Radiant Capital was hacked on October 16
This is their twitter announcement and a separate thread explaining how it happened.
People are still losing $ because they haven't revoked access
They usually receive USDC through bridging or swapping, which immediately gets stolen using that open approval by the hackers. This has happened to many people already.
We found many Pocket Universe users who still have open approvals to the hacked Radiant contract and have seen some lose $ due to it.