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Bitcoin project Second loses 0.75 BTC in cyberattack but user funds remain safe

Market News
08 Oct 2026
Bitcoin
View Source
Bearish
Bitcoin project Second loses 0.75 BTC in cyberattack but user funds remain safe

The Bitcoin project Second, which develops an implementation of the Ark Protocol, suffered a cyberattack resulting in a loss of 0.75 BTC ($62,322) from its own funds. The exploit targeted a bug in the Ark server's onboarding flow, allowing attackers to misuse virtual transaction outputs (VTXOs). Importantly, no user funds were affected due to the protocol's design, and a fix was deployed within hours. Attackers also attempted a denial-of-service attack and tried to use bitcoin linked to a previous Blink Wallet breach but failed to access user assets. This incident highlights ongoing security challenges in Bitcoin layer-two technologies like Ark, which aims to enable faster, cheaper off-chain transactions.

The Bitcoin project Second experienced a cyberattack causing a loss of 0.75 BTC. For readers following cryptocurrency markets, here is Pluang's market snapshot as of Oct 08, 2026 16:01 WIB: out of 50 major cryptocurrencies, 14 rose and 35 fell. Notable price changes include BAL at Rp16.297 (+11.14%), CRV at Rp6.953 (+9.60%), and ALGO at Rp2.316 (+8.43%).

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