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How Mark Klein told the EFF about Room 641A [book excerpt]
🔍 "Unveiling Secrets: Mark Klein's Courageous Revelation of Room 641A"
Mark Klein, a former AT&T technician, bravely exposed the NSA's clandestine Room 641A, a secret surveillance hub, revealing the shocking extent of government snooping on citizens. His actions directly led to the EFF's (Electronic Frontier Foundation) awareness of the NSA's domestic spying program, sparking a critical debate on privacy and civil liberties.
8:05 pm, April 30, 2026
guid
https://news.ycombinator.com/item?id=47965060
source_url
https://thereader.mitpress.mit.edu/the-whistleblower-who-uncovered-the-nsas-big-brother-machine/
author_name
the-mitr
id: 2354
uid: GynPR
insdate: 2026-04-30 20:05:40
title: How Mark Klein told the EFF about Room 641A [book excerpt]
additional: 🔍 "Unveiling Secrets: Mark Klein's Courageous Revelation of Room 641A"
Mark Klein, a former AT&T technician, bravely exposed the NSA's clandestine Room 641A, a secret surveillance hub, revealing the shocking extent of government snooping on citizens. His actions directly led to the EFF's (Electronic Frontier Foundation) awareness of the NSA's domestic spying program, sparking a critical debate on privacy and civil liberties.
category: Hacker News
md5:
guid: https://news.ycombinator.com/item?id=47965060
source_url: https://thereader.mitpress.mit.edu/the-whistleblower-who-uncovered-the-nsas-big-brother-machine/
updated:
image:
author_name: the-mitr
author_link:
uid: GynPR
insdate: 2026-04-30 20:05:40
title: How Mark Klein told the EFF about Room 641A [book excerpt]
additional: 🔍 "Unveiling Secrets: Mark Klein's Courageous Revelation of Room 641A"
Mark Klein, a former AT&T technician, bravely exposed the NSA's clandestine Room 641A, a secret surveillance hub, revealing the shocking extent of government snooping on citizens. His actions directly led to the EFF's (Electronic Frontier Foundation) awareness of the NSA's domestic spying program, sparking a critical debate on privacy and civil liberties.
category: Hacker News
md5:
guid: https://news.ycombinator.com/item?id=47965060
source_url: https://thereader.mitpress.mit.edu/the-whistleblower-who-uncovered-the-nsas-big-brother-machine/
updated:
image:
author_name: the-mitr
author_link:
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- Apple sues OpenAI, accuses ex-employees of stealing trade secrets
- Apple targets dozens of OpenAI employees with legal letters
- Apple to increase spend with Broadcom to produce billions more U.S. chips
- Apple's 512GB Mac Studio vanishes, a quiet acknowledgment of the RAM shortage
- Apple's AI Can Now Change Your Passwords. What Could Possibly Go Wrong?
- Apple's MacBook Neo makes repairs easier and cheaper than other MacBooks
- Apple's accidental moat: How the "AI Loser" may end up winning
- Apple, Intel have reached preliminary chip-making deal
- Apple: Embarrassingly Simple Self-Distillation Improves Code Generation
- Applying Brevity and Language Efficiency in Prompt Engineering
- Approximating Hyperbolic Tangent
- April 2026 TLDR Setup for Ollama and Gemma 4 26B on a Mac mini
- ArXiv Declares Independence from Cornell
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- Arch Linux Now Believes Malware Incident Under Control: More Than 1,500 Packages
- Arch Linux Now Has a Bit-for-Bit Reproducible Docker Image
- Architecture Description Languages [pdf]
- Are AI Labs Pelicanmaxxing?
- Are LLMs not getting better?
- Are insecure code completions in PyCharm a vulnerability?
- Are the Mysteries of Quantum Mechanics Beginning to Dissolve?
- Are we offloading too much of our thinking to AI?
