Hack history / 2026 / Hack or exploit
SQTokenStaking
Hack or exploit on May 12, 2026 · Improper Access Control
ATTACK TX CONFIRMED ON CHAINSOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$346K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,266
among thefts by dollars lost
What happened
SQ Protocol was exploited when an attacker used EIP-7702 authorized transactions to call privileged staking functions via a hardcoded owner backdoor, minting fake positions and draining USDT.
Details
- Date
- May 12, 2026
- Kind
- Hack or exploit
- Method
- Improper Access Control
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- BNB Chain
Reported by
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Cite this page
SwanBluechip, "SQTokenStaking hack, May 12, 2026: $346K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht882aa47596/ (data as of 2026-11-01).