Hack history / Monthly reports / 2021-10
Crypto hacks and thefts, October 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
$530.7M
30 thefts
vs the month before
+139%
+139% ($222.1M)
vs a year earlier
11×
11× ($49.3M)
Largest thefts
BXH 30 · Private Key Compromised$139MCREAM Lending 27 · Spot Price Manipulation$130MMirror 08 · Improper Access Control$90MCompound 04 · Contract Vulnerability$68.8MAnubisDAO 29 · Admin Drain$60MIndexed Finance 14 · Spot Price Manipulation$16MSaturnbeam 24 · Rug Pull$12MRapper Tekashi 6ix9ine releases a series of NFTs, only for the project not to deliver anything it promised 28 · Rug pull$4MEvolved Apes 06 · Rug Pull$2.7MBaller Ape Club NFT developers rug pull for $2.6 million 01 · Rug pull$2.6M
How attackers got in
Smart contract bug 8$159.7M
Price, oracle and governance 6$146.2M
Keys, accounts and infrastructure 2$139M
Insiders: rug pulls, frauds, collapses 10$82.5M
Bridge and cross-chain 1$2M
Phishing and scams 1$1M
Other 2$350K
By chain
Ethereum 9$279M
BNB Chain 5$139.6M
Terra 1$90M
not stated 7$12.3M
Solana 4$7.1M
Polygon 1$2M
wax 1$376K
Elastos 1$300K
By target
DeFi protocol 8$436M
not stated 21$94.7M
Centralized exchange 1$0
Collapses and frauds, counted apart
3 cases, $1.4M.
Cite this page
SwanBluechip, "Crypto hacks and thefts, October 2021", Crypto hack history, https://swan-hack-tracker.pages.dev/history/m/2021-10/ (data as of 2026-10-31).