- Arena AI Model ELO History
- Arm AGI CPU
- Arm's Cortex X925: Reaching Desktop Performance
- Armstrong Effect
- Around 200 Stanford students walk out as Google CEO takes stage
- Ars Astronomica – English translations of rare Hebrew and Latin astronomy texts
- Ars Technica Fires Reporter After AI Controversy Involving Fabricated Quotes
- Ars Technica fires reporter after AI controversy involving fabricated quotes
- Ars Technica: Our newsroom AI policy
- Art Bits from HyperCard
- Artemis II Fault Tolerance
- Artemis II and the invisible hazard on the way to the Moon
- Artemis II is not safe to fly
- Artemis II safely splashes down
- Artie (YC S23) Is Hiring Software Engineers
- Artificial intelligence is not conscious – Ted Chiang
- Artificial-life: A simple (300 lines of code) reproduction of Computational Life
- As a result of a US Government directive, we are suspending access to Fable 5
- As downtown Seattle offices empty, city facing years of 'zombie' towers
- Asahi Linux 7.1 Progress Report
- Asahi Linux Progress Linux 7.0
- Ascending into the Realm of Japanese Charts
- Ashby (YC W19) Is Hiring EMEA Engineers Who Can Design
- Ashby (YC W19) Is Hiring Engineers Who Make Product Decisions
- Asian AI startups launch Mythos-like models
- Ask ChatGPT to pick a number from 1-10000, it generally selects from 7200-7500
- Ask HN: Academic study on AI's impact on software development – want to join?
- Ask HN: Add flag for AI-generated articles
- Ask HN: Anthropic banned me from using Claude Code and I don't know what to do
- Ask HN: Any AWS billing issues known? Amazon forecast of 3 billion dollars
- Ask HN: Apple terminated our dev account over a rogue employee
- Ask HN: Are most corporate SWE jobs performative?
- Ask HN: Due to spam on GitHub, what platforms can I move my projects?
- Ask HN: European Tech Alternatives?
- Ask HN: Have top AI research institutions just given up on the idea of safety?
- Ask HN: How are you all staying sane?
- Ask HN: How did you land your first projects as a solo engineer/consultant?
- Ask HN: How do you handle marketing as a solo technical founder?
- Ask HN: How is AI-assisted coding going for you professionally?
- Ask HN: How to Be Alone?
- Ask HN: How to be SOC2 Type 2 compliant as a solo-entreprenuer?
- Ask HN: Is "no source code was copied" still a sufficient copyright defense?
- Ask HN: Is GitHub preparing to go behind a login wall?
- Ask HN: Is anyone experimenting with different ways of using LLMs for coding?
- Ask HN: Is anyone working at least 4 hours daily on an Apple Vision Pro?
- Ask HN: Is it just me, or is software buggier across the board?
- Ask HN: My ISP is telling my neighbors their slow internet is because of me
- Ask HN: Please restrict new accounts from posting
- Ask HN: Remember Fidonet?
- Ask HN: Share your productive usage of OpenClaw
- Ask HN: So what happened to Facebook "localhost" tracking?
- Ask HN: What Are You Working On? (July 2026)
- Ask HN: What Are You Working On? (March 2026)
- Ask HN: What are you working on? (June 2026)
- Ask HN: What are you working on? (May 2026)
- Ask HN: Who is hiring? (June 2026)
- Ask HN: Who is hiring? (March 2026)
- Ask HN: Who wants to be hired? (June 2026)
- Ask HN: Why hasn't there been a real competitor to Ticketmaster yet?
- Ask HN: Why is the HN crowd so anti-AI?
- Ask HN: Will programmers write more efficient code during the memory shortage?
- Ask.com has closed
- Aspartame is not that bad?
