According to a survey by Infosecurity Europe, 26 percent of companies do not enforce wireless security. So all those Wi-Fi networks out there are wide open?Not quite. The biggest concern for chief security officers (CSOs) is not someone breaking into the corporate WLAN, but rather employees accessing external, unsecured Wi-Fi systems that could expose them and their corporate devices to potential abuse:

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According to Phil Cracknell, president of ISSA UK: "The situation right now is that most businesses do not scan their perimeters regularly. This is essential if you have a policy of 'No Wireless' to ensure it stays that way. It is equally important to scan for new devices, rogue access points and drifting client cards that might choose to connect to networks nearby for a variety of reasons."

Cracknell continues: "One thing is certain: the last six years of wireless development have brought massive change to the way we use computers and the way in which they can be exploited."

What do you think? Is Cracknell right? How do you enforce your wireless security policies?