UK businesses have little faith that the government is doing enough to tackle hi-tech crime, says a report.
Of those questioned 57% said any malicious hi-tech crime in the workplace would not be dealt with properly by the police.
Only 4% of respondents said they bothered to report every incident of hi-tech crime, it revealed.
The results come at a time when businesses report that they are almost under siege by cyber criminals.
The survey of the 3,500 members of the Corporate IT Forum, which represents technology managers at the UK's largest firms, found that 69% reported seeing increases in the amount of hi-tech crime committed against them.
Firms were being hit by viruses, denial of service attacks and website defacements, the survey said. The variety and intensity of attacks led many to believe that hi-tech crime has been taken over by professional criminals.
Said the survey: "It has... become too easy and too risk-free for criminals to become involved in cyber crime."
Responding to a question about what would make a difference, 48% of respondents called for "consistent and appropriate penalties for cyber criminals and cross-border e-crime legislation".