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srkyn/README.md

David Sarkisyan cybersecurity profile banner

David Sarkisyan

New York City cybersecurity analyst building security tools, detections, identity hygiene, and network defense. I came through healthcare IT, systems administration, and embryology. Environments where small mistakes matter, documentation has to be clean, and calm handoff under pressure is part of the job. That background shapes how I approach security work.

STIGPilot tests lapse CI IdentityRiskGraph tests splunk-detection-content validation relic CI browser-bailiff CI undertaker CI

About

I focus on the operational security work that is easy to overlook: STIG changes that need triage, stale Entra ID devices, leftover Active Directory objects, scheduled jobs nobody reviews, browser extensions with broad access, detections that need tuning context, and network controls that need monitoring and documentation.

My tools are built from a practical question; what would make this work less painful for the person doing it? The answer is usually not another viewer or scanner. It is a fast local helper that turns a dense input into a short brief, a backlog, and something people can actually act on.

Current focus: detection engineering, SOC operations, IAM hygiene, and security automation.

Featured Work

Project Focus Artifact
STIGPilot DISA STIG change triage, remediation backlog generation, evidence checklist planning, and ticket-ready exports Chrome demo
IdentityRiskGraph Identity-first detection engineering for CloudTrail IAM events, nested access paths, MITRE-mapped findings, and reviewable risk context CloudTrail detector
Splunk Detection Content SPL detections mapped to MITRE ATT&CK with analyst pivots, tuning notes, and triage playbooks Playbooks
lapse Entra ID stale-device review using device timestamps and interactive sign-in evidence — cloud half of a hybrid identity hygiene pair Demo / Release
relic Active Directory hygiene for stale users, computers, disabled accounts with live memberships, and Kerberoasting-exposed service accounts — on-prem half of a hybrid identity hygiene pair Demo / Release
Undertaker Read-only scheduled task auditor for cron, systemd timers, and Windows Scheduled Tasks Demo
Browser Bailiff Browser extension permission, host access, age, and review-reason auditor Demo
Authorized LMS Security Assessment Sanitized case study from an authorized assessment, focused on access boundaries, control review, and redaction discipline Control matrix
OPNsense + Proxmox Security Control Plane Firewall intent, DNSSEC, Quad9 DNS-over-TLS, CrowdSec, Proxmox LXCs, VictoriaLogs, NetAlertX, OpenCanary, live threat telemetry Architecture

Lab Practice

TryHackMe: top 1% public profile — 120+ completed rooms across SOC alert triage, SIEM, Splunk, EDR, phishing analysis, Wireshark, Linux, web security, and defensive security fundamentals.

Contact

Website: srkyn.com · Email: contact [at] srkyn.com · LinkedIn: linkedin.com/in/srkyn

David Sarkisyan · Cybersecurity Analyst · New York City

Pinned Loading

  1. stigpilot stigpilot Public

    Local Python CLI that compares DISA STIG XCCDF releases and generates impact summaries, remediation backlogs, evidence checklists, and ticket-ready exports.

    Python 1

  2. lapse lapse Public

    Entra ID device hygiene tool using Graph sign-in evidence to reduce stale-device false positives.

    Python

  3. IdentityRiskGraph IdentityRiskGraph Public

    Identity-first detection engineering app for CloudTrail IAM events, nested access paths, and explainable SOC risk investigation.

    Python

  4. splunk-detection-content splunk-detection-content Public

    Splunk detection and triage notebook with lab-based SPL, MITRE ATT&CK mapping, tuning notes, and analyst playbooks.

    Python

  5. relic relic Public

    Active Directory hygiene auditor for stale objects, risky group remnants, non-expiring passwords, and aging service accounts.

    Python

  6. ai-lms-security-case-study ai-lms-security-case-study Public

    Authorized AI/LMS security assessment case study with private reporting, OWASP LLM-aligned controls, remediation guidance, and public-safe redaction boundaries.