ContentPosts from @varbear..
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@varbear shared a link, 1 week, 5 days ago
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How I Reversed Amazon's Kindle Web Obfuscation Because Their App Sucked

A developer cracked Kindle Cloud Reader’s font obfuscation, sidestepping randomized glyph swaps withSVG renderingandSSIM-powered perceptual hashingto rebuild actual EPUBs. Amazon rotates font mappings every five pages, using finicky micro-paths to jam scrapers and derail OCR. It wasn’t enough. Syste..

How I Reversed Amazon's Kindle Web Obfuscation Because Their App Sucked
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@varbear shared a link, 1 week, 5 days ago
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Measuring Engineering Productivity

A former engineering leader lays out a no-nonsense framework for tracking team output without turning into Big Brother. Think:daily Slack updates,weekly GitHub changelogs,tight 1:1s,demo-fueled All-Hands, andauto-verified deploys. It leans onpublic artifacts, not peeking over shoulders - and puts th..

Measuring Engineering Productivity
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@varbear shared a link, 1 week, 5 days ago
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State of AI Report 2025

The 2025 State of AI Report just landed—China’s catching up fast on reasoning and coding. Models like DeepSeek, Qwen, and Kimi are starting to nip at OpenAI’s heels. AI is thinking longer-term now. Reinforced reasoning and rubric-style feedback are pushing models into deeper, more deliberate plannin..

State of AI Report 2025
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@varbear shared a link, 1 week, 5 days ago
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Discussion of the Benefits and Drawbacks of the Git Pre-Commit Hook

Pre-commit hooks catch secrets and fix formatting before bad stuff hits your repo. But if they’re clunky or slow, devs bail. Tools likePre-Commit,Husky, anddevenvare trying to fix that.devenvstands out—hooks are baked right into your Nix env, no extra glue scripts...

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@varbear shared an update, 1 week, 5 days ago
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Arkade’s New Off-Chain Protocol Promises Smoother Bitcoin Transactions

Arkade introduces a new protocol to enhance Bitcoin's global financial capabilities by enabling offchain payments and transaction batching, inviting developers to explore its public beta.

Arkade’s New Off-Chain Protocol Promises Smoother Bitcoin Transactions
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@varbear shared an update, 1 week, 6 days ago
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Even Your Bed Isn’t Safe from AWS Outages - Eight Sleep Learns the Hard Way

Amazon Web Services

An AWS outage disrupted Eight Sleep's smart beds, prompting plans for an "outage mode" to enhance system resilience and prevent future connectivity issues.

Eight Sleep technology
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@varbear shared a link, 2 weeks, 5 days ago
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GitHub MCP Registry: The fastest way to discover AI tools

GitHub rolled out theMCP Registry—a hub for findingModel Context Protocol (MCP) serverswithout hunting through scattered corners of the internet. No more siloed lists or mystery URLs. It's all in one place now. The goal? Cleaner access to AI agent tools, plus a path towardself-publishing, thanks to ..

GitHub MCP Registry: The fastest way to discover AI tools
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@varbear shared a link, 2 weeks, 5 days ago
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Nine HTTP Edge Cases Every API Developer Should Understand

Last February, CVE-2024-26141 punched a nasty hole inRack's Range header parsing. All versions since 1.3.0 are exposed. The bug let attackers blow up memory usage and responses—classic denial-of-service—just by crafting bloated Range headers. The trick? Custom file download handlers. They skip the u..

Nine HTTP Edge Cases Every API Developer Should Understand
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@varbear shared a link, 2 weeks, 5 days ago
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A stateful browser agent using self-healing DOM maps

A stateful browser agent using self-healing DOM maps is now available. Users describe tasks, Agent4 performs them, creates reusable workflows from interactions, and executes instantly on subsequent requests. Under the hood, it checks for known maps in a vector DB, patches them if needed, and self-he..

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@varbear shared a link, 2 weeks, 5 days ago
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Supply Chain Risk in VSCode Extension Marketplaces

Wiz dug up 550+ leaked secrets buried in 500+ public VSCode extensions—including 130+ live access tokens forVSCode MarketplaceandOpenVSX. That’s a wide-open door to supply chain attacks through auto-updates. Microsoft reacted fast: dumped the breached tokens, rolled outpre-publish secret scanning, a..