1. Show HN: Nightcrawler – A local AI pentesting agent running on a smartphone (github.com)

Local AI powered red teamer on a phone. Contribute to garagehq/nightcrawler development by creating an account on GitHub.

A new project allows users to run an AI-powered penetration testing agent directly from their smartphone. The development is open for contributions on GitHub, making it a collaborative effort for cybersecurity enthusiasts.

4. Why we write our own C and C++ inference engines (localai.io)

LocalAI is the open source AI engine. Run any model, LLMs, vision, voice, image and video, on any hardware. No GPU required.

LocalAI is an open-source AI engine capable of running various models—including LLMs and multimedia—on any hardware without the need for a GPU. Learn how writing custom C and C++ inference engines enhances its performance and compatibility.

5. Massively Parallel Postgres Backups (planetscale.com)

PlanetScale backs up petabyte-scale sharded Postgres databases in hours using parallel infrastructure, object storage, and WAL replay.

PlanetScale has developed a method to back up massive sharded Postgres databases, reaching petabyte scales, in just hours. Their approach leverages parallel infrastructure and object storage, along with Write-Ahead Logging (WAL) replay, to streamline the backup process significantly.

8. AI's debt binge can't last, hidden borrowing reaches $1.65T (fortune.com)

“At some point, the rivers of capital financing private and government debt issuance will flow less freely.”

The article discusses the unsustainable nature of current debt levels in both private and government sectors, highlighting a troubling $1.65 trillion in hidden borrowing. It warns that the easy access to capital may soon diminish, raising concerns about potential financial repercussions.

9. Train Simulator Controller (z80.me)

From January to July 2026, I have continued to work on my UK Class 800-inspired train simulator. There are a number of components in progress, but few newly completed: in lieu of posts about completed portions of the simulator, here's a roundup of progress across the different hardware aspects of the project.

Get an update on the development of a UK Class 800-inspired train simulator, including insights into the various hardware components in progress. This roundup highlights the ongoing efforts and challenges faced during its creation.

10. DDoS against Norwegian government IT infrastructure – status (status.digdir.no)

Digitaliseringsdirektoratet's Status Page - ID-porten, Kontakt- og reservasjonsregisteret, Maskinporten, MinID, eFormidling, ELMA, eInnsyn, Ansattporten, Selvbetjeningsløsninger, Altinn - Driftsproblemer.

Norwegian government IT services, including key platforms like ID-porten and Altinn, are experiencing operational issues, likely due to a DDoS attack. The status page indicates ongoing disruptions that could impact public access to essential online services.

11. Utah produced more power from solar than any other source in May, a new first (www.sltrib.com)

“Wind plus solar is on a tear right now,” said Utah climate scientist Logan Mitchell. “We may have achieved liftoff.”

Utah’s renewable energy landscape has shifted, with solar power overtaking all other sources for the first time in May. Climate scientist Logan Mitchell highlights the growing momentum of wind and solar energy in the state.

13. Launch HN: Hoplite (YC S26) – Effortlessly deploy cloud coding agents (hoplite.sh)

Effortless cloud coding agents that feel good to use.

Hoplite simplifies the deployment of coding agents in the cloud, allowing users to easily transfer their local setups and prepare projects for online execution. Founders Bence and Ryan highlight a demo showcasing how their tool enhances the QA process for features.

14. Show HN: We Fixed UniFi's Slow PPPoE Performance with PPPoE Half-Bridge (arcbox.dev)

UniFi gateways (UDM Pro/SE/Pro Max/Beast/EFG) ship with notoriously underpowered CPUs and has no hardware acceleration for PPPoE. Paired with a PPPoE-based ISP connection, the performance is dismal. So why not hand the PPPoE dialing off to a dedicated device and let the UniFi gateway focus on routing, IDS/IPS, and NAT while breaking past 5500 Mbps of throughput?

A user has developed a solution to enhance the performance of UniFi gateways when dealing with slow PPPoE connections. By offloading the PPPoE dialing to a dedicated device, they achieved significant improvements in throughput, allowing UniFi devices to better handle routing and security tasks.

