Returned vs Gone Forever

Some hackers handed it all back; Lazarus laundered Ronin's $624M through mixers.

The top 3

  1. Poly Network — Nearly All Returned: 'Mr. White Hat' gave back almost the entire $611M and was offered a $500K bounty and an advisory role.
  2. Euler Finance — Talked Back: The $197M March 2023 flash-loan attacker returned almost everything after public on-chain negotiation.
  3. Ronin — Washed and Gone: Lazarus funneled the $624M through Tornado Cash; only a fraction was ever clawed back.

Sources

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