Hack history / Monthly reports / 2025-12
Crypto hacks and thefts, December 2025
Thefts are hacks, exploits, phishing, scams and rug pulls, in dollars at the time. A single source for $500M or more waits for a second source before it counts.
Taken
$35.4M
22 thefts
vs the month before
−87%
−87% ($263.3M)
vs a year earlier
+187%
+187% ($12.3M)
Largest thefts
Yearn Ether 01 · Incorrect Share Accounting$9MTrust Wallet Wallet 25 · Supply Chain Attack$8.5MUnleash Protocol 30 · Private Key Compromised$3.9MFlow 27 · Infinite Mint$3.9MRibbon 12 · Improper Access Control$2.7MRari Capital 10 · Uninitialized Proxy$2MPrysm consensus client bug causes Ethereum validators to lose over $1 million 04 · Hack or exploit$1.2MUSPD 04 · Proxy Upgrade Hijack$1MMars Perps 14 · Funding Rate Arbitrage$960K0G Foundation 11 · Withdrawal Logic Flaw$516K
How attackers got in
Smart contract bug 13$20.1M
Keys, accounts and infrastructure 4$12.7M
Price, oracle and governance 3$1.4M
Other 2$1.2M
By chain
Ethereum 9$25.3M
Bitcoin 1$8.5M
Solana 1$8.5M
Story 1$3.9M
Flow 1$3.9M
Neutron 1$960K
0G 1$516K
BNB Chain 2$380K
By target
DeFi protocol 13$21.5M
Wallet 1$8.5M
Layer 1 1$3.9M
not stated 5$1.4M
Centralized exchange 2$0
Cite this page
SwanBluechip, "Crypto hacks and thefts, December 2025", Crypto hack history, https://swan-hack-tracker.pages.dev/history/m/2025-12/ (data as of 2026-10-31).