Many cellular data networks use little to no security when sending and receiving information, according to a report from Storefront Backtalk.

The publication said that mobile technology expert Karsten Nohl told the Chaos Computer Camp hacking convention that GSM-based cellular netwoks - including AT&T and T-Mobile - are relatively easy to monitor. All that's needed to listen in on transmissions is an older GSM phone that has been partially reprogrammed.

However, Storefront Backtalk asserted that these and other service providers are unlikely to implement tough new network security technology in the near future, despite the fact that the infrastructure is designed to handle it. Government eavesdropping considerations and the need to block VoIP applications both argue against such a move.

This means that any significant network security improvement for businesses with smartphone users is going to have to originate on their end. Despite the hassle, it may be a good idea to implement a virtual private network for mobile device use, the tech publication said.

Another threat to watch out for on the smartphone front is the presence of insecure apps on employee devices, which can compromise important information.