- Assessing Claude Mythos Preview's cybersecurity capabilities
- Astra: An open-source observatory control software
- Astro 7.0
- Astronauts describe persistent 'observer' sensation after 6 month missions
- Astronomers Find the Edge of the Milky Way
- Astronomers find the edge of the Milky Way
- Astrophysicists Puzzle over Webb’s New Universe
- Async Programming Is Just Inject Time
- Async Rust never left the MVP state
- At Protocol: Building the Social Internet
- At least 10 people tied to sensitive US research have died or disappeared
- At long last, InfoWars is ours
- Atlassian Enables Default Data Collection to Train AI
- Atlassian defends firing engineer for suggesting CEO is 'rich jerk'
- Atlassian to cut roughly 1,600 jobs in pivot to AI
- Atomic Display Switching: Solving
- Attie.ai
- AttoChess, a complete, playable chess program for 16-bit x86 DOS in 278 bytes
- Attorney General Pam Bondi Out at DOJ
- Attractive students no longer receive better results as classes moved online
- Attyx – tiny and fast GPU-accelerated terminal emulator written in Zig
- Atuin v18.13 – better search, a PTY proxy, and AI for your shell
- Austin’s surge of new housing construction drove down rents
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- AutoKernel: Autoresearch for GPU Kernels
- Automation Without Understanding
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- Avian Visitors
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- Axios compromised on NPM – Malicious versions drop remote access trojan
- AyaFlow: A high-performance, eBPF-based network traffic analyzer written in Rust
- Azure Linux 4.0 is Microsoft's first general-purpose Linux
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- B-trees and database indexes (2024)
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- BGP ORIGIN attribute manipulation and its impact on the Internet
- BLISS
- BMW Group to deploy humanoid robots in production in Germany for the first time
- BYD is bringing its 5-min 'Flash' electric car charging to Canada
- BYD overtakes Tesla and Kia as the best-selling EV brand in key overseas markets
- BYD's bet on EVs is paying off as drivers ditch gas amid rising oil prices
- BYOMesh – New LoRa mesh radio offers 100x the bandwidth
- Back to Kagi
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- Bacteria found in the human intestine capable of improving muscle strength
- BambuStudio has been violating PrusaSlicer AGPL license since their fork
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- Banned in California
- BareMetal RAM Dumper – Bare-metal x86 tool for Cold Boot Attack experiments
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- Bashblog – a single bash script to create blogs
- Battle for Wesnoth: open-source, turn-based strategy game
- Bcachefs creator insists his custom LLM is female and 'fully conscious'
- Be Alexandra Elbakyan
- Be intentional about how AI changes your codebase
- Be skeptical of OpenAI's rogue hacker agent story
- Beautiful Type Erasure with C++26 Reflection
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- Before GitHub
- Behavior-Oriented Concurrency for Python
- Belgium stops decommissioning nuclear power plants
- Benchmarking Opus 5 on SlopCodeBench
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- Besimple AI (YC P25) Is Hiring
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- Better and Cheaper Than IPTV
- Beyond Semantic Similarity
- Beyond has dropped “meat” from its name and expanded its high-protein drink line
- Bible as RAG Database
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- Biff.core: system composition for Clojure web apps
- Big AI labs are hiring philosophers
- Big Banana Car
- Big Breakfast Alters Appetite, Gut Health
- Big Data on the Cheapest MacBook
- Big tech's anti-labor playbook has come for Wikipedia
- Biggest Probabilistic Computer Turns Noise into Answers
- Bild AI (YC W25) Is Hiring Founding Product Engineers
- Bild AI (YC W25) Is Hiring Interns to Make Housing Affordable
- Bild AI (YC W25) Is Hiring a Founding Product Engineer
- Billion-Parameter Theories
- Binary Coverage the Wrong Way
- Binary GCD
- Biology is a Burrito: A text- and visual-based journey through a living cell
- Biscuit
- Bitburner, programming-based incremental game
- Bitcoin and quantum computing
- Bitcoin miners are losing $19,000 on every BTC produced as difficulty drops 7.8%
- Bitmap fonts make computers feel like computers again
- Bitwarden scrubs 'Always free' and 'Inclusion' values from its site
