Is it not possible.
You can delete the cache from your server, but the data will still be available in Sucuri’s server for security reasons. If a malicious user gets access to your API key and requests the deletion of the logs to hide their fingerprints after attacking your website, you (as the administrator), will have no way to know what happened because the logs do not exist anymore.
While I understand that many of the events reported in the logs may not be of everyone’s interest, the other option (deleting older logs after some time) is even worst. I would suggest to implement an “archive” function to hide older logs, but this may not be something of high priority, so I don’t see it implemented any time soon.
