Since Hacker News is the place for pendency, let me point out that the oracle here worked 100% correctly, and correctly reported the actual value of yUSD. yUSD

Since Hacker News is the place for pendency, let me point out that the oracle here worked 100% correctly, and correctly reported the actual value of yUSD. yUSD's value did actually double during the attacker, because the attacker gave yUSD holders millions of dollars as part of the attack.