10 breakthroughs in IT security

Big ideas that altered the course of information security

The Firewall: As the Internet grew in the late 80's, it became ever clearer that organisations connecting to it needed a way to close the door to it as well, and only let in the wanted visitors. Thus the notion of the firewall took shape, and several visionaries played a role developing today's varieties, either foundation concepts or products, including William Cheswick, Steve Bellovin, Marcus Ranum, Nir Zuk, David Presotto and Fred Avolio. Ironically, today there is growing sentiment against the firewall, with some labeling it an impediment to e-commerce.

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