- Bjarne Stroustrup: How do I deal with memory leaks? (2022)
- Blacksky AppView
- Blaise – A modern self-hosting zero-legacy Object Pascal compiler targeting QBE
- Blatant AI slop just won a 25k USD DeepMind Kaggle Grand Prize
- Block spent $68M on a single party in September 2025
- Block the "Upgrade to Tahoe" Alerts
- Block the “Upgrade to Tahoe” Alerts
- Blocking Internet Archive Won't Stop AI, but Will Erase Web's Historical Record
- Blog ran on Ubuntu 16.04 for 10 years. I migrated it to FreeBSD
- Blogger defeats photographer's copyright claim
- Blogging can just be stating the obvious
- Blood test boosts Alzheimer's diagnosis accuracy to 94.5%, clinical study shows
- Bloom (YC P26) Is Hiring
- Blorp Language
- Blue Origin's New Glenn blows up during static fire test
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- Bluesky Trademarks ATProto
- Bluesky has been dealing with a DDoS attack for nearly a full day
- Bobby Prince, composer for Doom, Wolfenstein 3D, and Duke Nukem 3D, has died
- Boffin claims Microsoft’s “quantum leap” is invalid due to “basic Python errors”
- Bombarding gamblers with offers greatly increases betting and gambling harm
- Bonsai 27B (1-bit LLM): The First 27B-Class Model to Run on a Phone
- Books Are Not Remotely Too Expensive
- Boot Naked Linux
- Bootc and OSTree: Modernizing Linux System Deployment
- Bootimus – A Self-Contained PXE and HTTP Boot Server
- Borrow-checking without type-checking
- Boss-CSS: I created another "CSS-in-JS" lib
- Bot vs human traffic
- Bouncer: Block "crypto", "rage politics", and more from your X feed using AI
- Boy I was wrong about the Fediverse
- Brazil's Pix Payment System Faces Pressure from Visa and Mastercard
- Breaking Down 50M Pins: A Smarter Way to Design 3D IC Packages
- Breaking Free
- Breakthroughs for batteries could soon make them better
- Briar Is in Maintenance Mode
- Bricks and Minifigs Stole a Man's $200k Lego Collection
- Bring Back Idiomatic Design
- Bring back crappy forums
- Bring your own Agent to MS Teams
- Bringing Chrome to ARM64 Linux Devices
- Bringing PyTorch Monarch to AMD GPUs
- Bringing Up DeepSeek-V4-Flash on AMD MI300X
- Britain is ejecting hereditary nobles from Parliament after 700 years
- Britain today generating 90%+ of electricity from renewables
- British Columbia to end time changes, adopt year-round daylight time
- British Columbia, Time Zones, and Postgres
- Bubble Sorted Amen Break
- Bucketsquatting is (finally) dead
- Buckle Up for Bumpier Skies
- Bugs Rust won't catch
- Build your own Dial-up ISP with a Raspberry Pi
- Build your own vulnerability harness
- BuildKit: Docker's Hidden Gem That Can Build Almost Anything
- Building Better Country Selects
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- Building Gin: Simple over Easy
- Building Pi with Pi
- Building Principia for Windows XP
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- Building a JavaScript runtime in one month
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- Building a SaaS in 2026 Using Only EU Infrastructure
- Building a Shell
- Building a UMatrix Replacement
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- Building a new Flash
- Building a real-time AI tutor for 5-year-olds
- Building a serial and VGA "everything console"
- Building an E2E Encrypted Chat Application with LanceDB and Libsodium
- Building an FPGA 3dfx Voodoo with Modern RTL Tools
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- Building an Open-Source Robot Vacuum – Meet Oomwoo
- Building and Shipping Mac and iOS Apps Without Ever Opening Xcode
- Building for the Future
- Building from Zero After Addiction, Prison, and a Felony
- Building from zero after addiction, prison, and a felony
- Building on ATProto
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- Building reliable agentic AI systems
- Building the TD4 4-Bit CPU
- Bun has an open PR adding shared-memory threads to JavaScriptCore
- Bun is being ported from Zig to Rust
- Bun's unreleased Rust port has 13,365 unsafe blocks
- Bun: cgroup-aware AvailableParallelism / HardwareConcurrency on Linux
- BunnyCDN has been silently losing our production files for 15 months
- Burnout is real for open source maintainers
- Bus stop balancing is fast, cheap, and effective
- Businesses with ugly AI menu redesigns
- Butterflies are in decline across North America, a look at the Western Monarch
- Byrne's Euclid
- Bytecode-to-Source Mapping
- C# strings silently kill your SQL Server indexes in Dapper
- C++26 is done ISO C++ standards meeting, Trip Report
- C++: The Documentary
- C, Just In Time!
