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What Happens when Cybersecurity Knowledge Walks Out the Door

Andrew Northern, Principal Security Researcher at Censys, argues that mentorship is vital for preserving institutional memory and judgment under pressure in cybersecurity teams. He warns that when senior defenders disengage, the tacit knowledge needed to protect legacy‑heavy environments evaporates quickly. Mentorship, he says, not only strengthens the mentor but also shortens mean‑time‑to‑response, tying directly to measurable security outcomes. Northern also critiques tool‑first training and over‑reliance on automation, insisting that core operating‑system, networking, and development skills remain non‑negotiable.