Today's edition pulls together a healthy dose of security content from our Test Center analysts and contributors -- just in time for a Friday systems check before the weekend. Fresh from the Test Center: Defending the network used to be as simple as running a couple of scans and warning users not to open strange attachments. Nowadays, it's the Web traffic that brings in a whole host of threats (although warning Today’s edition pulls together a healthy dose of security content from our Test Center analysts and contributors — just in time for a Friday systems check before the weekend.Fresh from the Test Center: Defending the network used to be as simple as running a couple of scans and warning users not to open strange attachments. Nowadays, it’s the Web traffic that brings in a whole host of threats (although warning those employees about those virus-bearing attachments is still a good idea). CP Secure wants to cut off threats at the pass with its CSG-2500 appliance that blocks dangerous traffic at the network edge. How does it do? Read Keith Schultz’s review and find out.Locking down Linux: Securing your Linux files doesn’t need to require a major full-disk encryption purchase, says Josh Kuo. Over at the Geeks in Paradise blog, he’s got a rundown on how to hide your entire file system or encrypt it the usual way. Encryption on the road: Mario Apicella is often on the road, but he admits his laptop isn’t as well-protected as it could be. Will the forthcoming ASI C8051 notebook and its built-in encryption and fingerprint scanner be the answer to his data encryption prayers?Dumping passwords in the name of security: In this week’s Security Adviser column, Roger Grimes presents the case of a client company who decided to get rid of passwords entirely, replacing them with stronger two-factor authentication. The biggest challenge? Getting back-end RSA and Citrix systems to work together. Would they succeed? Read the column and find out. Technology Industry