"Usually the disruption was minor, but roughly a quarter of companies questioned who reported a virus as their worst incident had major disruption, with important services such as email down for more than a day," the authors of the survey said in a statement.
"Of external threats, malicious software was the most significant, while the threat from spyware grew the most. Spyware was the hardest threat to detect, and the one UK businesses were least prepared for," Chris Potter, co-author of the report and partner at PricewaterhouseCoopers, told ZDNet UK.
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