"Yessir, it will be brief."

"Then, please, enlighten us, what is a virus expert and what do you do?" Rickfield grinned menacingly at Dr. Les Sternman, Pro- fessor of Applied Theoretical Mathematics, Massachusetts Insti- tute of Technology.

"I believe the committee has received an advance copy of some notes I made on the nature of computer viruses and the danger they represent?" Rickfield hadn't read anything, so he looked at Boyers who also shrugged his shoulders.

"Yes, Dr. Sternman," Nancy Deere said, "and we thank you for your consideration." Rickfield glared at her as she politely upstaged him yet again. "May I ask, though, that you provide a brief description of a computer virus for the benefit of those who have not read your presentation?" She stuck it to Rickfield again.

"I'd be happy to, madam Chairwoman," he said nonchalantly. Rick- field's neck turned red at the inadvertent sudden rise in Senator Deere's stature. For the next several minutes Sternman solemnly described what a virus was, how it worked and a history of their attacks. He told the committee about Worms, Trojan Horses, Time Bombs, Logic Bombs, Stealth Viruses, Crystal Viruses and an assorted family of similar surreptitious computer programs. Despite Sternman's sermonly manner, his audience found the sub- ject matter fascinating.

"The reason you are here, Dr. Sternman, is to bring us up to speed on computer viruses, which you have done with alacrity, and we appreciate that." Rickfield held seniority, but Nancy Deere took charge due to her preparation. "Now that we have an under- standing of the virus, can you give us an idea of the type of problems that they cause?"

"Ah, yes, but I need to say something here," Sternman said.

"Please, proceed," Rickfield said politely.

"When I first heard about replicating software, viruses, and this was over 15 years ago, I, as many of my graduate students did, thought of them as a curious anomaly. A benign subset of comput- er software that had no anticipated applications. We spent months working with viruses, self cloning software and built mathematical models of their behavior which fit quite neatly in the domain of conventional set theory. Then an amazing discovery befell us. We proved mathematically that there is absolutely no effective way to protect against computer viruses in software."

Enough of the spectators had heard about viruses over the past few years to comprehend the purport of that one compelling state- ment. Even Senator Rickfield joined Nancy and the others in their awe. No way to combat viruses? Dr. Sternman had dropped a bombshell on them.