Andy Wright, sales director at IT solutions provider nonstopIT, says that internal threats are on the increase "only from people bringing devices in".
In effect, attaching portable drives from outside of the office to standards-based connectors like universal serial buses exposes the internal network to external threats - and could let viruses or other infections past firewalls unchecked.
Mr Wright adds that a lot of coverage in the media of data security threats focuses on people losing USB pen drives or other removable media loaded with personal or sensitive information.
However, he adds that "you've also got a lot of people bringing their own devices into the office which are putting viruses on to the system, which is a big issue at the moment".
