What are some privacy/security tools you wish exist, but don't yet?

As I synthesize the responses to the question 'What are some privacy/security tools you wish exist, but don't yet?', several key themes and tools emerge that could significantly enhance online security and privacy. The desired tools span various categories, including identity management, secure communication, data protection, and privacy-enhancing technologies. Here are some of the most compelling tools and concepts that were highlighted across the responses:

Identity and Authentication

• ·Decentralized Identity Management: A system that allows users to control their personal data and identity without relying on centralized authorities. This could be achieved through blockchain technology or other decentralized networks.
• ·Universal Interoperable Identity Authentication (UIIA): A globally accepted, decentralized identity verification system that enables users to manage access to different web services securely.
• ·Hardware-Rooted 'Second-Factor as a Service' (2FAaaS): A universal API that lets any service request a challenge token from the user's phone's Secure Element, guaranteeing the secret never leaves the enclave.

Secure Communication and Data Protection

• ·Encrypted DNS and Encrypted SNI (ESNI): Wider adoption of Encrypted DNS (e.g., DNS over HTTPS, DNS over TLS) and ESNI to prevent ISPs and censors from knowing which specific website a user is visiting.
• ·Post-Quantum Cryptography Tools: Tools that implement post-quantum cryptography to protect against future quantum attacks.
• ·Secure Multi-Party Computation (SMPC) Tools: Enable multiple parties to jointly perform computations on private data without revealing their inputs.
• ·Self-Destructing Encrypted Messaging: Messaging apps that automatically delete messages after a user-defined lifetime, ensuring temporal privacy.

Privacy-Enhancing Technologies

• ·AI-Powered Phishing Detection: Tools that use AI to analyze emails, messages, and websites in real-time to detect phishing attempts.
• ·Context-Aware Security: Tools that analyze a user's behavior, location, and other factors to detect and prevent suspicious activity.
• ·Privacy-Preserving Analytics for Organizations: Tools that enable organizations to perform data analytics without compromising individual privacy, such as through advanced encryption techniques like homomorphic encryption.
• ·Dynamic Zero-Knowledge Proofs: Enhanced zero-knowledge proofs that adaptively provide verification without revealing specific data in real-time and context-specific manners.

Other Notable Tools

• ·Universal 'Zero-Knowledge' Personal Data Vault: A vault that allows users to store personal data securely, with selective disclosure and cryptographic proof of revocation.
• ·Browser-Level 'Secure Correlation Shield': A browser feature that prevents web trackers from correlating user browsing histories across sites.
• ·AI-Generated 'Phishing-Proof' Email Signatures: Email signatures that are cryptographically bound to the sender's domain and verifiable claims, making phishing more difficult.
• ·Privacy-First Email Archive with End-to-End Encryption: An email archival system that encrypts messages client-side, ensuring the provider cannot access the content.

These tools and concepts represent a significant step forward in enhancing privacy and security online. They address various pain points, from identity management and secure communication to data protection and privacy. While there are challenges to their development and adoption, the potential benefits to users and organizations are substantial.