# FestIn

FestIn is an External Attack Surface Management product. It runs on-premises. Pricing is free.

FestIn discovers open S3 buckets associated with a domain using crawling and DNS reconnaissance techniques.

Checked October 2026.

## What is FestIn?

FestIn is a domain-based S3 bucket discovery tool that identifies open Amazon S3 buckets through multiple reconnaissance techniques.

The tool performs comprehensive testing and information gathering from various sources including DNS records, web pages through crawling, and S3 bucket configurations such as redirections.

FestIn employs multiple discovery methods including web crawling and DNS crawling to locate potentially exposed S3 buckets associated with a target domain.

The tool systematically examines DNS infrastructure and web content to identify S3 bucket references and configurations that may indicate security misconfigurations or exposed storage resources.

Tags: Reconnaissance, Security Scanning, S3, AWS, Misconfiguration, DNS Security

## Where it fits in your security program (NIST CSF 2.0)

- [Identify](https://cybersectools.com/guides/building-identify-program-small-team): helps you know your assets and your risks.

## Quick facts

- Category: [Exposure & Vulnerability Management](https://cybersectools.com/categories/exposure-vulnerability-management) · [External Attack Surface Management](https://cybersectools.com/categories/external-asm)
- Deployment: On-Premises
- Company size fit: Startup, SMB, Mid-Market, Enterprise
- Pricing model: Free
- GitHub stars: 230
- Website: github.com

## Where it ranks

FestIn is not a pick on the current [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions).

## FestIn FAQ

### What is FestIn?

FestIn is a product in the External Attack Surface Management category. It covers Reconnaissance, Security Scanning and S3.

### What is the pricing for FestIn?

FestIn is free. Download and setup instructions are at https://github.com/cr0hn/festin/.

### What are alternatives to FestIn?

Alternatives to FestIn listed on CybersecTools:

1. [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev) - Fast Certificate Transparency search and JSON API for subdomain reconnaissance. (Commercial)
2. [MGM Security Partners recon me](https://cybersectools.com/tools/mgm-security-partners-recon-me) (Commercial)
3. [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery) - Scans domains to discover attack surface, vulnerabilities, and generate hardening (Commercial)
4. [SurfaceDiff](https://cybersectools.com/tools/surfacediff) - Continuous external attack surface monitoring that shows what changed between scans. (Commercial)
5. [Edgescan Attack Surface Management (ASM)](https://cybersectools.com/tools/edgescan-attack-surface-management-asm) - External attack surface management platform for asset discovery and monitoring (Commercial)

Compare all FestIn alternatives at [https://cybersectools.com/alternatives/festin](https://cybersectools.com/alternatives/festin)

### What deployment and organization size does FestIn fit?

FestIn is available as on-premises software. It is listed for startups, small businesses, mid-market companies and enterprises. It is free.

## Compare FestIn with similar solutions

- [FestIn vs ctlogs.dev](https://cybersectools.com/compare/ctlogsdev-vs-festin)
- [FestIn vs MGM Security Partners recon me](https://cybersectools.com/compare/festin-vs-mgm-security-partners-recon-me)
- [FestIn vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-festin)

All alternatives to FestIn: [/alternatives/festin](https://cybersectools.com/alternatives/festin)

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Source: https://cybersectools.com/tools/festin

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More on FestIn: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=product-md