The pending transactions signal replace-by-fee, so anyone who spots their address in the mempool has minutes to pay a higher fee and move funds first.
- A fourth wave of sweeps targeting bitcoin in Coldcard-generated addresses is underway, with researchers estimating the attacker has moved about 1,816 bitcoin, or roughly $114 million, from more than 5,200 addresses since July 30.
- Unlike earlier waves, the latest transactions appear to use bitcoin’s replace-by-fee feature, meaning victims who spot their coins in the mempool may still be able to outbid the attacker and move their funds first.
- The pattern suggests the flaw affects single-key Coldcard seeds and not multisignature setups, with the attacker sending funds to previously unused addresses that are harder to trace than in prior waves.
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The Definitive Stablecoin Landscape Series: Asia Pacific
As stablecoins move into regulated finance, APAC is becoming a key proving ground. This report maps the region’s rules, use cases, and RLUSD’s role.
Why it matters :
As stablecoins move into regulated finance, APAC is becoming a key proving ground. This report maps the region’s rules, use cases, and RLUSD’s role.
Once a $2 billion Ethereum layer-2, Blast is shutting down after assets plunge 98%
Live updates: Bitcoin reverses big early gains following soft U.S. jobs data
Tether's USDT is 'coming home' to Bitcoin after more than a decade
Payments firm OpenPayd targets year-end Nasdaq listing to fund U.S. expansion and acquisitions
Crypto job postings triple to over 1,200 in September, but applications fall
Cathie Wood says smart investors need to start watching where AI agents spend money
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