Intermediary Node Link Analysis for Email Security
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Solution Overview
Problem
Existing systems fail to effectively detect and process malicious email messages, particularly those designed to deceive users into revealing sensitive information through spoofed links, which can lead to phishing attacks and data theft.
Innovation Solution
A cloud-based intermediary node analyzes email links to identify potentially malicious resources and replaces them with alternate trusted links, while also providing visual indicators of the true domain name and deactivating hyperlinks to prevent access to malicious sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If email links are left unmodified to maintain user access freedom, then user convenience is improved, but security against malicious sites deteriorates
Solution Approach 1:
The system introduces an intermediary node that acts as a mediator between the user and the email link destination. When a user clicks a link, the intermediary node intercepts the request, analyzes the destination URL against malicious site databases, and either allows passage or blocks the connection. This resolves the contradiction by maintaining user convenience (automatic interception without user action) while providing security (blocking malicious sites before access)
2Object-affected harmful factors
If all email links are blocked to ensure security, then security is improved, but user access to legitimate resources deteriorates
Solution Approach 1:
The system implements feedback mechanisms where link destinations are analyzed in real-time against updated databases of malicious and legitimate sites. The intermediary node receives feedback from security databases, analyzes the link destination, and makes intelligent decisions to allow or block access. This resolves the contradiction by providing security through active monitoring while maintaining productivity by allowing legitimate links to pass through unimpeded
3Speed
If phishing links are not detected, then message delivery speed is improved, but information security deteriorates
Solution Approach 1:
The system performs preliminary analysis of email links during the email delivery process itself, before the recipient interacts with the message. The intermediary node pre-analyzes link destinations, identifies phishing attempts, and prepares security decisions in advance. This resolves the contradiction by maintaining fast delivery (analysis happens in parallel with delivery) while ensuring security (phishing links are identified and blocked before users can access them)
Data Source
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AI summary
Malicious message detection and processing systems and methods are provided herein. According to some embodiments, the messages are emails and the method for processing emails may be facilitated by way of an intermediary node which may be cloud-based. The intermediary node may be communicatively couplable with an email client and an email server. The intermediary node may execute a method that includes analyzing a link included in an email to determine if the link is associated with a potentially malicious resource, and replacing the link with an alternate link to a trusted resource if the link is associated with a potentially malicious resource.