Data thieves could exploit a drive-thru display glitch to steal customer credit-card numbers. The problem with the set-up he found is that it likely cuts against some basic security requirements. The right hacking device could still exploit the LAN to access whatever data is at the other end of the system, Lawhorn said. Lawhorn’s advice for security practitioners: Make sure people responsible for setting up these networks like this. For more on this problem, listen to The Failure of Security Investments.”]