Guest Columnist David Taylor is the Founder of the PCI Knowledge Base, Research Director of the PCI Alliance and a former E-Commerce and Security analyst with Gartner.
In the recent federal probe of retail data breaches, most of the merchants had been unaware of the breaches until informed by government or banking officials. The reason for this is the lack of tools and/or poor procedures for logging network and database access and the general lack of review of this information on a regular basis. In short, there is a good chance that if your company is being breached now, you won’t find out about it until the stolen data is used to commit fraud.
People always blame the lack of up-to-date wireless encryption for the TJX security breach. News stores feature reporters "wardriving" mall parking lots trying to find unencrypted access points, which is very "exciting" but only part of the story. The less exciting part is that even if the merchants in question were using weak wireless encryption, the breaches could have been stopped dead if the retailers had adequate access control logging and alerting capabilities. In addition to stopping external cracks, logging and alerting is even more important to catch "rogue" insiders, particularly those who have privileged access to systems.
Indeed, in this federal probe, the security systems of only one retailer even detected the intrusion. And the feds want that retailer’s identity to be kept secret.
In surveys, retail wireless security is not seen as a big problem. Keeping up with the latest encryption protocols is regarded as not that big a deal. (The TJX breach, when it was first reported, was a huge wake-up call.) Rather, the "big" problem is that most retailers do not have sufficient tools to help them sort through the …