The average cost of the worst security breach for small organisations was £35,000 to £65,000 and for large organisations was between £450,000 and £850,000, the 2013 Information Security Breaches Survey reveals.
Large organisations are at high risk with 93 per cent reporting breaches in the past year
The median number of breaches suffered was 113 for a large organisation (up from 71 a year ago) and 17 for a small business (up from 11 a year ago), meaning that affected companies experienced roughly 50 per cent more breaches than on average a year ago
Several individual breaches cost more than £1 million
78 per cent of large organisations were attacked by an unauthorised outsider (up from 73 per cent a year ago) and 63 per cent of small businesses (up from 41 per cent a year ago)
81 per cent of respondents reported that their senior management place a high or very high priority on security, however many businesses leaders have not been able to translate expenditure in to effective security defences
84 per cent of large businesses report staff-related cyber breaches (the highest figure ever recorded) and 57 per cent of small businesses (up from 48 per cent a year ago)
12 per cent of the worst security breaches were partly caused by senior management giving insufficient priority to security.
The 2013 Information Security Breaches Survey (ISBS) was funded by the Department for Business, Innovation and Skills (BIS) and carried out by PwC in conjunction with Infosecurity Europe
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