I have an nginx server running an instance of and express/nodejs server.

I was going through the logs to see what was being requested, and I noticed a few normal attempts for common flaws in things like word press, but what has me concerned is: - - [17/Aug/2018:02:54:32 +0000] "GET / HTTP/1.1" 200 209 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" - - [17/Aug/2018:02:54:36 +0000] "GET /stylesheets/style.css HTTP/1.1" 200 111 "https://www.fullstackking.com/" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36" - - [17/Aug/2018:03:17:27 +0000] "\x09\x00\x8B\x00\xFE\x00\xFC\x00\xD9\x00\xD9\x00\xF3\x00z\x00j\x00\x17\x00\xFB\x00\x8B\x00\x8E\x00\xF3\x00\xF3\x00\xFE\x00\xEC\x00j\x00\xA7\x00\x8E\x00\x8B\x00H\x00\xEC\x00\xFB\x00z\x00H\x00\x8E\x00\xEC\x00\x8E\x00\xFB\x00\xF3\x00\xF3\x00\x8B\x00\xF3\x00\x8B\x00\xEC\x00\xC5\x00\xFE\x00\xA7\x00\xA7\x00\x09\x00\x09\x00\x09\x00\xA7\x00\xFE\x00j\x00\xC5\x00\xD9\x00\xFB\x00\xB0\x00\x8B\x00j\x00\xEC\x00\x17\x00\xFC\x00j\x00\x09\x00H\x00\xFC\x00\xB0\x00j\x00\x8E\x00\xF3\x00\x8E\x00\xA7\x00\xEC\x00\xFC\x00z\x00\x09\x00\xD9\x00\xF3\x00\xFB\x00\xB0\x00\x8B\x00\xEC\x00\x8E\x00\x17\x00\xD9\x00\xC5\x00\x8B\x00\x8B\x00\xFB\x00\xB0\x00\xF3\x00\x8B\x00\x8E\x00\xD9\x00z\x00H\x00\xFB\x00\xFE\x00\x17\x00\xC5\x00\x8E\x00z\x00\xB0\x00\xA7\x00\xA7\x00\xFB\x00\xB0\x00\x8E\x00\xC5\x00\xB0\x00H\x00\x17\x00\xC5\x00\x8B\x00j\x00\x8E\x00\xEC\x00\xF3\x00\xFE\x00\xD9\x00\xF3\x00\xA7\x00j\x00\xEC\x00\xA7\x00\xB0\x00\x17\x00\xFC\x00H\x00H\x00\x09\x00\x09\x00\x09\x00H\x00\x8E\x00\xCE\x00" 400 182 "-" "-"

I included the first two to show what normal requests should look like, but the last request is from an IP in the US that has a rating of 100% abuse on this website:


What is it trying to do with that series of hex?


1 Answer 1


It looks like its someone scanning your server for vulnerabilities. Most likely a bot of some sort. I don't think it's something to worry about, because as @immibis commented, your server is doing exactly what it should do when it receives a request like this.

Public facing IPs are pretty consistently scanned for ways to get in, mostly by bots.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .