Consumer advocate: Last year’s worldwide alarm about a computer “virus”—a surreptitiously introduced computer program that can destroy other programs and data—was a fraud.
Conclusion (so)
The companies' warning was clearly only an effort to stimulate sales.
Intermediate Conclusion
The warning that there would be a threatening computer virus activated on a certain date was a fraud.
Evidence
Only about a thousand cases of damage were reported around the world. Meanwhile, multitudes of antivirus programs were sold.
Evaluate
Given that ... only about a thousand cases of damage were reported around the world,
How could we argue that ... the companies warning of a destructive virus that would be activated on a certain date were not publicizing a fraudulent fear in order to stimulate sales?
If the companies sincerely believed that the world needed to be concerned about this computer virus, how can we square that with only 1000 cases of damage?
- maybe those 1000 cases of damage happen to be at the most important facilities (nuclear weapons launch computers / hospital computers / computers that control the water or electric supply), so even though they're small in number, they could still pose lots of trouble for the world because of their importance
- maybe the antivirus programs that were sold were just super effective at blocking the virus. If the software worked and if most people bought it, then there wouldn't be that many exposed computers for the virus to infect.
Goal
Look for an answer that resists the overconfident causal story the author is portraying. She's utterly convinced that this whole computer virus hysteria was a fraudulent marketing ploy, since only 1000 cases of damage occurred.
We need to suggest that other possible explanations exist, by arguing that it's possible that there was a legitimate global concern even though only 1000 cases of damage were reported.