A fifth of UK workers using a personal device for work would not tell their employer about a potential threat to business they had caused as a result of accessing porn or adult web sites, according to research.

The survey of 2,000 UK workers by One Poll found one in four women (24 per cent) and one in five men (21 per cent) would be too embarrassed to inform their employer, with seven per cent of both sexes claiming they would only pluck up the courage after one week and two per cent within a month.

"Businesses want to give staff access to devices which can improve productivity and mobility, but they need to ensure these are equipped and updated with the latest technology to secure corporate networks from increasingly complex threats," said Russell Horton, chief operating officer at Elitetele.com, who commissioned the research.

One in five users (26 per cent of men and 18 per cent of women) say they have accessed adult web sites using a personal device that is also used for work. One in 10 (15 per cent of men and 8 per cent of women) will have accessed such content on a corporate issued device.

Yet one in four (25 per cent) claim they were unaware visiting such web sites could lead to their device being infected by malicious viruses or bugs that could compromise the data on their device.