shield Reentrancy · $3M loss

NFTTrader Hack: How $3M Was Lost in a Reentrancy (2023)

On December 2023, NFTTrader was exploited in a reentrancy, resulting in approximately $3M in losses. That makes the NFTTrader exploit the 56th largest DeFi incident out of 690 documented in our archive.

Attack Mechanics: How the NFTTrader Reentrancy Played Out

Exploit Class Applied to NFTTrader

The NFTTrader incident on December 16, 2023 is classified as a Reentrancy. A malicious contract re-enters a vulnerable function before state is updated, letting it drain funds multiple times. In the full archive, NFTTrader is 1 of 51 documented reentrancy incidents.

NFTTrader in Context

At $3M, the NFTTrader exploit is a significant ($1M–$10M) event compared to the largest same-class incident in our archive — Curve (2023) at $41M.

Prior Reentrancy Before NFTTrader

The nearest reentrancy incident before NFTTrader was StarsArena, 70 days earlier on October 7, 2023 ($3M lost). The same exploit class surfaced again within the reentrancy attack surface.

Impact & Recovery for NFTTrader

NFTTrader Loss Figure

The NFTTrader exploit caused $3,000,000 in losses — a significant ($1M–$10M) incident and the 19th largest of 214 documented in 2023. This single incident represents 0.5% of all tracked losses that year.

Where NFTTrader Sits Among Reentrancy Attacks

Ranked by loss size, NFTTrader is the 6th largest of 51 reentrancy incidents documented. That puts the NFTTrader loss above the class average of $2.87M.

Timeline Since the NFTTrader Incident

The NFTTrader exploit occurred 2.3 years ago (850 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.

Primary Reference for NFTTrader

Public post-mortem / on-chain analysis for the NFTTrader incident: view source.

FAQ

How much did NFTTrader lose?

The NFTTrader exploit in December 2023 resulted in $3,000,000 in losses — the 19th largest of 214 DeFi incidents that year.

When did the NFTTrader hack happen?

The NFTTrader exploit was recorded on December 16, 2023 — 850 days ago.

What type of exploit hit NFTTrader?

The NFTTrader incident is classified as a Reentrancy. A malicious contract re-enters a vulnerable function before state is updated, letting it drain funds multiple times.

How common is the Reentrancy pattern seen at NFTTrader?

Our archive contains 51 documented reentrancy incidents. The NFTTrader incident is one of them.

How does NFTTrader compare to the largest Reentrancy attack?

The largest reentrancy incident in our archive is Curve (2023) at $41M. The NFTTrader loss is $3M.

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