Happens to practically every site running advertisements nowadays.  The sites selling the ad space don't have 100% control over the ads, sometimes ones with malicious code make it through.  That seems to be what happened in this case.  Eros tweeted that they're aware of the issue and are working to get it cleaned up.

Danger: Malware Ahead!
Google Chrome has blocked access to this page on www.escorts.xxx.
Content from d.opx.eros.com, a known malware distributor, has been inserted into this web page. Visiting this page now is very likely to infect your Mac with malware.
Malware is malicious software that causes things like identity theft, financial loss, and permanent file deletion. Learn more

I contacted our admin and they informed us of the EROS issue.
Their opinion was that the 3rd party had an issue in coding an it triggered responses from the better browser.s (enjoy using ie) but there was no reason to be alarmed. Hence, EROS took a hit on visitors during this episode.