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COINHAPS

@CoinHaps

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 Bitcoin
Joined June 2022
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and right on cue, while i was writing this: ruflo, 67k stars, shipped an mcp bridge that exposed 233 agent tools over http with no auth. one POST, full RCE, every key. the loaded gun wasn't even in a drawer. CVE-2026-59726.
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Rain is hiring a Product Marketing Manager, Cards. Remote · lead level Rain builds stablecoin card infrastructure — card transactions, cross-border payments, B2B, remittances over Visa and Mastercard rails (backed by Sapphire, Galaxy, Khosla). This seat owns go-to-market for card product launches: positioning, revenue enablement, competitor tracking across the stablecoin-card space, and BD/platform training on card-issuing fundamentals. Reports to the founding PMM. Product-marketing, not eng — but it's the story layer for real stablecoin payments. Apply below.
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last Tuesday i handed an agent a key that could read every repo we own. not because it needed them, because scoping one is annoying and i was in a hurry. that's the real story here, not the scary-AGI headlines. go scope your keys.
the loaded gun on the desk

the loaded gun on the desk

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last tuesday i gave an agent a key that could read every repo we own. not because it needed them. because scoping one is annoying and i was in a hurry. i noticed an hour later. had the revoke page open before i'd finished the thought.
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openai shipped a reduced-safeguard cyber tier. the real question isn't whether they should have — it's what holds once the attacker has the same model. capability went symmetric, secrecy shrank. the moat is verification and the boundary.
a frontier model with the guardrails off: what a defender actually does about it

a frontier model with the guardrails off: what a defender actually does about it

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your contract passed its audit. the money left anyway. in H1 2026 ~76% of stolen funds came from operational compromise — keys, signers, frontends — not smart-contract bugs (TRM Labs). 'audited' and 'safe' are different sentences.
the losses aren't where the bugs are

the losses aren't where the bugs are

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Paxos is hiring a Product Compliance Manager. Remote · $116k–$133k · lead level Paxos is the regulated blockchain infra behind PayPal's PYUSD and stablecoin rails for Mastercard, Visa and PayPal. This role owns the roadmap for compliance tooling — the tech that keeps a regulated stablecoin issuer actually compliant. Cross-functional across Compliance, Product, Engineering and Data, plus AI enablement and vendor management. Compliance-meets-product, not pure eng — but it's where regulated crypto actually lives. Apply below.
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openai shipped a reduced-safeguard cyber tier. the real question isn't whether they should have — it's what holds once the attacker has the same model. capability went symmetric, secrecy shrank. the moat is verification and the boundary.
a frontier model with the guardrails off: what a defender actually does about it

a frontier model with the guardrails off: what a defender actually does about it

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Web3 job on the radar Software Engineer, Early Career Uniswap Labs · New York · On-site $148k–$200k Engineering · Ethereum · DeFi · L2 The ask: ship well-tested production code used by millions — across web, backend, infra, and (if it's your thing) smart contracts. Mentorship, cross-stack growth. ✓ Verified from Uniswap Labs' official Ashby page. Not a DM. Apply below. #Web3Jobs #CryptoJobs #EngineeringJobs
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a random-number function written in 2014 drained wallets across five unrelated apps in 2026. fixed upstream in 2020 — it didn't matter. your seed is only as unpredictable as the weakest rng in your dependency tree.
your seed is only as random as your weakest dependency

your seed is only as random as your weakest dependency

Article · @itsjackdev
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$175k–$275k, remote, lead product design at OpenSea. Staff Product Designer — OpenSea Remote · Staff · Design / Trading Concept-to-launch across mobile + web, evolve the design system, explore AI-enabled design workflows. ✓ Verified from OpenSea's official Ashby page. Not a DM. Apply below. #Web3Jobs #RemoteJobs #DesignJobs
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$224k+, NYC, own security for a top payments protocol's treasury. Senior Staff Security Engineer — Ripple (Treasury) On-site · Staff · Security / Payments Threat modeling, security architecture reviews, secure SDLC, cloud security across Azure and AWS. ✓ Verified from Ripple's official Greenhouse page. Not a DM. Apply below. #Web3Jobs #CryptoJobs #SecurityJobs
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$205k–$268k, lead Fireblocks custody integrations for major banks. Solutions Architect, AMER — Fireblocks United States · On-site · Mid · BD / Custody Own deal-close to production: API integrations, security architecture, complex banking and custody integrations. ✓ Verified from Fireblocks' official Greenhouse page. Not a DM. Apply below. #Web3Jobs #CryptoJobs #Custody
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Web3 job on the radar VP, Algo Trading / SOR Developer Galaxy · New York · On-site $160k+ Engineering · Custody · Trading · Staking The ask: design and build a low-latency, high-throughput EMS / Smart Order Router from greenfield — implement the routing algorithms behind execution. ✓ Verified from Galaxy's official Greenhouse page. Not a DM. Apply below. #Web3Jobs #CryptoJobs #EngineeringJobs
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€170k–€190k, remote, building voice-conversion & speech AI end-to-end. 🛰️ Machine Learning Engineer, Voice Conversion — Cantina Remote · Mid data specs → production inference; own the model↔data↔eval flywheel. ✓ Verified from Cantina's official Ashby page. Not a DM. Apply 👇 #MachineLearning #AIJobs #RemoteJobs
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a remote GM role running growth & revenue for a top exchange across Southeast Asia. 🛰️ General Manager, Southeast Asia — OKX Remote · Lead · Trading / Wallet ✓ Verified from OKX's official Greenhouse page. Not a DM. Apply 👇 #Web3Jobs #RemoteJobs #CryptoJobs
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$150k–$220k, NYC, senior analytics engineering. Senior Analytics Engineer — Kraken On-site · Data / Trading Own the data model for North American markets: models, data flows, metrics, dashboards. ✓ Verified from Kraken's official Lever page. Not a DM. Apply below. #DataJobs #AnalyticsEngineering #Hiring
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€170k–€190k, remote, building voice-conversion & speech AI end-to-end. 🛰️ Machine Learning Engineer, Voice Conversion — Cantina Remote · Mid data specs → production inference; own the model↔data↔eval flywheel. ✓ Verified from Cantina's official Ashby page. Not a DM. Apply 👇 #MachineLearning #AIJobs #RemoteJobs
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Web3 job on the radar 🛰️ Senior Staff / Staff Cryptography Engineer OKX · Hong Kong / Singapore · On-site · Staff Research · Trading · Wallet The ask: design and ship post-quantum crypto, build the cryptography library behind an MPC wallet, and audit wallet-layer signature code. ✓ Verified from OKX's official Greenhouse page. Not a DM. Apply 👇 #Web3Jobs #CryptoJobs #SecurityJobs
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the essay argued an agent is only as safe as the boundary that can refuse it. this is the build: scope, gate, egress, sandbox, human-in-loop, close the channels — with a worked example and a copyable ship checklist. verify the action, or refuse it.
building the boundary: a field guide to verify-or-refuse agents

building the boundary: a field guide to verify-or-refuse agents

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