Fun Facts About Christopher!
- What course do you teach?Command Line Bascis
- What is an interesting fact about you?I built my first computer when I was 14, and I’ve been chasing technology ever since!
- Your favorite food? I worked at a pizza shop for three years, and I never got tired of eating pizza (there’s just so many combinations!).
- Social Media HandlesEmail: Christopher.firstname.lastname@example.orgLinkedIn: christopher-hallerTwitter: @m4lwhere
The Q & A
Tell us about yourself:
"I am a Cybersecurity professional that has eight years of experience in DoD and Private industry. I’ve led teams of technicians to respond to critical security vulnerabilities around the world, and love the challenge they present. My professional career has involved four years of System Administration
and four years of Computer Incident Response. I love learning about in-depth and difficult technical concepts, as well as developing methods to solve unique challenges. In my spare time, I enjoy competing in Capture-the-Flag (CTF) competitions, as they demand challenging problem-solving skills in deeply technical skillsets. Additionally, I have spent time creating challenges for CTFs. I really enjoy taking the time to create these problems, as it helps reinforce my understanding of the concepts in order to teach it to others. I currently hold my B.S. in Computer Networks and Security from the University of Maryland University College, and I am studying for my M.S. in Cybersecurity Management and Policy. During my career, I’ve earned my CISSP
, GREM, GNFA, GCFA, C|EH, CCNA, MCSA
, MCP, AME, Linux+, Security+
, Network+, A+
, and more."
What brought you to teaching on Cybrary:
"Quickly after beginning to lead teams of cyber-professionals, I learned that I thoroughly enjoyed teaching complex objects to junior analysts. With their increased knowledge, my team and I were able to solve difficult challenges in order to effectively accomplish objectives. Additionally, I consistently pushed my teammates to pursue additional certifications and schooling in order to maintain a competitive edge over our competition.I learned how much I loved teaching others these concepts from my professional career and was immediately drawn to Cybrary’s teaching format. Often-times it can be difficult to get started teaching concepts and may require a significant time commitment. With Cybrary’s format, I am able to help others learn these concepts without sacrificing too much of my busy schedule.Additionally, I wanted to be able to begin branding myself as a strong player in the cyber-world. I knew that creating a course to teach others the basics of computers would set my professional image in a very positive light. After ending my career in the Navy, I still wanted to make sure that I can create an impact to help defend the information and networks across the globe."
Tell us about your course:
"This course is Command Line Basics and is for anyone that is interested in computer fundamentals. This course will create a very strong foundation for any aspiring hacker, system administrator, programmer, network engineer
, help desk technician, and many more! There is always a very significant entry barrier into the command line, as almost every basic user utilizes the Graphical User Interface (GUI). The GUI has useful icons, the mouse pointer, easily readable text, pictures, and much more that allows for easy and intuitive access to almost all users. As these users get more advanced, there will certainly be a point where they need to utilize the command line for a proper configuration setting, disaster recovery, or programming task.This course will introduce the command line and help remove the difficulty to get comfortable with the terminal. It will cover how to open the command line on Windows machines and the terminal on Linux based systems. After opening the command line, it is imperative to learn how to ask for help. This course will cover the most common Windows and Linux commands used to gather information, manipulate data, and configure systems to your needs. Finally, this course will cover how to chain multiple commands together, creating powerful and flexible commands to achieve your goals."
Education/Experience in Cyber Security:
"I have eight years of experience in the industry with the US Navy. Four years were in system administration through Active Directory, Windows Server, Microsoft Exchange, Cisco routers, and more. The most recent four years of my career have focused on computer incident response, where I led teams to respond to computer incidents across the globe. I thoroughly enjoyed the challenges that I was given, and I am very proud of the unique solutions I’ve created to solve them.Additionally, I have earned my B.S. in Computer Networks and Security from the University of Maryland University College, and I am pursuing my M.S. in Cybersecurity Management and Policy. I have earned my CISSP, CASP, GREM, GNFA, GCFA, C|EH, CCNA
, MCSA, MCP, AME, Linux+
, Security+, Network+
, and A+."
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Interests in Cyber Security:
"I enjoy competing in Capture the Flag (CTF) competitions, and I am a member of the University of Maryland Global College (UMGC) Padawans Cybersecurity competition group. We’ve competed in dozens of CTFs, and always learn new techniques to defend networks. I have also created several challenges for CTFs, where I get to teach others about how these challenges can apply to their cybersecurity education.I love analyzing packet captures (PCAP) and completing digital forensics, as it is fascinating that anything conducted on computers can be reconstructed. I am very proud of my skills, and enjoy using them to catch the bad guys."