Post-mortem published within 30 days
Usual (USD0 / bUSD0 / USUAL)'s assessment for RD-F-082 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
Usual published 'Sky Vault Arbitrage Recap: Contained and Controlled' approximately May 28–29, 2025 — approximately 1–2 days after the May 27, 2025 exploit. This is well within the 30-day post-mortem threshold. The post-mortem is public and addresses the incident timeline, root cause (in general terms), and action plan including router redeployment and technical audit diff publication. Previously not_applicable (zero SC exploits); rescored green on May 2025 exploit.
Sources #
- URLUsual Blog — Sky Vault Arbitrage Recap: Contained and ControlledUsual official post-mortem published ~1-2 days after May 27, 2025 exploit — within 30-day thresholdretrieved 2026-05-17
Methodology #
Determine whether a public post-mortem was published within 30 days of the most recent incident.
See the full factor methodology and distribution across all protocols →