shield Access Control

Postmortem: 88mph NFT Access Control, June 2021

On June 2021, 88mph NFT suffered a access control — the first of 77 documented access control incidents in our archive where the loss figure was not publicly disclosed but the exploit pattern is documented below.

Attack Mechanics: How the 88mph NFT Access Control Played Out

Exploit Class Applied to 88mph NFT

The 88mph NFT incident on June 7, 2021 is classified as a Access Control. A privileged function lacks a proper authorisation check, letting an unauthorised caller execute it. In the full archive, 88mph NFT is 1 of 77 documented access control incidents.

88mph NFT in Context

The 88mph NFT incident joins a class whose largest loss to date is Corkprotocol (2025) at $12M.

Prior Access Control Before 88mph NFT

The nearest access control incident before 88mph NFT was Bancor Protocol, 354 days earlier on June 18, 2020. The same exploit class surfaced again within the access control attack surface.

Impact & Recovery for 88mph NFT

88mph NFT Loss Figure

The loss figure for 88mph NFT is not publicly disclosed. The primary source reports the exploit in non-USD terms, so no USD estimate is published here. For reference, the average loss across 77 access control incidents in our archive is $636K.

Timeline Since the 88mph NFT Incident

The 88mph NFT exploit occurred 4.9 years ago (1,772 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.

Primary Reference for 88mph NFT

Public post-mortem / on-chain analysis for the 88mph NFT incident: view source.

FAQ

How much did 88mph NFT lose?

The 88mph NFT loss figure is not publicly disclosed. The primary source reports the exploit in non-USD token terms, so no USD estimate is published here.

When did the 88mph NFT hack happen?

The 88mph NFT exploit was recorded on June 7, 2021 — 1,772 days ago.

What type of exploit hit 88mph NFT?

The 88mph NFT incident is classified as a Access Control. A privileged function lacks a proper authorisation check, letting an unauthorised caller execute it.

How common is the Access Control pattern seen at 88mph NFT?

Our archive contains 77 documented access control incidents. The 88mph NFT incident is one of them.

How does 88mph NFT compare to the largest Access Control attack?

The largest access control incident in our archive is Corkprotocol (2025) at $12M. The 88mph NFT loss was not publicly disclosed.

How does the GARCH (1,1) model contribute to understanding cryptocurrency market dynamics?

The model provides insights into how trading volume, information demand, and other factors influence volatility, aiding in better market prediction and investment strategies.

What base cryptographic schemes are used for the proposed adaptor signature schemes?

The proposed schemes are based on the Schnorr and Dilithium signature schemes.