Hack history / 2021 / Hack or exploit
SharedStake
Hack or exploit on Jun 24, 2021 · Improper Access Control
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
$500K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,155
among thefts by dollars lost
What happened
An insider with access to a disclosed timelock vulnerability exploited it to bypass vesting contract protections and withdraw 500K SGT governance tokens. The vulnerability had been identified on April 26 and shared with the team, but the insider used this knowledge to drain locked tokens four times on June 19-23.
Details
- Date
- Jun 24, 2021
- Kind
- Hack or exploit
- Method
- Improper Access Control
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
Related incidents
SharedStake 2023 · Hack or exploit · $175K
Poly Network 2021 · Hack or exploit · $611M
Mirror 2021 · Hack or exploit · $90M
ValueDefi 2021 · Hack or exploit · $10M
DAO Maker Vesting 2021 · Hack or exploit · $7M
Poly Network 2021 · Hack or exploit · $611M
Mirror 2021 · Hack or exploit · $90M
ValueDefi 2021 · Hack or exploit · $10M
DAO Maker Vesting 2021 · Hack or exploit · $7M
Cite this page
SwanBluechip, "SharedStake hack, Jun 24, 2021: $500K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/hta691274538/ (data as of 2026-10-31).