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threat detection

The instinct is to automate detection. That is usually wrong, because bad detections automated at scale generate noise faster than analysts can absorb it. The higher-return move is to automate the reversible containment actions that follow a high-confidence detection: disabling a session token, isolating a host, forcing reauthentication, revoking an API key. Each is cheap to undo if wrong and expensive to delay if right.

• Identity hygiene: short-lived credentials, phishing-resistant MFA, and elimination of long-lived service account keys. Most automated intrusion depends on credentials that should not have existed.
• Egress visibility: exfiltration is the one step an attacker cannot skip, and it is the least well instrumented in most environments.
• Asset truth: automated attackers enumerate faster than defenders inventory. An accurate, current asset list is a security control.
• Detection as code: version-controlled, tested detections with measured false-positive rates, rather than a growing pile of untested rules.