Incident Response and Digital Forensics (DFIR)
Led by the Team That Helped Define the Field
Built by former senior leaders from Stroz Friedberg, our DFIR team delivers rapid containment, executive guidance, and recovery when incidents put organizations at risk.
Need help now?Not dealing with an active incident? Learn more about our DFIR program below.
Need Help Now?
If you're experiencing an active incident, call (646) 349-4252 or complete the form below for immediate assistance.
24/7 hotline (646) 349-4252. A senior responder engages within one hour.
Report an Incident
Prefer email? info@defensible.tech · (646) 349-4252
What Incident Response Looks Like with Defensible
Defensible's DFIR team follows a proven methodology to contain threats, stabilize operations, and protect your organization's reputation.
Ransomware Investigations
Identify how the ransomware entered, what was encrypted, and guide recovery
Web Application Compromises
Analyze exploits, injection points, and malicious payloads
Malware Analysis
Reverse-engineer malware to understand behavior and remove infection
Cloud Breach Responses
Investigate unauthorized access in Microsoft 365, Google Workspace, AWS, and more
Business Email Compromises (BEC)
Trace unauthorized email access, wire fraud attempts, and credential misuse
Court-Admissible Evidence Collection
Forensically sound data capture to support legal, compliance, or insurance proceedings
What Digital Forensics Looks Like with Defensible
After an incident, Defensible's forensic team gets to the root cause. We uncover how the attack happened, measure its full impact, and guide remediation to ensure it doesn't happen again.
Digital Forensics Investigations
Collect, analyze, and interpret digital evidence across devices and platforms
Memory Forensics
Recover volatile data to reveal in-memory malware or attacker activity
Insider Threat & IP Theft
Identify policy violations, sabotage, or unauthorized data transfers
Expert Witness & Litigation Support
Support legal teams with expert analysis and testimony
Network Forensics
Reconstruct attack paths and exfiltration via packet captures and log analysis
Mobile Forensics
Extract and analyze data from iOS and Android devices
Structured Data Investigations
Review logs, databases, and system records for audit trails or fraud
eDiscovery
Manage electronically stored information (ESI) for legal review, regulatory inquiry, or dispute resolution
Work With Your Cyber Insurer and Breach Counsel
If you carry cyber insurance, call your carrier's claims line early: most policies set rules on who responds and how costs are approved. Defensible frequently works alongside carriers, breach coaches and outside counsel, so the investigation runs under counsel's direction where needed and produces the documentation your claim requires.
Ask your insurer which response firms it approves before an incident happens; it's one of the most useful questions you can settle in advance.
Incident Response Retainer
A retainer puts the agreements, contacts and environment knowledge in place before you need them, so the first hours of an incident go to containment instead of paperwork.
Containing a Server Breach for a vCISO Client
- Customer: Long-term vCISO client in the nonprofit sector
- Challenge: After migrating to Microsoft Azure, the client detected suspicious activity on an internet-facing Confluence server, raising concerns of possible lateral movement and exposure.
- Solution: Defensible immediately launched a targeted forensic investigation—analyzing firewall ACLs, DNS records, and SentinelOne telemetry to verify scope, confirm containment, and eliminate the threat.
- Result: The breach was contained quickly with no persistence or spread. Azure configurations and firewall rules were reinforced, strengthening the client's cloud security posture.
What You Should Know
Incidents Are Inevitable
The strongest security programs are built long before they're tested.
Explore Managed Cybersecurity Services