Secure Email Recipient Selection via Classification Metadata
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Solution Overview
Problem
Users face challenges in determining appropriate recipients for secure emails, particularly on mobile devices, leading to unintended leakage of classified information due to confusion about recipient security classifications during email creation and response.
Innovation Solution
A method that extracts security classification metadata from emails, compares it to a security classification policy, and presents each email with determined presentation characteristics, such as visual, tactile, or auditory cues, to aid users in selecting appropriate recipients and managing email classifications, using a mobile device with a processing unit and memory to execute instructions for secure email handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If recipients are easily added to emails, then email communication flexibility is improved, but information security deteriorates due to unintended leakage to inappropriate recipients
Solution Approach 1:
The system provides visual feedback to users about the security classification status of recipients and emails through icons and indicators. This feedback mechanism helps users understand which recipients are appropriate for which emails, enabling them to make informed decisions about recipient selection while maintaining flexibility in communication.
Solution Approach 2:
The patent uses color-coded indicators and visual cues to represent different security classifications. Recipients and emails are marked with color icons that indicate their classification level, allowing users to quickly identify compatibility and prevent accidental disclosure of sensitive information to inappropriate recipients.
2Reliability
If security classification metadata is extracted and processed, then information security is improved, but device complexity increases due to additional processing requirements
Solution Approach 1:
The system extracts and processes security classification metadata in advance, before email composition or delivery. By pre-processing classification information and storing it in a structured format, the system reduces the complexity of real-time security checks and enables faster, more reliable email handling without significant increase in processing burden.
Solution Approach 2:
The patent introduces an intermediary layer that handles the complexity of metadata extraction, schema validation, and classification matching. This intermediary component abstracts the complex security processing from the user interface, allowing simple user interactions while maintaining robust security through automated background processing.
3Ease of operation
If visual indicators are added to show email classification, then ease of operation is improved, but device complexity increases due to additional UI elements
Solution Approach 1:
The system uses simple color-coded icons and visual indicators to represent security classifications in the email interface. These visual cues are integrated into existing UI elements such as email lists, recipient fields, and composition windows, providing immediate visual feedback without adding complex interface components or requiring additional user training.
Data Source
AI summary
A method, mobile device and system are provided for managing and displaying email messages on a device having security classification metadata. The security classification metadata is extracted on the mobile device from the email messages. A presentation characteristic for the email message is determined based on a comparison of the extracted security classification metadata of the email message to a security classification policy. The email messages on the device can then be presented in accordance with the determined presentation characteristic of each respective email associated with the security classification metadata. In addition, in replying to an email in one or more subsets of recipients of the email message can be determined where each of the recipients of a respective subset having at least one security classification in common. A visual indication of at least one of the determined one or more subsets of recipients can be presented wherein the user can select the reply group to ensure that only the appropriate recipients receive the email message.