Client-Side Proxy MITM Attack Detection and Prevention
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Solution Overview
Problem
Current technologies fail to effectively prevent man-in-the-middle (MITM) attacks on computing device network connections, particularly in public Wi-Fi environments, where data encryption is compromised, leading to potential data leakage and increased enterprise risk.
Innovation Solution
Implementing active probing and detection methods within computing devices to identify MITM attacks, including Captive Portal detection and TLS protocol validation, with policies to alert users, block connections, and report anomalies to security servers, ensuring secure communication by validating certificates and disallowing inappropriate configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption is implemented to protect data in transit, then data security is improved, but false reports of compromised connections may occur due to improper certificate validation
Solution Approach 1:
The system performs preliminary validation of SSL certificates and certificate chains before establishing secure connections. By checking certificate validity, expiration dates, and proper chain of trust in advance, the system prevents false security reports while maintaining data encryption protection.
Solution Approach 2:
The system implements feedback mechanisms that monitor connection security status and provide real-time information about certificate validation results. This feedback loop allows the system to distinguish between actual security threats and false positives, improving the accuracy of security reporting.
2Reliability
If users are trained to install configuration profiles with root Certificate Authorities, then connection security is improved, but the complexity of device configuration increases
Solution Approach 1:
The system enables automatic certificate validation and configuration profile management. Instead of requiring users to manually install and configure root Certificate Authorities, the system performs these security functions automatically in the background, reducing configuration complexity while maintaining connection security.
3Measurement precision
If active probing and detection methods are implemented to identify MITM attacks, then detection accuracy is improved, but device processing requirements increase
Solution Approach 1:
The system implements selective active probing that performs comprehensive security checks only when suspicious conditions are detected, rather than continuously monitoring all connections. This partial action approach maintains high detection accuracy while reducing overall processing energy consumption.
4Reliability
If policies are implemented to block insecure connections and alert users, then security protection is improved, but network connectivity availability decreases
Solution Approach 1:
The system implements dynamic connection management that adapts security policies based on real-time threat assessment. Connections are blocked only when actual threats are detected, while secure connections maintain full availability. This dynamic approach balances security protection with network connectivity productivity.
Data Source
AI summary
The security of network connections on a computing device is protected by detecting and preventing compromise of the network connections, including man-in-the-middle (MITM) attacks. Communications are intercepted by a client-side proxy before being sent to a recipient designated by an application. The intercepted communication is inspected, and a first connection is determined to be used to send the communication based on the inspection. Finally, before the communication is sent via the first connection, an action is performed by the client-side proxy resulting in an indication that the first connection is compromised. The action may include comparing data associated with the first connection to data associated with known compromised connections. In various embodiments, additional security responses may subsequently be performed by the client-side proxy based on the indication that the first connection is compromised.