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Bfgreen
_@briangreen.net
npub1pj09...znjh
Manage like an officer, work like an analyst, train like an operator, think like a spy | Violent nomad (Ret.) | Beekeeper | Nostr since 768111 Find me > #squatpushrepeat · #watchknifepen · #aeropress
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Bfgreen 1 week ago
Quick summary of the CoinKite issue. The Coldcard Mk3 hardware wallet has a critical firmware vulnerability that results in weak, predictable seed phrase generation, which has actively been exploited to drain over $70 million worth of Bitcoin from affected wallets. The Root Cause: Flawed Entropy According to a security advisory by Coinkite and independent analysis by security researchers, the flaw stems from a programming mistake introduced in March 2021. The Bug: A code update switched the device's seed-generation function from using the hardware's True Random Number Generator (TRNG) to a broken software-based library. The Result: Instead of using absolute cryptographic randomness, the device fell back on predictable, non-secret data, like the chip's internal serial number and system clock, to seed the wallet. The Impact: This drastically reduced the wallet's security from a virtually uncrackable 128 bits of entropy down to an incredibly weak 40 to 72 bits. Attackers discovered this flaw and used automated scripts to brute-force and predict the exact seed phrases generated by these devices. Who is Affected? You are at high risk if you meet all of the following conditions: You generated your wallet's seed phrase directly on a Coldcard Mk2 or Mk3 device. The seed phrase was generated while the device was running firmware versions 4.0.0 through 5.0.3 (released between 2021 and 2023). You used a single-signature configuration without an added BIP-39 passphrase. You relied purely on the device's internal system to create the seed, rather than performing manually randomized dice rolls. Note: If you subsequently imported a weak seed phrase generated by a compromised Mk3 into a newer device (like an Mk4 or a software wallet), the funds remain fully exposed because the underlying seed itself is mathematically predictable.
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Bfgreen 1 week ago
Folks piling on with heaps of “I told you so” isn’t exactly helpful for those in a bind. Everyone’s an expert - after the fact…
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Bfgreen 1 week ago
Starting my day in the fiat mines with a very acceptable 400 ppm CO2. image
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Bfgreen 1 week ago
GM my Nostr frens. Get off Coldcard. Keep stacking and mining those sats, be kind and zap each other, and stay safe out there. ☕️⚡️
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Bfgreen 2 weeks ago
July has been a difficult month, need to get back on target, get consistent. #proofofwork image
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Bfgreen 2 weeks ago
Poor guy missing an antenna 🙁 image
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Bfgreen 2 weeks ago
A question for my #beekeeping friends... I have several hive bodies and frames that were infected by wax moth larvae. It was BAD! On advice, I cleaned them as best I could wrapped them in black plastic bags (threw in a good amount of mothballs) and sealed them up for a year. The wax moths and all their larvae are dead - but the hive bodies and frames all smell of mothballs! Question: Can I still use these hive bodies and frames next year? If I let them air out will they be usable, or will they forever be toxic or repelling to the bees? I have time now to make all new hardware, but would really like to reuse what I have. Appreciate any experienced feedback and guidance I can get. #beekeeper #asknostr #reshare #pollenators #bees | @Green Bees
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Bfgreen 2 weeks ago
Filled up my car with old beehive hardware and cranked a bunch of new frames for my boxes. Not a bad morning. #woodwork #beekeeping
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Bfgreen 2 weeks ago
GM! If you like #woodwork or beautifully made #tools - here is your Sunday morning moment of #zen !
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Bfgreen 2 weeks ago
GM my Nostr frens. Rainy morning here. Keep stacking and mining those sats, be kind and zap each other, and stay safe out there. ☕️⚡️ image