McAfee's Mobile VirusScan is available on a yearly subscription basis. This software detects viruses and kills incoming worms on smartphones, which have such features as Web surfing, e-mail checking, and calendar updating. The phones can gain access to the networks of a company and allow users to edit documents with common desktop office applications. Such features make the mobile devices an attractive target for cyber-crooks and pranksters, but, until the present, the threats have been mostly supposition. The debate continues in the telecommunication and computer security industries as to the extent of the threat from mobile viruses and hacking. However, experts say that Web-connected mobile devices will be more widely used, and risk will increase. Companies are being advised to prepare for what some regard as an inevitable avalanche of destructive mobile attacks. Paul Stamp, mobile-security analyst with Forrester Research, notes that proof of concept viruses have been designed to show that extensive damage could be done on networks. Companies are urged to know and monitor those who have mobile devices with corporate access and to raise awareness among the users that loss or theft of a device is a breach of security. Real protect ions should be installed before a major outbreak because preventive action is cheaper than reactivity. Among protective products highlighted for mobile device security are those from McAfee, Trend Micro, Symantec, Point Sec, Protect Data, Credant, and F-Secure. The vulnerable wireless network carriers are either working with software vendors to bundle antivirus applications and other programs into phones before sale or are waiting for better security products.