- C/C++ projects packaged for Zig
- C64 Basic Dungeon Crawler: Goblin Attack (C64 Basic Part 8)
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- CATL's new LFP battery can charge from 10 to 98% in less than 7 minutes
- CBP Directive 3340-049B: Border Search of Electronic Devices
- CBP updated its electronic device search directive in Jan 2026
- CC-Canary: Detect early signs of regressions in Claude Code
- CC-Wiki: Turn Claude Code sessions into a shareable knowledge base wiki
- CEOs Who Think AI Replaces Their Employees Are Just Bad CEOs
- CERN levels up with new superconducting karts
- CERN to host a new phase of Open Research Europe
- CERN uses tiny AI models burned into silicon for real-time LHC data filtering
- CERT is releasing six CVEs for serious security vulnerabilities in dnsmasq
- CISA Admin Leaked AWS GovCloud Keys on GitHub
- CODA: Rewriting Transformer Blocks as GEMM-Epilogue Programs
- CPanel and WHM Authentication Bypass – CVE-2026-41940
- CPanel's Black Week: 3 New Vulnerabilities Patched After Attack on 44k Servers
- CRDTs merge concurrent edits. Why not concurrent creation?
- CSP for Pentesters: Understanding the Fundamentals
- CSS as a Query Language
- CSS is DOOMed
- CSS-Native Parallax Effect
- CSSQuake
- CT scans of BYD car parts
- CUDA-oxide: Nvidia's official Rust to CUDA compiler
- CVE-2026-25089: FortiSandbox unauthenticated command injection added to CISA KEV
- CVE-2026-28952: Apple macOS 26.5 Kernel Vuln found by Claude
- CVE-2026-31431: Copy Fail vs. rootless containers
- CVE-2026-3888: Important Snap Flaw Enables Local Privilege Escalation to Root
- CVE-Bench: testing LLM agents on real-world vulnerability patches
- Cal.diy: open-source community edition of cal.com
- California bill would require patches or refunds when online games shut down
- California farmers to destroy 420k peach trees following Del Monte bankruptcy
- California ghost-gun bill wants 3D printers to play cop, EFF says
- California moves to exempt Linux from its age-verification law after backlash
- California to begin ticketing driverless cars that violate traffic laws
- California's Battery Array Is as Powerful as 12 Nuclear Power Plants
- California's Digital Age Assurance Act, and FOSS
- Cambodia unveils a statue of famous landmine-sniffing rat Magawa
- Can Claude Fly a Plane?
- Can I disable all data collection from my vehicle?
- Can LLMs Perform Deep Technical Comprehension of Computer Architecture Papers
- Can We Understand How Large Language Models Reason?
- Can a MUD evaluate LLMs? A $99 proof of concept
- Can a wealthy family change the course of a deadly brain disease?
- Can the stockmarket swallow Anthropic, SpaceX and OpenAI?
- Can we code our way out of gentrification?
- Can we have the day off?
- Can you instruct a robot to make a PBJ sandwich?
- Can you stop beans from making you gassy?
