I have been getting quite a few hits on my webservers for the resource /USH.HTML. I have never hosted this file, and do not know what it is. Is this a type of robots.txt file or something specific to a certain CMS?UPDATEI found out the answer, and it is a similar Japanese website that has a domain very similar to ours, but with a hyphen in the name instead. I guess all the 404s are due to a typo on the referring link.
What is USH.HTML and why do some robot try to access it?
robots.txt;logging;web crawlers
Is it definitely a bot? Do you have a user-agent? And is there a referer [sic] header for those requests?A Google search doesn't bring up anything remotely significant so I don't think it's related to robots.txt, nor anything like a bot polling for security flaws.It is likely to be something simple like a mistyped link to your site - for example you have a page usb.html or rush.html, or perhaps a site with a similar domain name has the page ush.html.