🔍 What is a "Sniffer" in Cybersecurity? Before you download or start a course, it’s crucial to understand the topic. A network sniffer (or protocol analyzer) is a tool that captures data packets traveling across a network. In the wrong hands, this is a passive attack (eavesdropping). In the right hands (yours), it is a diagnostic and defensive tool .
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Instructed by Lisa Bock (a renowned security advocate), this intermediate-level course lives on the LinkedIn Learning platform (formerly Lynda.com ). It focuses exclusively on how ethical hackers and network defenders use sniffers to find vulnerabilities before the bad guys do.