Monitoring
Dashboard/Crypto Hacks/Polygon
MEDIUMPolygon·Improper Access Control·#440 all-time

Polygon

$2.0M stolenFriday, December 3, 2021 · 1718 days ago

Corpus updated 2026-08-17

Situation Summary

12/3/2021 — EXPLOIT DETECTED

$2.0M drained from Polygon on Polygon.

TECHNIQUE: IMPROPER ACCESS CONTROL

Social Reactions

@ZachXBT coverage

On-chain investigator · Often first to report

View on 𝕏 →

Community discussion

Live search for “Polygonhack” on 𝕏

View on 𝕏 →

DefiLlama incident data

Full database of DeFi hacks and exploits

View →

Related — Improper Access Control Exploits

Curve Finance MEV Bot
11/7/2023$2.0M
Gym Network
6/8/2022$2.1M
Gatecoin
5/14/2016$2.0M
Texture
7/9/2025$2.2M
Mintpal
7/13/2014$2.0M

Nearby in the record

Incidents recorded immediately before and after this one.

Badger DAO
12/2/2021$120.0M
Bitmart
12/4/2021$196.0M
MonoX
11/30/2021$31.4M
Pizza DeFi
12/5/2021$5.0M
Visor Finance
11/28/2021$976K
8ightDAO
12/8/2021$1.8M
← All incidents

Data: DefiLlama · Monitoring Room

Source: DefiLlama · 1221 recorded incidents · data as of 2026-08-17 01:04 UTC