A survey by DeviceLock found that 65 per cent of IT decision-makers recognised that unauthorised users could access valuable company data through the iPhone.
Of the respondents, that included senior IT decision-makers in medium-to-large firms, 64 per cent said they had not taken any steps to secure company data against this threat.
The survey also revealed that 40 per cent of businesses knowingly allow staff to download company data onto removable devices without any security provision.
Sacha Chahrvin, managing director at DeviceLock UK, said: “We know that the consumerisation of corporate IT is an increasing problem for IT departments. The amount of removable and mobile memory-enabled devices that employees have on their person at any one time is now quite considerable - be it a USB stick or an iPhone.
“Therefore, we were very surprised to see that most companies were not prepared for this threat. DeviceLock 6.4.1, which is now in beta, will provide a secure way for companies to have more control over how employees use their iPhones as a business tool.”