- Can't Stop the Signal. Poison It
- Canada is looking to build up to 10 new nuclear reactors over the next 15 years
- Canada plans 'nuclear renaissance' with up to 10 reactors built by 2040
- Canada to order military plane fleet from Sweden in shift from US suppliers
- Canada's bill C-22 mandates mass metadata surveillance
- Canada's bill C-22 mandates mass metadata surveillance of Canadians
- Canada’s Bill C-22 Is a Repackaged Version of Last Year’s Surveillance Nightmare
- Cancel ChatGPT AI boycott surges after OpenAI pentagon military deal
- Cannabinoids remove plaque-forming Alzheimer's proteins from brain cells
- Cannabinoids remove plaque-forming Alzheimer's proteins from brain cells (2016)
- Cannibalism
- Canonical Under Attack
- Canvas (Instructure) LMS Down in Ongoing Ransomware Attack
- Canvas is down as ShinyHunters threatens to leak schools’ data
- Capability-Based Security for Redox: Namespace and CWD as Capabilities
- Capitalism Gone Wrong
- Capstone – multi-platform, multi-architecture disassembly framework
- Captcha proves you're human. HATCHA proves you're not
- Capybara: A Unified Visual Creation Model
- CarPlay Is Additive
- Carbon dioxide overload in human blood suggests a toxic atmosphere in 50 years
- Cardiorespiratory fitness is associated with lower anger and anxiety
- Care homes and hotels in Japan shut as expansion strategy unravels
- Carrot Disclosure: Forgejo
- Cars collect a startling amount of data about you
- Cartoon Network Flash Games
- CasNum
- Case study: recovery of a corrupted 12 TB multi-device pool
- Cash Issuing Terminals
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- Castor: CERN Advanced STORage Manager
- Casus Belli Engineering
- Cat (YC S22) Seeks Fractional Engineer to Build AI-Native Growth Toolkit
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- Celebrating Tony Hoare's mark on computer science
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- Cessation of public development of Kefir C compiler
- Changes in the system prompt between Claude Opus 4.6 and 4.7
- Changes to OpenTTD Distribution on Steam
- Changing How We Develop Ladybird
- Chaos and Dystopian news for the dead internet survivors
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- Charge Robotics (YC S21) Is Hiring Software and Hardware Engineers
- ChatGPT Images 2.0
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- Chatto is now Open Source
- Cheap Iranian drone downed $25M US Army helicopter–maybe by chance
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- Chibil: A C compiler targeting .NET IL
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- Childhood Computing
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- China sentences official to death for taking $325M in bribes
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- Chip Off the Old Block
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- Choosing a Public DNS Resolver
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- Chrome removes claim of On-device Al not sending data to Google Servers
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- Chuck Norris has died
- Chuwi Minibook X
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- Circle Medical (YC S15) Is Hiring a Mobile Engineer
- Circuit-level PDP-11/34 emulator
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- Cirrus Labs to join OpenAI shut down Circus CI on Monday, June 1, 2026
- Cisco workforce reductions
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- Clarification on the Notepad++ Trademark Issue
- Classic Amiga titles, free to download
- Claude Account Suspended Seconds After Purchase?
- Claude Brain
- Claude Code Cheat Sheet
- Claude Code Found a Linux Vulnerability Hidden for 23 Years
- Claude Code LSP
- Claude Code Remote Control
- Claude Code Unpacked : A visual guide
- Claude Code as a Daily Driver: Claude.md, Skills, Subagents, Plugins, and MCPs
- Claude Code conducts A/B tests on core features
- Claude Code runs Git reset –hard origin/main against project repo every 10 mins
- Claude Code sends 33k tokens before reading the prompt; OpenCode sends 7k
- Claude Code to be removed from Anthropic's Pro plan?
- Claude Code wiped our production database with a Terraform command
- Claude Code – Everything You Can Configure That the Docs Don't Tell You
- Claude Code, Claude Cowork and Codex #5
- Claude Code: Channels
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- Claude Fable 5
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- Claude Fable 5: mid-tier results on coding tasks
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- Claude Fable produced a counterexample to the Jacobian Conjecture
- Claude Is Not Your Architect. Stop Letting It Pretend
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- Claude Opus 5
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- Clojure Hosted on Go
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- Closure of the Weatheradio Service in Canada
- Closure of the Weatheradio service in Canada
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- Cloud VM benchmarks 2026
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- Cloudflare Email Service: now in public beta. Ready for your agents
- Cloudflare Flagship
- Cloudflare crawl endpoint
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- Cloudflare launched self-managed OAuth for all
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- Codeberg Bans Cryptocurrency Projects
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- Codex Micro
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- Codex pricing to align with API token usage, instead of per-message
- Codex scraped the ICM website and discovered 2026 Fields Medal winner list
- Codex-maxxing
- Coding Agents Could Make Free Software Matter Again