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Mark Johanson is a Junior Linux Administrator at NHK International Corporation since March 2024, following a substantial tenure as a Systems Engineer at A2 Hosting, where responsibilities included securing server vulnerabilities and managing support teams. With previous experience as a Technical Service Professional at IBM Global Services and a Systems Administrator at ABN AMRO, Mark has demonstrated expertise in system testing, troubleshooting, and IT operations. Continuous professional development in cybersecurity is supported by multiple certifications, including a Google Cybersecurity Professional Certificate and ongoing education in various cybersecurity disciplines.