Hack history / 2021 / Hack or exploit
Gamma
Hack or exploit on Dec 21, 2021 · Arithmetic Error
IN REVIEWONE SOURCE · 1 SOURCE
Lost
$4.5M
dollars at the time
Returned
none listed
as the sources state it
Rank
#484
among thefts by dollars lost
What happened
Gamma Strategies (formerly Visor) was exploited for at least $4.5M via infinite mint vulnerability. Attacker minted unlimited tokens and converted to other assets; token migration announced two days later.
In review: possible duplicate within one source.
Details
- Date
- Dec 21, 2021
- Kind
- Hack or exploit
- Method
- Arithmetic Error
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
Related incidents
Gamma 2024 · Hack or exploit · $6.2M
Zircon Gamma 2023 · Hack or exploit · $350K
Gamma 2021 · Hack or exploit · $8.2M
Compound V2 2021 · Hack or exploit · $147M
Uranium Finance 2021 · Hack or exploit · $50M
Zircon Gamma 2023 · Hack or exploit · $350K
Gamma 2021 · Hack or exploit · $8.2M
Compound V2 2021 · Hack or exploit · $147M
Uranium Finance 2021 · Hack or exploit · $50M
Cite this page
SwanBluechip, "Gamma hack, Dec 21, 2021: $4.5M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht9adc90a783/ (data as of 2026-10-31).