By the numbers

In an annual survey by the Computer Security Institute and the FBI, 90 percent of the government agencies and large corporations responding detected computer security breaches last year. Only 34 percent of the respondents reported those intrusions to law enforcement, twice as many as reported intrusions to authorities in the 1996 survey.

Based on 503 responses, the San Francisco institute and the FBI found that 78 percent of the organizations detected inappropriate employee use of the Internet, such as downloading pornography or abuse of e-mail. Eighty percent reported financial losses from computer crime or security breaches.

From reports by 223 respondents, the FBI and CSI estimated financial losses at $456 million'a figure that has increased for the last three years. According to the survey, 70 percent of the organizations experienced Web site vandalism, up from 64 percent in 2000. And 55 percent reported denial-of-service attacks in 2001, down from 60 percent in 2000.

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