Assetnote Attack Surface Management Tool vs FestIn: Side-by-Side Comparison (2026)

Assetnote Attack Surface Management Tool

Mid-market and enterprise security teams drowning in undiscovered external assets will find Assetnote Attack Surface Management Tool's hourly scanning and automated enrichment actually catches the forgotten domains and shadow IT that quarterly pen tests miss. The platform covers NIST ID.AM and ID.RA rigorously, with zero-day research and PoC exploits included rather than sold separately. Skip this if your org needs continuous monitoring of internal infrastructure or if you expect one tool to handle both external discovery and remediation workflow; Assetnote excels at finding and classifying what's out there, not orchestrating fixes across teams.

FestIn

AppSec and cloud infrastructure teams hunting for S3 misconfigurations tied to their own domains should start with FestIn; it's free, which means you can run it immediately without budget cycles, and the DNS reconnaissance approach catches buckets that simpler bucket-enumeration tools miss. The 230 GitHub stars suggest active maintenance and community validation of the crawling methods. Skip this if your threat model requires continuous monitoring or remediation workflows; FestIn is a point-in-time discovery tool, not a compliance scanner.