When it comes to PCI compliance, there's no such thing as "too careful." One of the keys to being careful enough? Isolating and protecting servers that handle cardholder data from the rest of your network.

When most people think of computer security, they think of malware, viruses, and malicious outsiders trying to break into networks. Unfortunately, there's just as much danger on the inside of the company firewall as from outside. Unconvinced? We have five examples of damaging and embarrassing insider attacks from the past decade that should change your mind.

Linux deployments still carry high expectations. Before pushing the button on that Linux deployment, make sure you have all the bases covered, and we have a few tips to help save the day.

The so-called Cyber Monday is behind us, but the online sales keep ramping up. The Wall Street Journal shows that online shoppers have spent more $1.1 billion over a two-day period, and traffic to shopping sites has been steadily up. Good for business, but also a very attractive target for attackers from inside and outside companies that deal with credit card data.