"Frederick B. Cohen" (born 1956) is an American computer scientist and best known as the inventor of computer virus defense techniques. He gave the definition of "computer virus". Dr. Cohen is best known for his pioneering work on computer viruses, the invention of high integrity operating system mechanisms now in widespread use, and automation of protection management functions.

In 1983, while a student at the University of Southern California's School of Engineering (currently the Viterbi School of Engineering), he wrote a program for a parasitic application that seized control of computer operations, one of the first computer viruses, in Leonard Adleman’s class. He wrote a short program, as an experiment, that could "infect" computers, make copies of itself, and spread from one machine to another. It was hidden inside a larger, legitimate program, which was loaded into a computer on a floppy disk.

One of the few solid theoretical results in the study of computer viruses is Cohen's 1987 demonstration that there is no algorithm that can perfectly detect all possible viruses.

Cohen also believed there are positive viruses and he had created one called the compression virus which spreading would infect all executable files on a computer, not to destroy, but to make them smaller.

More Fred Cohen on Wikipedia.

Dennis is very affable. He likes to joke all the time. He has a very open personality. I thought I would like to write a piece for him.

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[The new test is still too slow to allow testing of individual cuts of beef, however.] I'm very fond of aged beef, ... but this would take 100 days or so, and we don't like our beef that old.

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You need 100 million trusted computers.

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It makes sense because there's a big demand to increase participation of minority patients. You want your patient population to mirror the population at large.

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The position of a chief information security officer (CISO) exists at many large firms, but it has not been a 'C-level' position. The CISO will have to be a position right up there with the CEO, CFO and CIO.

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Then you can make reasoned public decisions.

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In this work, I wanted him (the bass clarinet soloist) to sort of cajole the strings into going along with him. He would sort of kindly and smilingly get them to see his way.

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This year we are bearing the fruits of our investments.

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