How I work
Read-only first, always. On a security engagement the first thing I produce is a factual picture of what exists, before anything is changed, because changing things destroys the evidence of what was wrong.
Then findings in priority order with the risk stated plainly, remediation proposed for approval, and the changes applied with backups and a written record.
If the honest answer is "this is not an attack, it is a search engine crawler and your real problem is elsewhere", that is what I will tell you, even though it is a less impressive answer.