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Showing posts with the label cryptocurrency security

Bitcoin Core devs think it would be easy, and funny, to attack Knots | Protos

It is becoming increasingly difficult to protest Bitcoin Core version 30 (v30). Determined to roll out a major change to the Bitcoin network’s largest mempool and seal their victory over dissidents in this year’s OP_RETURN war, a pro-v30 mining pool consultant was laughing this weekend about attacking dissident nodes for sport. Although Bitcoin developer and creator of Marathon’s Slipstream mining queue did not actually sustain that attack, many pro-v30 developers were mocking at how funny it would have been. In the hypothetical attack tickled pro-v30 influencers, he described identifying Knots nodes using their Comcast residential internet Autonomous System Numbers. He would have then spun up over 90 nodes, hypothetically speaking, and repeatedly have requested an Initial Block Download from those Knots nodes. In other words, he described a Denial of Service (DoS) attack against Knots nodes. Bitcoin dev wants to ban 3,000 Knots nodes amid OP_RETURN clash Rea...

Just another day in DeFi: A hack, a rug-pull, and $10M saved

The decentralized finance (DeFi) sector is a financial frontier zone, home to some of crypto’s most risk-on experiments. As a result, few days go by without a dose of DeFi drama. But it’s not all bad news… Backdoor vulnerability left $10M at risk Security researchers at VennBuild announced the discovery of a “critical backdoor” vulnerability, in which suspected North Korean hackers had laid a trap affecting “thousands of smart contracts, leaving over $10,000,000 at risk for months.” We @VennBuild just discovered a critical backdoor on thousands of smart contracts leaving over $10,000,000 at risk for months Along with the help of security researchers @dedaub @pcaversaccio, the seals team @seal_911 and others, we managed to rescue the majority of funds… — deebeez (@deeberiroz) July 9, 2025 Read more: Whitehat hacker rescues $1.5M from first DeFi hack of 2025 Uncovered in conjunction with other researchers from Dedaub and the DeFi Security Alliance (SEAL),...