CHAIN-114 — DDoS protection disabled on internet-facing resources

Summary

Severity: Medium · Likelihood: Medium · Logic: ALL

Why this chain matters

VNets hosting internet-facing apps do not have DDoS Protection Standard. A volumetric attack takes the app offline; the business lives with rate-limit downtime plus reputational damage.

Component rules

This chain fires when its trigger conditions are met by the following rules. Click any rule to see its detection logic and compliance mappings.

Rule ID	Role
zt_net_012	Trigger
zt_net_007	Trigger

Attack walkthrough

Step 1 — Launch volumetric UDP flood on public IP.

Actor: Attacker
MITRE ATT&CK: T1498.001
Enabled by: zt_net_012

Attacker gain: Downtime within seconds.

Step 2 — Sustain attack; basic DDoS mitigation (per-IP throttle) cannot absorb.

Actor: Attacker
MITRE ATT&CK: T1498
Enabled by: zt_net_007

Attacker gain: Extended outage.

Blast radius

Initial access	Internet DDoS sources.
Max privilege	Availability denial.
Data at risk	Service availability
Services at risk	Any public-facing Azure resource

How the logic works

The chain fires only when every rule above has at least one finding in the current scan. Missing any one rule breaks the chain — so remediating any single step disrupts the attack path.