Hunt the threat that never alerted.
Pueo engineers detections against ATT&CK, hunts on hypotheses instead of alerts, monitors for the insider, and runs the incident from first indicator through forensic report.
Cyber Hunt, Insider Threat & Incident Response
An alert only finds what somebody already wrote a rule for. Pueo’s hunt practice works from the other direction: a stated hypothesis about how an adversary would operate in this specific environment, tested against the telemetry the floor already collects, with the result written down either way.
Detection engineering closes the loop. Confirmed hunt findings become durable detections mapped to MITRE ATT&CK techniques, tuned against the environment and tracked as content with an owner. Insider-threat work runs alongside it: user activity monitoring and behavioral analysis executed under the customer’s own insider-threat authorities, in coordination with the program, counterintelligence, and legal stakeholders who govern that data.
When something is real, Pueo runs the response to NIST 800-61: detection and analysis, containment, eradication and recovery, and post-incident review, with digital forensics and incident response (DFIR) for host, memory, and network evidence. The output is a defensible record, and coverage gaps handed back to engineering as tracked work. Pueo HONE is the governed loop that pressure-tests the same detections: Pueo GAUGE measures what the SOC can actually see, and Pueo SPAR tests it under authorization.
What’s Inside
ATT&CK detection engineering
Detection content authored, tuned, and version-controlled against MITRE ATT&CK techniques, with each rule owned, tested, and retired deliberately rather than left to accumulate.
Hypothesis-driven threat hunting
Hunts scoped from threat intelligence, environment knowledge, and adversary tradecraft, executed against live telemetry, and documented whether or not they find something.
Insider threat and user activity monitoring
User activity monitoring, behavioral indicators, and case support delivered under the customer’s insider-threat authorities, with handling and access restrictions honored end to end.
Incident response to NIST 800-61
Full-lifecycle response: analysis, containment, eradication, recovery, notification support, and post-incident review, run to a repeatable process rather than improvised per event.
Digital forensics (DFIR)
Host, memory, and network forensics with evidence preserved and packet-level reconstruction where the question demands it, producing findings that survive later review.
Outcomes
- Adversary activity found without waiting for an alert to fire.
- Every confirmed finding converted into a durable, ATT&CK-mapped detection.
- Insider risk monitored under the customer’s own authorities, with the data handled accordingly.
- Incidents worked to a repeatable NIST-aligned process, with forensic evidence preserved.
- Detection blind spots returned to engineering as tracked work with evidence attached.
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