Hack history / 2026 / Hack or exploit
Tectonic
Hack or exploit on Aug 30, 2026 · Donation Attack
SOURCES AGREE ON DATE AND LOSS · 4 SOURCES
Lost
$120.4M
dollars at the time
Returned
$111.2M
92% of the loss, as a source states it
Rank
#48
among thefts by dollars lost
What happened
The attacker built a leveraged TONIC/tTONIC collateral position through 98 recursive operations, then transferred TONIC directly into the tTONIC contract twice without minting corresponding tTONIC, increasing the tTONIC exchange rate outside the normal deposit path. The attacker also increased TONIC’s market price, while Tectonic’s price feed relied on VVS Finance and Crypto.com Exchange pricing without smoothing or a circuit breaker. These effects compounded the collateral valuation, allowing the attacker to borrow and remove more than $120M of assets from Tectonic’s lending markets within roughly 11 minutes
Details
- Date
- Aug 30, 2026
- Kind
- Hack or exploit
- Method
- Donation Attack
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Cronos, Cosmos
After the theft
- Recovered or frozen
- $111.2M
“$120.4M taken, $9.2M after recovery or freezing” (Web3 Is Going Great)
Related incidents
Tectonic 2024 · Hack or exploit · undisclosed
Tectonic 2024 · Hack or exploit · $250K
Lazy Summer Protocol 2026 · Hack or exploit · $6M
Venus Core Pool 2026 · Hack or exploit · $3.7M
Curve LlamaLend 2026 · Hack or exploit · $240K
Tectonic 2024 · Hack or exploit · $250K
Lazy Summer Protocol 2026 · Hack or exploit · $6M
Venus Core Pool 2026 · Hack or exploit · $3.7M
Curve LlamaLend 2026 · Hack or exploit · $240K
Cite this page
SwanBluechip, "Tectonic hack, Aug 30, 2026: $120.4M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/hte945c045a3/ (data as of 2026-10-31).