1/2. Congrats @kraken for contributing to secure the ecosystem!
Your attack is very close to the one we implemented a year ago https://donjon.ledger.com/Unfixable-Key-Extraction-Attack-on-Trezor/ …
As the attack is not fixable, we preferred not sharing the details to avoid exploitation on the field.https://twitter.com/krakenfx/status/1223253508956266496 …
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2/2. The attack is indeed feasible with a low-cost hardware. We built our own card to ensure this. With a few additional efforts you might be able to dump the WHOLE chip in less than 1 minutepic.twitter.com/YuUvvcPpOy
07:40 - 31. sij 2020.
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It took Kraken Security Labs just 15 minutes to hack both of