Security Verification System for User-Agent Anomaly Detection
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Solution Overview
Problem
Application servers face security threats such as cross-site scripting, viruses, and automated bots, which compromise the authenticity and security of user-agent applications accessing remote services, leading to unauthorized information transmission and fraudulent ad impressions.
Innovation Solution
A user-agent application on a client device requests security tests from a security verification system, which evaluates the user-agent's identity, capabilities, and user interactions, generating a security token for verification. The security module monitors and reports actions, preventing malicious activities and ensuring the token's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security tests are performed to verify user-agent authenticity, then security against attacks like cross-site scripting and automated bots is improved, but system complexity and processing time increase
Solution Approach 1:
The patent implements preliminary security verification by requiring user-agents to complete security tests before accessing application server resources. The security verification system performs authentication and capability verification in advance, establishing trust relationships before actual service delivery. This prevents malicious actors from accessing services without proper verification, resolving the contradiction between security and system complexity by establishing security protocols upfront rather than during service delivery.
Solution Approach 2:
The patent introduces a security verification system as an intermediary component between client devices and application servers. This mediator performs security tests, verifies user-agent authenticity, and validates capabilities without requiring the application server to implement complex security logic directly. The intermediary handles security verification tasks, allowing the main system to maintain simplicity while achieving high security standards through dedicated security infrastructure.
2Reliability
If security tests are performed to verify user-agent authenticity, then security against attacks like cross-site scripting and automated bots is improved, but processing time and response delay increase
Solution Approach 1:
The security verification system performs authentication and capability verification in advance before service delivery, establishing trust relationships upfront. By completing security checks before actual service interactions, the system ensures that subsequent transactions occur between verified entities, maintaining high security while enabling faster service delivery once verification is complete. The preliminary action approach prevents security checks from delaying every individual service request.
Solution Approach 2:
The patent implements a tiered security verification approach where the system performs essential security checks and grants access based on partial verification when appropriate. For low-risk operations, the system may accept verification results from previous interactions or perform reduced validation, allowing legitimate users to access services with minimal delay. This partial action approach balances security requirements with user experience by not always requiring full verification for every interaction.
3Measurement precision
If the security verification system evaluates user-agent characteristics and interactions, then detection precision of malicious activities is improved, but the complexity of security testing and evaluation increases
Solution Approach 1:
The security verification system implements continuous monitoring and evaluation of user-agent behavior, comparing actual interactions against expected patterns. The system collects feedback from security tests, user-agent responses, and interaction patterns to refine detection algorithms and improve precision over time. This feedback mechanism enables the system to learn from past security incidents and adjust verification strategies, achieving high detection precision through iterative improvement rather than overly complex initial designs.
Solution Approach 2:
The patent dynamically adjusts security verification parameters based on risk assessment and user-agent behavior. The system modifies test complexity, verification depth, and evaluation criteria according to the perceived threat level and user-agent characteristics. For low-risk scenarios, the system reduces verification parameters to maintain speed and simplicity, while increasing precision for high-risk detections. This parameter adaptation allows the system to achieve high detection precision without consistently applying maximum complexity to all verification tasks.
Data Source
AI summary
A client device accesses content and performs actions at a remote application server via a user-agent application. The application server directs the user-agent application to a security verification system to retrieve and perform security tests. The security verification system receives information from the user-agent application describing characteristics of the user-agent application, and the security verification system selects a set of security tests to be performed by a security module executing in the user-agent application to verify that the user-agent application is accessing the application server consistent with the described user-agent application. The security verification system compares a set of test results with other user-agent applications and provides a token to the user-agent application to access the application server. The security module may also monitor and actions on the user-agent application to permit the security verification system to revise or revoke the token.