MitM Phishing Detection via HTTP Header Analysis

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing technologies struggle to effectively detect and mitigate Man-in-the-Middle (MitM) phishing attacks, as these attacks do not host any phishing content of their own and resemble legitimate websites, making content-based detection methods ineffective.

Innovation Solution

A two-stage detection method is employed, analyzing HTTP response headers to identify target brands and verify the legitimacy of security-related headers, allowing for inline detection of MitM phishing attacks without relying on content analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If content-based detection methods are used to identify phishing attacks, then detection accuracy for traditional phishing is improved, but detection effectiveness against MitM phishing deteriorates because MitM attacks do not host any phishing content of their own and resemble legitimate websites

Engineering Contradiction:
Improvedetection accuracyVSAvoiddetection effectiveness
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent extracts and analyzes HTTP response headers as a separate feature set independent of webpage content. By focusing on headers (which contain security-related information, branding, and technical metadata) rather than content, the system achieves detection capability against MitM phishing that preserves both detection accuracy for traditional phishing and detection effectiveness against contentless MitM attacks

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of analyzing webpage content to detect phishing (traditional approach), the patent inverts the detection approach by analyzing HTTP response headers. This inversion enables detection of MitM phishing attacks that have no phishing content of their own, as headers contain immutable security and branding information that differs between legitimate and phishing sites

Inventive Principle:
Principle #13The other way round (Inversion)

2Speed

If automated detection systems are implemented to identify MitM phishing attacks in real-time, then response speed is improved, but computational resources and processing time increase

Engineering Contradiction:
Improveresponse speedVSAvoidcomputational resources
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The patent extracts only essential header fields from HTTP responses for analysis, avoiding comprehensive content scanning. This selective extraction of header information (such as security-related headers, branding headers, and technical metadata) reduces computational overhead while maintaining detection speed and accuracy

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs partial analysis by focusing only on specific header fields rather than complete webpage content. This partial action approach achieves sufficient detection accuracy with significantly reduced computational resources and processing time, enabling real-time mitigation of MitM phishing attacks

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20250330491A1Prevention of man-in-the-middle phishing
Publication Date: 2025.10.23 PALO ALTO NETWORKS INC
  • US20250330491A1 patent drawing
  • US20250330491A1 patent drawing
  • US20250330491A1 patent drawing

AI summary

Techniques for prevention of man-in-the-middle phishing are disclosed. In some embodiments, a system/process/computer program product for prevention of man-in-the-middle (MitM) phishing includes monitoring a session, wherein the session includes a request to access a website; evaluating a payload associated with the request to access the website using a MitM phishing profile to determine that the request to access the website matches at least in part the MitM phishing profile; and performing a remedial action in response to determining that the payload is associated with MitM phishing activity.