FBI probing ‘war chalking’? This is from Dave Farber’s IP mailing list; a reprint of a leaked memo from a Pittsburgh FBI agent suggesting that the FBI is watching ‘war chalking’:

Identifying the presence of a wireless network may not be a criminal

violation, however, there may be criminal violations if the network is

actually accessed including theft of services, interception of

communications, misuse of computing resources, up to and including

violations of the Federal Computer Fraud and Abuse Statute, Theft of

Trade Secrets, and other federal violations. At this point, I am not

aware of any malicious activity that has been reported to the FBI here

in Pittsburgh, however, you are cautioned regarding this activity if you

have implemented a wireless network in your business.

It goes on to point readers to the now-famous .pdf of war chalking symbols, warning that “if you notice these symbols at your place of business”, your network has likely been compromised.