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YubiKeys are vulnerable to cloning attacks thanks to newly discovered side channel
(arstechnica.com)
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For the price they charge, they should be made so that opening the case will destroy the contents. They could have at least potted them.
Potted?
Encasing the circuit board in epoxy. It makes it very difficult to access components without destroying it. It's also great for water proofing and increasing the mechanical robustness.
Potting Grrrr. My fancy track lighting has been potted. It sucks because absolutely no place (even China) sells the 48v LED driver with the odd body shape to bypass the internal mounting screws, and the potting means I can't access the board to desolder a resostor or something