Security
Second's Bitcoin (BTC) Ark System Drained of 0.75 BTC in Onboarding Exploit
COINOTAG·October 8, 2026·1 min read
Second lost 0.75 BTC, worth $62,322, to an exploit in its Ark onboarding flow. User funds sat in pre-signed exit paths, and a patch shipped within hours. The incident underscores risks in Bitcoin layer-2 onboarding processes, though the quick response limited the damage.
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