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Cybersecurity Glossary

Access clear, concise definitions of essential cybersecurity terms and concepts. This glossary helps beginners and professionals alike understand the language of information security, from common acronyms to technical terminology used across the industry.

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Cybersecurity Terms Explained

Cybersecurity Terms Explained: A No-Nonsense Guide

During a breach investigation last year, I watched a CFO stare blankly at an incident response report and ask, "What's lateral movement? What does 'exfiltration' mean? Can someone just speak English?" That moment crystallized something I've known for two decades: the cybersecurity

Carl B. Johnson Mar 28, 2026 6 min read
Cybersecurity Glossary

Cybersecurity Glossary for Beginners: 40 Terms to Know

During the 2020 SolarWinds breach investigation, I watched a boardroom full of executives stare blankly when an incident responder mentioned "lateral movement" and "supply chain compromise." They had no idea what was happening to their own network — not because they were negligent, but because nobody had

Carl B. Johnson Sep 16, 2021 8 min read
Cybersecurity Glossary

Cybersecurity Glossary for Beginners: 40+ Terms

When the Colonial Pipeline ransomware attack shut down fuel distribution across the U.S. East Coast in 2021, news anchors stumbled over terms like "ransomware," "threat actor," and "zero trust." Millions of people realized they didn't have the vocabulary to understand the

Carl B. Johnson May 11, 2020 8 min read
Cybersecurity Glossary

Cybersecurity Glossary for Beginners: 40 Terms to Know

When the Colonial Pipeline attack shut down fuel distribution across the U.S. East Coast in 2021, news anchors fumbled through terms like "ransomware," "threat actor," and "zero trust" as if reading a foreign language. Millions of viewers had no idea what any of

Carl B. Johnson Jul 20, 2019 7 min read