NIST has been updating their Information Technology Library (ITL) documents lately. Most of it is repackaged procedures from the mainframe days, but updated. The information is extremely relevant in todays cybercrime environment.

Recommended Reading:
Secure Management Of Keys In Cryptographic Applications: Guidance For Organizations
Cybersecurity Fundamentals For Small Business Owners
Protecting Information Systems With Firewalls: Revised Guidelines On Firewall Technologies And Policies
Risk Management Framework: Helping Organizations Implement Effective Information Security Programs
Security For Enterprise Telework And Remote Access Solutions
Security Of Cell Phones And PDAs

http://csrc.nist.gov/publications/PubsITLSB.html

There is a lot more information, but it is over 2 years old and needs to be reviewed.

Tags: Business Security, PCI Requirements, Security Information,