shield Other · $742.3K loss

YYDS Unclassified Exploit postmortem (September 2022) — $742.3K drained

On September 2022, YYDS was exploited in a other, resulting in approximately $742.3K in losses. That makes the YYDS exploit the 102nd largest DeFi incident out of 690 documented in our archive.

Attack Mechanics: How the YYDS Other Played Out

Exploit Class Applied to YYDS

The YYDS incident on September 8, 2022 is classified as a Other. A specific exploit class outside the most common buckets. In the full archive, YYDS is 1 of 188 documented other incidents.

YYDS in Context

At $742.3K, the YYDS exploit is a minor (<$1M) event compared to the largest same-class incident in our archive — MIMSpell (2024) at $65M.

Prior Other Before YYDS

The nearest other incident before YYDS was DDC, 11 days earlier on August 28, 2022. The same exploit class surfaced again within the other attack surface.

YYDS Vulnerability Signature

The primary source categorises the YYDS exploit specifically as “pair manipulate”. This narrower label is entity-specific: it reflects how the YYDS contract failed, rather than the broad other pattern alone.

Impact & Recovery for YYDS

YYDS Loss Figure

The YYDS exploit caused $742,286 in losses — a minor (<$1M) incident and the 12th largest of 129 documented in 2022. This single incident represents 0.3% of all tracked losses that year.

Where YYDS Sits Among Other Attacks

Ranked by loss size, YYDS is the 20th largest of 188 other incidents documented. That puts the YYDS loss below the class average of $2.03M.

Timeline Since the YYDS Incident

The YYDS exploit occurred 3.6 years ago (1,314 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.

Primary Reference for YYDS

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

FAQ

How much did YYDS lose?

The YYDS exploit in September 2022 resulted in $742,286 in losses — the 12th largest of 129 DeFi incidents that year.

When did the YYDS hack happen?

The YYDS exploit was recorded on September 8, 2022 — 1,314 days ago.

What type of exploit hit YYDS?

The YYDS incident is classified as a Other. A specific exploit class outside the most common buckets.

How common is the Other pattern seen at YYDS?

Our archive contains 188 documented other incidents. The YYDS incident is one of them.

How does YYDS compare to the largest Other attack?

The largest other incident in our archive is MIMSpell (2024) at $65M. The YYDS loss is $742.3K.

Explain how data is transmitted securely in the proposed system.

Data is encrypted before transmission and stored on the blockchain, ensuring secure, verifiable data exchange.

What statistical method was applied to estimate the best fitting distributions?

Maximum likelihood estimation was used to fit various parametric distributions to the data.