I am wondering if Defender has any features to help alleviate 404 bot attacks? Specifically, over the last month I have noted on my multisite install with 100+ sub-domains that every sub-domain is getting 5K+ 404 requests per day that are looking for ridiculously formatted URLs. I have been creating server level redirects for the various patterns that I can identify to try to keep my server alive but I am at the point of throwing my hands up.
The IP addresses appear to be from Googlebot and Bingbot predominantly.
Thoughts or suggestions on how to alleviate this type of attack would be much appreciated.