Cisco Systems surveyed 100 users of mobile service and 100 IT persons worldwide about security issues. Forty per cent of users do not following company security policies. More than 25 per cent are not concerned about security. Twenty per cent never protect data, mostly because they do not know how. IT persons say that viruses are the biggest threat. One-third of respondents back-up their data. Sixty per cent of companies encrypt transmitted and stored data. Spending on security is expected to grow 20 per cent next year because of lost mobile devices and new hires.