AISI DFIR vs libfsntfs: 2026 Comparison
AISI DFIR is a commercial digital forensics and incident response tool by AISI. libfsntfs is a free digital forensics and incident response tool. Compare features, ratings, integrations, and community reviews side by side to find the best digital forensics and incident response fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Mid-market and enterprise security teams that need to move fast on active incidents will find AISI DFIR's managed service model cuts through the hiring shortage for in-house forensics expertise. The Scout and Hunter tools automate evidence collection and persistence removal directly on affected systems, compressing response timelines that would otherwise stretch weeks. The caveat: this is a managed service first, so your team trades hands-on control for speed and specialist depth, making it less suitable for organizations that need full visibility and control over every forensic decision.
Forensic investigators and incident response teams analyzing Windows systems will find libfsntfs essential for NTFS parsing during triage and evidence acquisition. The read-only architecture eliminates accidental data modification during investigation, a critical safeguard when chain of custody matters; 226 GitHub stars reflect active use in the forensics community. Skip this if your team needs write support or a GUI; libfsntfs is a command-line library for practitioners who already know they're working with raw NTFS artifacts.
