Security· ★★★· neutral·

Bitcoin wallet flaw let malicious servers steal funds during fee bumps

  • —Attack triggered when users bumped fees to speed up transactions
  • —Malicious server replaced the real transaction with a fake one
  • —At least one user lost BTC before the patch was released
  • —Flaw was in wallet software; the Bitcoin network was unaffected
Why it matters: The patch is out, but the incident shows wallet and server security remains a weak link for BTC holders.
Source: Siam Blockchain