Downstream Anti-Fraud Message Inspection Before Application Queues
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Solution Overview
Problem
Existing message inspection systems fail to detect fraudulent messages with valid sender addresses, allowing them to bypass conventional filters and enter application processing queues, leading to unnecessary resource consumption and telecommunication charges.
Innovation Solution
An anti-fraud message inspection tool that performs additional checks, including string parsing, SPF validation, and country code analysis, to identify and quarantine suspicious messages before they reach application processing queues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional message inspection systems are used, then legitimate messages can be processed efficiently, but fraudulent messages with valid sender addresses can bypass filters and consume system resources
Solution Approach 1:
The system performs preliminary actions by inspecting message destination parameters (country codes, destination numbers) before messages enter the fax processing queue. This advance screening identifies fraudulent messages early, preventing them from consuming system resources while allowing legitimate messages to proceed through normal processing.
Solution Approach 2:
The inspection system segments the message processing workflow into distinct stages: conventional inspection stage, anti-fraud inspection stage (with multiple sub-checks including country code validation, destination number format verification), and processing queue stage. This segmentation allows each stage to focus on specific detection criteria, improving overall reliability without overwhelming complexity.
2Reliability
If additional inspection checks are performed on messages, then fraudulent messages can be detected, but processing time and system resources increase
Solution Approach 1:
The system applies partial inspection action by performing only the most critical and high-value checks on messages, such as validating country codes against known fraudulent patterns and verifying destination number formats. This selective approach detects the majority of fraudulent messages without requiring exhaustive analysis of every message parameter, thus minimizing processing time overhead.
Solution Approach 2:
For messages that pass the initial rapid inspection checks (country code validation, destination format verification), the system allows them to proceed quickly to the processing queue without undergoing more time-consuming analysis. This rushing through of low-risk messages maintains fast processing speeds while reserving detailed inspection for only those messages that trigger further scrutiny.
3Measurement precision
If messages are inspected against multiple criteria, then detection accuracy improves, but false positives increase and legitimate messages may be blocked
Solution Approach 1:
The inspection system applies local quality by tailoring inspection criteria to the specific characteristics of each message type and destination. For example, it uses different validation rules for international versus domestic messages, and adjusts its scrutiny level based on the specific country code and destination number format. This localized approach improves detection precision for fraudulent messages while maintaining smooth flow for legitimate messages that match expected patterns.
Solution Approach 2:
The system incorporates feedback mechanisms where inspection results are fed back into the processing decision logic. If a message fails one or more inspection criteria, it is flagged for further review or blocked. This feedback loop allows the system to learn from inspection outcomes and adjust its behavior, improving precision over time while maintaining operational smoothness through automated decision-making.
4Productivity
If high-volume messages from legitimate users are allowed to pass through, then user productivity is maintained, but fraudsters can exploit this to send spam messages
Solution Approach 1:
The system performs preliminary inspection of message destination parameters before they enter the fax processing queue, creating a protective barrier that prevents spam messages from consuming system resources. This advance screening maintains high message delivery speeds for legitimate users while blocking fraudulent messages at the point of entry.
Solution Approach 2:
The inspection system acts as an intermediary between the message source and the fax processing queue. It sits in the message flow path, performing rapid validation checks on country codes and destination formats, and making decisions about which messages proceed to processing and which are blocked. This intermediary position allows the system to protect against spam without interfering with legitimate high-volume message delivery.
Data Source
AI summary
Disclosed is an anti-fraud message inspection solution that can provide an additional level of protection after incoming messages have been examined, at ingress, by enterprise protection mechanisms (e.g., firewalls, routers, gateways, etc. with virus scanning software) and before the messages arrive in application processing queues. The anti-fraud message inspection solution includes a message inspector downstream from the enterprise protection mechanisms. The message inspector receives an email that has passed a filtering mechanism at ingress, performs a plurality of checks on the email utilizing local database files, and places the email in a suspect queue or an application processing queue depending upon whether the email fails any of the plurality of checks or passes all the plurality of checks.