lharries has created and shared a minimal, command-line based WhatsApp server implementation written in Go. This server, dubbed "whatsapp-mcp," implements the WhatsApp Multi-Device Capability (MCP) protocol, allowing users to connect and interact with WhatsApp from their own custom client applications or potentially integrate it with other systems. The project is described as experimental and aims to provide a foundation for others to build upon or explore the inner workings of WhatsApp's multi-device architecture.
This project presents a tiny JavaScript PubSub implementation weighing in at a mere 163 bytes. It provides basic publish and subscribe functionality, allowing developers to broadcast messages on specific topics (strings) and have subscribed functions execute when those topics are published to. The library focuses on extreme minimalism, sacrificing features like wildcard subscriptions or complex message filtering for an incredibly small footprint. This makes it suitable for resource-constrained environments or situations where a full-fledged PubSub library would be overkill.
Hacker News users discussed the minimalist JavaScript pub/sub implementation, praising its small size and cleverness. Some questioned its practicality for complex applications, suggesting larger libraries like mitt might be more suitable due to features like wildcard subscriptions and unsubscribing. Others debated the value of minimizing bundle size in modern web development, with some arguing that 163 bytes is a negligible saving. A few commenters suggested improvements or alternative implementations, including using a Map instead of an object for storing subscriptions to avoid prototype pollution issues. Overall, the reception was positive, though tinged with pragmatic considerations regarding real-world usage.
Apple is reportedly planning to add support for encrypted Rich Communication Services (RCS) messaging between iPhones and Android devices. This means messages, photos, and videos sent between the two platforms will be end-to-end encrypted, providing significantly more privacy and security than the current SMS/MMS system. While no official timeline has been given, the implementation appears to be dependent on Google updating its Messages app to support encryption for group chats. This move would finally bring a modern, secure messaging experience to cross-platform communication, replacing the outdated SMS standard.
Hacker News commenters generally expressed skepticism about Apple's purported move towards supporting encrypted RCS messaging. Several doubted Apple's sincerity, suggesting it's a PR move to deflect criticism about iMessage lock-in, rather than a genuine commitment to interoperability. Some pointed out that Apple benefits from the "green bubble" effect, which pressures users to stay within the Apple ecosystem. Others questioned the technical details of Apple's implementation, highlighting the complexities of key management and potential vulnerabilities. A few commenters welcomed the move, though with reservations, hoping it's a genuine step toward better cross-platform messaging. Overall, the sentiment leaned towards cautious pessimism, with many anticipating further "Apple-style" limitations and caveats in their RCS implementation.
Revolt is a free and open-source alternative to Discord, offering a similar feature set with a focus on user privacy and community control. It features text and voice channels, direct messaging, file sharing, rich text editing, and voice chat, all hosted on its own servers. Revolt aims to provide a transparent and extensible platform, allowing users to self-host or contribute to its development. Its client is available on desktop and web, with mobile apps planned for the future. The project prioritizes community involvement and customization, giving users more control over their communication experience.
Hacker News users discussed Revolt's potential as a Discord alternative, praising its open-source nature and commitment to user privacy. Several commenters expressed interest in self-hosting, viewing it as a significant advantage. Some questioned Revolt's long-term viability and ability to compete with Discord's network effects and feature set, while others pointed to Matrix as a more established alternative. Concerns were also raised about moderation challenges and potential abuse on a decentralized platform. A few users shared their positive experiences using Revolt, highlighting its performance and clean interface, though acknowledging it's still under development. Overall, the comments reflect cautious optimism about Revolt, with many hoping it succeeds but recognizing the hurdles it faces.
Delta Chat is a free and open-source messaging app that leverages existing email infrastructure for communication. Instead of relying on centralized servers, messages are sent and received as encrypted emails, ensuring end-to-end encryption through automatic PGP key management. This means users can communicate securely using their existing email addresses and providers, without needing to create new accounts or convince contacts to join a specific platform. Delta Chat offers a familiar chat interface with features like group chats, file sharing, and voice messages, all while maintaining the decentralized and private nature of email communication. Essentially, it transforms email into a modern messaging experience without compromising user control or security.
Hacker News commenters generally expressed interest in Delta Chat's approach to secure messaging by leveraging existing email infrastructure. Some praised its simplicity and ease of use, particularly for non-technical users, highlighting the lack of needing to manage separate accounts or convince contacts to join a new platform. Several users discussed potential downsides, including metadata leakage inherent in the email protocol and the potential for spam. The reliance on Autocrypt for key exchange was also a point of discussion, with some expressing concerns about its discoverability and broader adoption. A few commenters mentioned alternative projects with similar aims, like Briar and Status. Overall, the sentiment leaned towards cautious optimism, acknowledging Delta Chat's unique advantages while recognizing the challenges of building a secure messaging system on top of email.
