Security Corner:

February, 2008

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February 29, 2008  2:32 AM

The Unsolved D’Agapeyeff Cipher

Ken Harthun Ken Harthun Profile: Ken Harthun

Sometimes, it's a good thing to take a breather from the routine, to venture off into something more fun than the serious day-to-day concerns of network and computer security. One of my interests is cryptography, especially its history, and I love to play around with cryptograms in the daily...

February 28, 2008  1:30 AM

If You’re Not Patched, You’re a Target!

Ken Harthun Ken Harthun Profile: Ken Harthun

OK. So you've installed a NAT router, you've changed the default login and passsword, and you've used an unguessable password. You've done everything right so far. However, you still may be vulnerable; in fact, you probably are, even if you keep your operating system patched. In a


February 24, 2008  1:07 AM

Can a Criminal Hacker Guess Your Password?

Ken Harthun Ken Harthun Profile: Ken Harthun
Networking

In my last post, I stressed the importance of changing the default username and passwords of all configurable network devices. That’s good advice. But a weak password, one that is easily...


February 20, 2008  9:12 PM

Omit This Setup Step and Your Router Can Be Easily Compromised

Ken Harthun Ken Harthun Profile: Ken Harthun
Networking

Last time, I stressed having a NAT router--or router/firewall--between your PC and the Internet as a first line of defense. This is without question the first, most important security step, but it can be useless unless you have it properly configured; in fact, omitting one crucial first step can...


February 16, 2008  8:02 PM

How Not to Invite Attackers into Your PCs or Network – the First Line of Defense

Ken Harthun Ken Harthun Profile: Ken Harthun
Networking

The other day, I gave you what I consider to be the most basic security maxim, one on which I base all of my security practices: The best security measures are completely useless if you invite attackers into


February 13, 2008  7:28 AM

Introduction to Security Corner

Ken Harthun Ken Harthun Profile: Ken Harthun

Hello! The good folks at IT Knowledge Exchange and TechTarget have granted me the privilege of sharing my views on computer and network security with you. I'm proud...


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