Astrid Bergman Senior Incident Response Engineer
New York, NY • irengineer@gmail.com • +1 212-555-0187
Profile Summary
- Senior Incident Response Engineer with 11 years of experience leading DFIR work for a breach-response consultancy across financial services, healthcare, and retail clients, specializing in ransomware and BEC response, cloud identity investigations, and litigation-ready forensics.
- Daily work in EDR (CrowdStrike Falcon, SentinelOne), SIEM (Splunk), forensic collection (Velociraptor, KAPE), memory analysis (Volatility 3), network forensics (Zeek), cloud and identity logs (AWS CloudTrail, Microsoft Entra ID), and reversing (Ghidra), with a solid grounding in chain-of-custody handling, ATT&CK mapping, and timelines that hold up with outside counsel.
- Deep expertise in incident command on live intrusions, host and memory forensics, cloud and identity investigations, and malware triage and YARA hunting, working through the NIST 800-61 incident lifecycle and blameless post-incident reviews to deliver faster containment and findings that executives, insurers, and counsel can act on.
- Trusted partner working closely with client CISOs, outside counsel, breach coaches, and IT teams in high-pressure, multi-client engagements, running the incident bridge, the daily executive update, and the evidence handoff from the first call to the final report.
- Senior practitioner who raises the team’s bar on evidence handling and report quality through peer review of every case file, while running a monthly DFIR lab for new consultants and keeping the collection and reporting templates the practice works from.
Technical Skills
- Frameworks & Certifications:
- NIST 800-61, SANS PICERL, MITRE ATT&CK, Cyber Kill Chain, GCFA, GCIH, GREM
- EDR & SIEM:
- CrowdStrike Falcon, SentinelOne, Microsoft Defender for Endpoint, Splunk, Microsoft Sentinel, KQL, SPL
- Forensic Collection & Timelines:
- Velociraptor, KAPE, FTK Imager, Magnet AXIOM, Eric Zimmerman's Tools, Plaso, Timesketch
- Memory & Malware Analysis:
- Volatility 3, MemProcFS, Ghidra, IDA Pro, x64dbg, ANY.RUN, YARA
- Network & Packet Analysis:
- Zeek, Wireshark, Suricata, Arkime, NetFlow, JA3/JA4
- Cloud & SaaS Logs:
- AWS CloudTrail, Amazon GuardDuty, Microsoft Entra ID, Microsoft 365 Unified Audit Log, Okta System Log
- Scripting, SOAR & Threat Intel:
- Python, PowerShell, Sigma, Tines, MISP, VirusTotal, Jira
Education
Work Experience
- Led 46 ransomware and business email compromise engagements for mid-market and Fortune 1000 clients, running the war room, decision log, and daily executive update with CISOs and outside counsel, and getting 89% of clients to containment within 72 hours.
- Ran containment and eradication with CrowdStrike Falcon live response across a 2,300-host ransomware case, isolating hosts, resetting the KRBTGT account twice, and removing every persistence point, with zero attacker re-entry over a 60-day watch period.
- Collected 190+ triage packages, disk images, and memory captures with Velociraptor, KAPE, and FTK Imager under strict chain of custody, then built Plaso timelines and Volatility 3 analyses that held up in 3 litigated matters with zero evidence challenges.
- Investigated 17 cloud and identity intrusions across AWS CloudTrail, Microsoft Entra ID, and Microsoft 365 audit logs, tracing stolen session tokens and malicious OAuth grants between tenants, which cut the median time to scope a cloud case from 9 days to 3 days.
- Analyzed 14 TB of packet capture and NetFlow in Zeek and Arkime, pivoting on JA3 fingerprints and DNS logs to prove which records actually left each network, cutting the number of people clients had to notify by 58% across 4 breach cases.
- Triaged and reversed 90+ malware samples a year in Ghidra and ANY.RUN, pulling loader configs, C2 addresses, and IOCs into 35 YARA rules that now run across every client fleet the firm monitors.
- Ran 38 hypothesis-driven hunts mapped to MITRE ATT&CK across EDR and Splunk data on retainer clients, finding 5 intrusions no alert had caught and turning each one into a Sigma detection for the client’s SOC.
- Wrote 80+ root-cause reports and executive summaries for boards, insurers, and counsel, and ran 12 tabletop exercises with client leadership teams, which cut repeat incidents among retainer clients by 37%.
- Worked 120+ emergency response cases on the incident response retainer team, from commodity malware to hands-on-keyboard intrusions, running first-48-hour triage and scoping in Carbon Black and Splunk for clients in 9 industries.
- Wrote 22 IR runbooks and a Python collection toolkit for the team’s acquisition and reporting workflow, cutting the average time to deliver a draft report from 11 days to 6 days.
- Partnered with client IT, legal, and threat intel teams on containment windows and evidence requests, and trained 4 new IR consultants on the team’s collection and chain-of-custody process.