So far I found they accessed my S3 buckets, used my OpenAI key (which OpenAI thankfully detected odd behaviour and revoked the key automatically), did readonly operations on my Valkey instance, etc.

What were they trying to do with OpenAI tokens? What actual requests were they making?

Was it just to create damage? i.e. create unnecessary spend to cause trouble? Or were they trying to use the LLMs for a specific reason?

The secret ones