16. Use Task Runners for Common Coding Tasks (hamvocke.com)

You can make your software developer life suck a bit less by using task runners to run common coding tasks consistently across multiple repositories

Task runners can streamline your development process by automating repetitive coding tasks, making it easier to maintain consistency across different projects. Learn how to implement them effectively to enhance your workflow.

19. AI migrated legacy COBOL programs to Java, bugs included (arxiv.org)

Migration of legacy COBOL programs to Java requires extensive testing to ensure correct functionality. This effort is often complicated by the lack of test data and the difficulty of validating all corner cases. In this paper we propose a novel agentic test-synthesis method, the "Locksmith Loop," which is initiated by preparing two runtime environments: the COBOL source and the generated Java target are each instrumented with mocks and executed off-mainframe on commodity hardware, then an iterative agentic loop performs Witness Search over input mocks to penetrate program branches, followed by parity-preserving mutations. When routing boundaries are reached, an analyzer identifies a Locked Paragraph: a condition preventing deeper exploration. Across three COBOL-Java case studies, spanning two open-source programs and one internal production-like COBOL program and ranging from 430 to 4,114 source lines, Locksmith consistently improved coverage beyond input-search plateaus, reaching nearly complete coverage on the two open-source programs and 91.90% branch coverage on the internal production-like COBOL program. The generated Java matched the COBOL reference under deterministic parity checks in all accepted test cases. Through these findings we demonstrate, to the best of our knowledge, a novel approach for validating agentic coding output using a deterministic oracle.

Migrating COBOL programs to Java isn’t straightforward due to testing challenges, including insufficient test data and corner case validation. The proposed “Locksmith Loop” method aims to streamline this process by using dual runtime environments to improve the reliability of the migration.

20. KisakCOD – open-source reimplementation of Call of Duty 4 Multiplayer (github.com)

COD4 Open Source Reimplementation. Contribute to SwagSoftware/KisakCOD development by creating an account on GitHub.

KisakCOD is an open-source project aimed at recreating the multiplayer experience of Call of Duty 4. Gamers and developers can contribute to its development on GitHub, fostering community-driven enhancements and updates.

22. The AI Productivity Gap (bjorg.bjornroche.com)

Why the productivity gains from AI are still small.

Despite the promise of AI to boost efficiency, recent analysis reveals that the actual productivity improvements have been minimal. Understanding the reasons behind this gap can shed light on the challenges businesses face in fully leveraging AI technologies.

24. SearXNG in Rust (github.com)

a metadata search engine similar to searxng in rust - MikeLuu99/searxng-rust

A new project is developing a metadata search engine inspired by SearXNG, but built in Rust. This initiative aims to enhance performance and reliability in search functionalities.

25. Kelly Criterion Simulator (kellysimulator.com)

A tool-first Kelly Criterion simulator modeling bankroll evolution under fixed probability and odds assumptions. Monte Carlo paths visualize distribution, volatility, drawdown, and tail risk.

This simulator models how your bankroll might evolve over time using the Kelly Criterion, factoring in fixed probabilities and odds. It provides visual insights into potential outcomes, including volatility and drawdown risks, helping bettors understand their financial exposure.

27. Flock's CEO Faced Me After Its Cameras Led to My Wrongful Stop (www.thedrive.com)

Flock CEO Garrett Langley sat down to discuss the errors that led to police stopping me and the growing fight over Flock's network of AI-powered surveillance cameras.

Flock’s CEO Garrett Langley addresses the controversy surrounding the company’s AI surveillance cameras and the wrongful police stop that resulted from their use. The discussion highlights the implications of such technology on privacy and law enforcement practices.

30. Show HN: Mu – Tools for Agents (github.com)

Tools for Agents. Contribute to micro/mu development by creating an account on GitHub.

Mu is a new toolkit aimed at developers working with agents, and it’s open for contributions on GitHub. If you’re interested in enhancing agent-based systems, this could be a valuable resource.

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