Travellers may be unwittingly risking security breaches by using their laptops at WiFi hotspots and other wireless internet access locations, Checks carried out by Orthus, the security company, at railway stations, hotels and bars that offered the technology, showed that networks and computers were often insecure and liable to hacking. Richard Hollis, head of Orthus, warned competitive intelligence was often being gathered. Nonetheless, he said users only had to disable file sharing and install a firewall to make WiFi technology secure.