Analytics highlighting possible site security issue?

[Asia_Expat]

I hope I'm not breaking the forum rules by posting the following link. I have no connection with the website, other than they're sending suspicious traffic to my server...

ad.globalismedia.com

... has been showing up in my analytics logs and the landing page for the traffic is...

/doubleclick/DARTIframe

I've checked my server and no such directory or file exists as far as I can see. Is this something I should be very concerned about? Why would that site be attempting to resolve that non-existent directory?

[unilytics]

It looks like someone has incorrectly setup their tags and somehow referenced your site. The other possibility is that they are doing that on purpose to gain you attention. (You might want to try contacting the source, if that fails to correct the problem, you may want to setup a password protected directory on your site matching the folder name of the iframe. (This will get people's attention if the usage is simply an error.)