Hack history / Monthly reports / 2021-01
Crypto hacks and thefts, January 2021
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
$2.6M
10 thefts
vs the month before
−100%
−100% ($3.56B)
vs a year earlier
−85%
−85% ($17.5M)
Largest thefts
popcornswap 28 · Rug Pull$2MSaddle Finance 20 · Hack or exploit$275Krefi.finance 27 · Rug Pull$138KSushiSwap 27 · Swap Logic Flaw$104KSushi Badger Digg 25 · Swap Logic Flaw$104KBuyUCoin 25 · Information LeakageundisclosedFiro 20 · 51% attackundisclosedGretchen Whitmer 11 · RansomwareundisclosedTor 11 · Network AttackundisclosedZKS 06 · Malicious Code Injection Attackundisclosed
How attackers got in
Insiders: rug pulls, frauds, collapses 2$2.1M
Other 6$275K
Smart contract bug 2$208K
By chain
BNB Chain 1$2M
Ethereum 3$345K
Bitcoin 1$275K
not stated 4$0
zkSync Era 1$0
By target
not stated 7$2.4M
DeFi protocol 2$208K
Centralized exchange 1$0
Cite this page
SwanBluechip, "Crypto hacks and thefts, January 2021", Crypto hack history, https://swan-hack-tracker.pages.dev/history/m/2021-01/ (data as of 2026-10-31).