Got a warning for my blog going over 100GB in bandwidth this month... which sounded incredibly unusual. My blog is text and a couple images and I haven't posted anything to it in ages... like how would that even be possible?
Turns out it's possible when you have crawlers going apeshit on your server. Am I even reading this right? 12,181 with 181 zeros at the end for 'Unknown robot'? This is actually bonkers.
Edit: As Thunraz points out below, there's a footnote that reads "Numbers after + are successful hits on 'robots.txt' files" and not scientific notation.
Edit 2: After doing more digging, the culprit is a post where I shared a few wallpapers for download. The bots have been downloading these wallpapers over and over, using 100GB of bandwidth usage in the first 12 days of November. That's when my account was suspended for exceeding bandwidth (it's an artificial limit I put on there awhile back and forgot about...) that's also why the 'last visit' for all the bots is November 12th.
I recently added Anubis and its validation rate is under 40%. In other words, 60% of the incoming requests are likely bots and are now getting blocked. Definitely recommend.
I was a single server with only me and 2 others or so, and then saw that I had thousands of requests per minutes at times! Absolutely nuts! My cloud bill was way higher. Adding anubis and it dropped down to just our requests, and bills dropped too. Very very strong proponent now.