From onestopclick.com:

Research carried out by IT analyst Gartner indicates the sector will see a 41 percent increase from 2007 revenue of $119 million.

The group claims wireless local area networks remain a potentially significant vulnerability for organizations, with a number of security incidents reported this year.

John Pescatore, vice president and distinguished analyst at the firm, said: "As the business-crucial use of WLANs and other wireless technologies continues to increase, the need for wireless security monitoring will grow as well."

Read more.

Suppose you're the mayor of a large city. Let's say San Francisco. One morning you get to work and your password (mayor_123) is rejected. Hmmm. You ask if anyone else is having problems logging in and the answer is a resounding "yes!" So, you send an email - err - make a phone call down to your minions at the Department of Telecommunications and Information Services to get some answers. You are The Mayor after all. After a costly investigation, you're shocked - shocked! - to discover that one of your own network engineers has apparently changed everyone's password and installed "traps" which threaten to bring about a "full system failure" - phrases no mayor wants to hear. Especially in an election year.

That's allegedly what happened in the City of San Fran this past July. And as of last week, the alleged hacker - 43 year-old Pittsburgh native Terry Childs - remains imprisoned on $5 million bail.