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2025’s biggest crypto hacks: From exchange breaches to DeFi exploits

Protos takes a look back at 2025’s biggest, strangest, and most significant crypto hacks. Have we learned anything?

Is an AI hacker targeting old DeFi projects in $5M spree?

Old Ribbon Finance, Yearn Finance and Rari Capital contracts were hacked. Are attackers using AI to scan for missed opportunities in DeFi?

Jill Gunter, a 10-year crypto veteran, had $30,000 drained due to an 8-month-old vulnerability in a ThirdWeb contract.

The hacker behind Sunday evening’s $9M exploit of DeFi yield farm Yearn Finance lost $2.4M when 850 pxETH was burned from their wallet.

Authorities suspect that North Korea’s Lazarus hacking group is behind the exploit of Upbit’s Solana wallet.