Hack history / Monthly reports / 2021-07
Crypto hacks and thefts, July 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
$48.8M
31 thefts
vs the month before
−64%
−64% ($137.4M)
vs a year earlier
+7%
+7% ($45.8M)
Largest thefts
Haven Protocol 03 · Infinite Mint$8.2MTHORChain DEX 22 · Withdrawal Logic Flaw$8MMultichain 10 · Weak Key Generation$7.9MBondly 15 · Phishing$5.9MTHORChain DEX 15 · Bridge Logic Flaw$5MChainSwap Bridge 10 · Bridge Logic Flaw$4.4MBunny 16 · Unbacked Mint$2.4MLevyathan 28 · Key Stored Publicly$1.5Mhelios 12 · Rug Pull$1.4MApeRocket 14 · Reward Logic Flaw$1.3M
How attackers got in
Smart contract bug 8$20.3M
Bridge and cross-chain 10$11M
Keys, accounts and infrastructure 3$9.4M
Phishing and scams 2$6M
Insiders: rug pulls, frauds, collapses 2$1.4M
Price, oracle and governance 2$496K
Other 4$131K
By chain
Ethereum 12$32.7M
BNB Chain 8$18.4M
Haven 1$8.2M
Fantom 1$7.9M
Polkadot 4$6.4M
Polygon 4$4.1M
not stated 7$407K
Huobi Eco Chain 1$176K
By target
DeFi protocol 12$38M
Centralized exchange 1$7.9M
not stated 17$2.8M
Bridge 1$76K
Collapses and frauds, counted apart
3 cases, $97.3M.
Cite this page
SwanBluechip, "Crypto hacks and thefts, July 2021", Crypto hack history, https://swan-hack-tracker.pages.dev/history/m/2021-07/ (data as of 2026-10-31).