I got my GA account spammed, somehow google recognizes it as Guzzle client. However I tried to search through my access logs, for something resembling it, but did not find anything at all even containing word 'guzzle', but google somehow recognizes it, you can see it here:
Any ideas what this could be? And how I could recognize it? By the way, I am almost sure that it is indeed someone crawling the actual pages, as opposed to someone just sending hits directly to GA.