Looking to see how we can block specific ads. Unfortunately, ads are not maintained directly on our site, and we simply embed the ad service. We'd likely need to reach out to them/report the malicious ads.
As for now - I would look into the Adblock extension for Chrome. There is one for Firefox too. URL is here: https://getadblock.com/
I know that it not the most definitive (or best) answer but it should help for the interim period as we look into it further.