There is this line in my nginx access.log:
54.201.239.190 - - [18/Dec/2022:22:34:56 +0100] "GET / HTTP/1.1" 200 64
"http://example.com/favicon.ico" "Mozilla/5.0 (X11; Linux x86_64) ..."
Simple question: Can anybody think of a way that a "favicon.ico" can appear in the referer of a legitimate get request???
(the IP is from AWS, so it should be a script. My guess is that this is a test to check if my site responds differently when a referer is set. There are 2 more log entries from AWS IPs right before this one without a referer)