Microsoft is shutting down its classic Skype for Business Online service on May 5, 2025. The company has been encouraging users to migrate to Microsoft Teams, its newer communication and collaboration platform, for several years. While consumer Skype will remain unaffected, businesses still using the legacy Skype for Business platform are urged to complete their transition to Teams before the deadline to avoid disruption. Microsoft highlights Teams' enhanced features and integration with other Microsoft 365 services as key benefits of the switch.
Hacker News commenters largely lament the loss of Skype, focusing on its previously excellent quality and reliability, particularly for international calls. Many express frustration with Microsoft's handling of the platform, believing they intentionally let it degrade after acquisition. Some suggest Microsoft prioritized Teams integration to the detriment of Skype's core functionality. Alternatives like Zoom, Teams, and Discord are discussed, but several users feel none fully replicate Skype's specific strengths, like its robust handling of poor connections. A few commenters also reminisce about Skype's history and innovative features, noting its pioneering role in video calling and screen sharing.
Reports suggest Microsoft is planning to shut down Skype for Business Server in 2025, although the consumer Skype app will seemingly remain. After acquiring Skype in 2011, Microsoft gradually shifted focus to its Teams platform, integrating many of Skype's features and positioning Teams as the preferred communication tool for both business and personal use. This has led to a perceived neglect of Skype, with limited updates and dwindling user engagement, ultimately paving the way for its eventual demise in the enterprise space.
Hacker News users generally agree that Skype's decline is attributable to Microsoft's mismanagement. Several commenters point to missed opportunities, like failing to capitalize on mobile messaging and neglecting the platform's UI/UX, leading to a clunky and less desirable experience compared to competitors. Some users reminisced about Skype's early dominance in video calling, while others criticized the integration of Lync/SfB, arguing it made Skype more complex and less appealing for personal use. The forced migration of Skype users to Teams is also a common complaint, with many expressing frustration over the loss of features and a perceived degradation in call quality. A few commenters suggest the downfall began with the eBay acquisition and subsequent sale to Microsoft, highlighting a series of poor decisions that ultimately led to Skype's demise. There's a sense of disappointment in what Skype could have been, coupled with resignation to its inevitable fate.
The blog post explores the performance limitations of Kafka when dealing with small messages and high throughput. The author systematically benchmarks Kafka's performance under various configurations, focusing on the impact of message size, batching, compression, and acknowledgment settings. They discover that while Kafka excels with larger messages, its performance degrades significantly with smaller payloads, especially when acknowledgements are required. This degradation stems from the overhead associated with network round trips and metadata management, which outweighs the benefits of Kafka's design in such scenarios. Ultimately, the post concludes that while Kafka remains a powerful tool, it's not ideally suited for all use cases, particularly those involving small messages and strict latency requirements.
HN users generally agree with the author's premise that Kafka's complexity makes it a poor choice for simple tasks. Several commenters shared anecdotes of simpler, more efficient solutions they'd used in similar situations, including Redis, SQLite, and even just plain files. Some argued that the overhead of managing Kafka outweighs its benefits unless you have a genuine need for its distributed, fault-tolerant nature. Others pointed out that the article focuses on a very specific, low-throughput use case and that Kafka shines in different scenarios. A few users mentioned kdb+ as a viable alternative for high-performance, low-latency needs. The discussion also touched on the challenges of introducing and maintaining Kafka, including the need for dedicated expertise.
Signal's cryptography is generally well-regarded, using established and vetted protocols like X3DH and Double Ratchet for secure messaging. The blog post author reviewed Signal's implementation and found it largely sound, praising the clarity of the documentation and the overall design. While some minor theoretical improvements were suggested, like using a more modern key derivation function (HKDF over SHA-256) and potentially exploring post-quantum cryptography for future-proofing, the author concludes that Signal's current cryptographic choices are robust and secure, offering strong confidentiality and integrity protections for users.
Hacker News users discussed the Signal cryptography review, mostly agreeing with the author's points. Several highlighted the importance of Signal's Double Ratchet algorithm and the trade-offs involved in achieving strong security while maintaining usability. Some questioned the practicality of certain theoretical attacks, emphasizing the difficulty of exploiting them in the real world. Others discussed the value of formal verification efforts and the overall robustness of Signal's protocol design despite minor potential vulnerabilities. The conversation also touched upon the importance of accessible security audits and the challenges of maintaining privacy in messaging apps.
