coldcard bitcoin hack

Following the endless threads on reddit/r/Bitcoin about the coldcard is kind of heartbreaaking. There are many people who lost a fortune, because they used a cold wallet instead of trusting an exchange or multisig. Coldcard had a wrong crypto implementation firmware-bug users should upgrade firmware (security advisory). "hackers" abused that vulnerability last week to drain the funds.

So beside the exchange hacks, crypto draining contracts and websites, now the cold wallets become your enemy as well, multisig or regulated exchanges might be better - but I think most people will tie cryptocurrencies to some unstable, hacky thing. Too complex to use, too unregulated to keep your money safe. That's a huge trust issue I see arising.

Never put all your money on one thing.

btc but in browser

Last friday I found a project on reddit about a crypto which is possible to POW in browser, called browsercoin. They had a fight recently with CUDA mining was way more efficient on the used algorithm, so I also jumped on the CUDA train and let AI develop an CUDA algorithm. Hashrate on CPU was ~700H/s, the first Codex Luna Medium implementation went towards 1000H/s and with discussion on fine tuning we ended up on 4000H/s - still miles away from the CUDA miners someone threw at the project at ~15k/hs, however it was a nice experience for me seeing AI develop an RFC (argon2id) backporting the algorithm from another language, implementing it in CUDA and then fine tuning based on the GPU architecture: cuda-poc-browsercoin.

edit: Update 22.07. Now they switched to sandglass which should not be efficient anymore on GPU vs. CPU.

edit: browsercoin, project page