Module 16 · Networks Fail Differently

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
Apr 27, 2026
1 min read
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Last updated: April 29, 2026

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Networks fail in five ways: complete outage, partial outage, latency increase, packet loss, partial reachability. Each masks security signals.

Networks fail in five ways: complete outage, partial outage, latency increase, packet loss, partial reachability. Each masks security signals.

“Latency spike for one user” might be QoS issue or might be MITM. “Partial reachability between subnets” might be misconfig or attacker-installed firewall rule. Defender must rule out malicious cause.

The mindset: every “network issue” should trigger a 5-minute “is this an attack?” check.

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