DM is a lightweight, unofficial Discord client designed to run on older Windows operating systems like Windows 95, 98, ME, and newer versions. Built using the Delphi programming language, it leverages Discord's web API to provide basic chat functionality, including sending and receiving messages, joining and leaving servers, and displaying user lists. While not offering the full feature set of the official Discord client, DM prioritizes minimal resource usage and compatibility with older hardware.
Hacker News users discuss the Discord client for older Windows systems, primarily focusing on its novelty and technical ingenuity. Several express admiration for the developer's skill in making Discord, a complex modern application, function on such outdated operating systems. Some question the practical use cases, while others highlight the potential value for preserving access to communities on older hardware or for specific niche applications like retro gaming setups. There's also discussion around the technical challenges involved, including handling dependencies and the limitations of older APIs. Some users express concern about security implications, given the lack of updates for these older OSes. Finally, the unconventional choice of Pascal/Delphi for the project sparks some interest and debate about the suitability of the language.
The blog post "Let's talk about AI and end-to-end encryption" explores the perceived conflict between the benefits of end-to-end encryption (E2EE) and the potential of AI. While some argue that E2EE hinders AI's ability to analyze data for valuable insights or detect harmful content, the author contends this is a false dichotomy. They highlight that AI can still operate on encrypted data using techniques like homomorphic encryption, federated learning, and secure multi-party computation, albeit with performance trade-offs. The core argument is that preserving E2EE is crucial for privacy and security, and perceived limitations in AI functionality shouldn't compromise this fundamental protection. Instead of weakening encryption, the focus should be on developing privacy-preserving AI techniques that work with E2EE, ensuring both security and the responsible advancement of AI.
Hacker News users discussed the feasibility and implications of client-side scanning for CSAM in end-to-end encrypted systems. Some commenters expressed skepticism about the technical challenges and potential for false positives, highlighting the difficulty of distinguishing between illegal content and legitimate material like educational resources or artwork. Others debated the privacy implications and potential for abuse by governments or malicious actors. The "slippery slope" argument was raised, with concerns that seemingly narrow use cases for client-side scanning could expand to encompass other types of content. The discussion also touched on the limitations of hashing as a detection method and the possibility of adversarial attacks designed to circumvent these systems. Several commenters expressed strong opposition to client-side scanning, arguing that it fundamentally undermines the purpose of end-to-end encryption.
Summary of Comments ( 101 )
https://news.ycombinator.com/item?id=43532967
Hacker News users discussed the potential security and privacy implications of running a custom WhatsApp server. Some expressed concerns about the complexity and potential vulnerabilities introduced by deviating from the official WhatsApp infrastructure, particularly regarding end-to-end encryption. Others questioned the practicality and legality of using such a server. Several commenters were curious about the project's motivations and specific use cases, wondering if it was intended for legitimate purposes like testing or research, or for more dubious activities like bypassing WhatsApp's limitations or accessing user data. The lack of clarity on the project's goals and the potential risks involved led to a generally cautious reception.
The Hacker News post "Show HN: WhatsApp MCP Server" linking to a Github repository for a WhatsApp MCP server implementation generated several comments discussing various aspects of the project and related topics.
A significant number of comments focused on the complexities and challenges associated with implementing the WhatsApp protocol, with some expressing skepticism about the project's completeness and ability to handle the nuances of the real-world WhatsApp infrastructure. Several users questioned the robustness of the implementation, especially concerning encryption and security considerations, given the sensitive nature of WhatsApp communications. There were inquiries about how the project handled end-to-end encryption and whether it truly replicated the official WhatsApp server behavior, or if it was simply a proof-of-concept or a partial implementation.
Some commenters discussed the potential legal and ethical implications of running a custom WhatsApp server, highlighting the terms of service violations that could arise from such activities. Concerns were also raised regarding the possibility of the project being misused for spamming or other malicious purposes.
A few comments delved into the technical details of the project, discussing the choice of Erlang for the implementation and comparing it to other potential language choices. There was also discussion around the feasibility of scaling such a server to handle a large number of users and messages.
Some users expressed interest in using the project for personal messaging or creating private WhatsApp networks, while others saw potential applications in research and security analysis. However, these comments were often coupled with acknowledgements of the potential risks and challenges involved.
A particularly compelling thread of discussion centered around the reverse-engineering efforts required to understand the WhatsApp protocol, with several commenters expressing admiration for the work involved in such a project. This led to a broader discussion on the complexities of closed protocols and the challenges faced by developers trying to interoperate with them.
Overall, the comments reflected a mixture of curiosity, skepticism, and concern regarding the project. While some were intrigued by the technical aspects and potential applications, others highlighted the significant challenges and ethical considerations associated with implementing a custom WhatsApp server. Notably absent were comments from the original poster addressing the numerous questions and concerns raised by the community.