start. Here'

The Free Software Foundation Turns 40

The Free Software Foundation Turns 40

In 1985, just one year after launching the GNU Project, Richard Stallman founded the Free Software Foundation (FSF) to protect developers and users from companies that exploited or misappropriated open code. At the time, several firms were attempting to commercialize tools created by Stallman and his colleagues—tools originally intended