Harmony had mistakenly minted 150 million ONE tokens in December last year due to a protocol vulnerability.

According to a report by Aaron Li, a participant in the Harmony ecosystem, on January 15th, BlockBeats News reported that in December of last year, due to a vulnerability in the staking contract, some staking users on Harmony received an additional 150 million ONE tokens, worth approximately $2.2 million. Aaron Li accused the Harmony team of not responding positively to the vulnerability within the five days of the report's release, causing the problem to continue to expand. Ultimately, Aaron Li decided to investigate the issue himself and found a temporary solution on December 12th. On the other hand, Harmony software engineer Casey Gardiner accused Aaron Li of "not reporting the vulnerability in a timely manner" and selling ONE tokens during the vulnerability period. (DL News)