# MITMEngine

MITMEngine is a Network Detection and Response product. It runs on-premises. Pricing is free.

Accurate detection of HTTPS interception and robust TLS fingerprinting tool.

Checked October 2026.

## What is MITMEngine?

DEPRECATION NOTICE: This software is no longer maintained. The goal of this project is to allow for accurate detection of HTTPS interception and robust TLS fingerprinting. This project is based off of The Security Impact of HTTPS Interception, and started as a port to Go of their processing scripts and fingerprints.

More context about MITMEngine is available in this Cloudflare blog post.

Quick Links:
- Signatures and Fingerprints: Core Definitions
- MITM Detection Methodology
- API Example Usage
- Building and Testing
- How to Contribute
- mergeDB utility Requirements
- Go
- Wireshark 3.0.0 (wireshark -v to check)

Documentation:
Detailed documentation lives with the code (copy package to $(GOPATH)/src/github.com/cloudflare/mitmengine first).

Command to access documentation: godoc -http=:6060 http://localhost:6060/pkg/github.com/cloudflare/mitmengine

Signature and Fingerprints:
In this project, fingerprints map to concrete instantiations of an object, while signatures can represent multiple objects. We use this convention because a fingerprint is usually an inherent property of an object, while a signature can be chosen. In the same way, an actual client request seen by a server would have a fingerprint, while the software

Tags: TLS, MITM

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

- [Detect](https://cybersectools.com/guides/building-detect-program-small-team): helps you spot attacks and unusual activity.

## Quick facts

- Category: [Network Security](https://cybersectools.com/categories/network-security) · [Network Detection and Response](https://cybersectools.com/categories/ndr)
- Deployment: On-Premises
- Company size fit: Enterprise, Mid-Market
- Pricing model: Free
- GitHub stars: 814
- Website: github.com

## Where it ranks

No shortlist covers this product's category yet. The closest is [Best SASE Solutions for Business](https://cybersectools.com/shortlists/best-sase-solutions).

## MITMEngine FAQ

### What is MITMEngine?

MITMEngine is a product in the Network Detection and Response category. It covers TLS and MITM.

### What is the pricing for MITMEngine?

MITMEngine is free. Download and setup instructions are at https://github.com/cloudflare/mitmengine/.

### What are alternatives to MITMEngine?

Alternatives to MITMEngine listed on CybersecTools:

1. [Solana Networks TrafficWiz](https://cybersectools.com/tools/solana-networks-trafficwiz) - Deep learning-based encrypted traffic classification up to 25 Gbps w/o decryption. (Commercial)
2. [Fox IO JA4+](https://cybersectools.com/tools/fox-io-ja4) - Protocol-layer network fingerprinting suite for bot, proxy & malware detection. (Commercial)
3. [Gigamon TLS/SSL Decryption](https://cybersectools.com/tools/gigamon-tlsssl-decryption) - TLS/SSL decryption for network traffic visibility and security analysis (Commercial)
4. [Nubeva SKI](https://cybersectools.com/tools/nubeva-ski) - TLS decryption solution that extracts session keys from memory for traffic inspection (Commercial)
5. [ipoque R&S PACE 2 (DPI Engine)](https://cybersectools.com/tools/ipoque-rands-pace-2-dpi-engine) - Embeddable DPI engine for real-time protocol/app classification up to L7. (Commercial)

Compare all MITMEngine alternatives at [https://cybersectools.com/alternatives/mitmengine](https://cybersectools.com/alternatives/mitmengine)

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

MITMEngine is available as on-premises software. It is listed for mid-market companies and enterprises. It is free.

## Compare MITMEngine with similar solutions

- [MITMEngine vs Solana Networks TrafficWiz](https://cybersectools.com/compare/mitmengine-vs-solana-networks-trafficwiz)
- [MITMEngine vs Fox IO JA4+](https://cybersectools.com/compare/fox-io-ja4-vs-mitmengine)
- [MITMEngine vs Gigamon TLS/SSL Decryption](https://cybersectools.com/compare/gigamon-tlsssl-decryption-vs-mitmengine)

All alternatives to MITMEngine: [/alternatives/mitmengine](https://cybersectools.com/alternatives/mitmengine)

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

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More on MITMEngine: 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