About the Site

This site features links and articles intended to introduce, illustrate and explain the knowledge and concepts taught in my classes on computer networking & security. If there’s a link I use in class you should find it here. If I find an article online that builds upon or illustrates something discussed in class, I’ll post it here.

About Me

I’m Jeff Zahorowski, & I’ve been a technical trainer since 2000. I specialize in networking and information security. In my classes I try to blend my years of experience in training, my previous career as a systems administrator, and my background in radio broadcasting into an effective learning experience.

It’s been my pleasure to train clients including Intel (in California, Ireland, Costa Rica & Malaysia), Apple Computer, Oracle, Aerojet, Northrup-Grumman, the U.S. Air Force, and the U.S. Navy Fighter Weapons School (“Top Gun”). In 2014 New Horizons named me one of the top 25 instructors in the world for the third time in seven years. In the 2012 Certiport MOS Master Instructor competition I was the top scorer worldwide. My certifications include (among others):

  • Microsoft Certified Trainer
  • Microsoft Certified Solutions Expert
  • Microsoft Office Specialist Master
  • CompTIA A+, Network+, & Security+ Certified Professional