Monitoring
Dashboard/Crypto Hacks/Siren
MEDIUMPolygon·Reentrancy·#366 all-time

Siren

$3.5M stolenFriday, September 3, 2021 · 1833 days ago

Corpus updated 2026-09-10

Situation Summary

9/3/2021 — EXPLOIT DETECTED

$3.5M drained from Siren on Polygon.

TECHNIQUE: REENTRANCY

Social Reactions

@ZachXBT coverage

On-chain investigator · Often first to report

View on 𝕏 →

Community discussion

Live search for “Sirenhack” on 𝕏

View on 𝕏 →

DefiLlama incident data

Full database of DeFi hacks and exploits

View →

Related — Reentrancy Exploits

Pythia
9/2/2024$53K
Bacon Protocol
3/5/2022$1.0M
NFT Trader
12/16/2023$3.0M
DFX V2
11/10/2022$4.0M
Orion Pools
2/2/2023$3.0M

Nearby in the record

CREAM Lending
8/30/2021$18.8M
DAO Maker Vesting
9/4/2021$4.0M
Bilaxy
8/29/2021$21.7M
Zabu Finance
9/12/2021$3.2M
xToken
8/29/2021$4.5M
NowSwap
9/15/2021$1.1M
← All incidents

Source: DefiLlama · 1262 recorded incidents · data as of 2026-09-10 05:04 UTC