This appeared to fix the problem, but it has arisen again. I may have a JavaScript problem on the website as well that I am looking into (post sharing buttons not working as expected):
[403 GET Request: December 12, 2015 - 1:25 pm] Event Code: PFWR-PSBR-HPR Solution: http://forum.ait-pro.com/forums/topic/security-log-event-codes/ REMOTE_ADDR: MY IP Host Name: INTERNET PROVIDER SERVER_PROTOCOL: HTTP/1.0 HTTP_CLIENT_IP: HTTP_FORWARDED: HTTP_X_FORWARDED_FOR: HTTP_X_CLUSTER_CLIENT_IP: REQUEST_METHOD: GET HTTP_REFERER: https://example.com/ REQUEST_URI: /wp-content/plugins/js_composer/assets/js/dist/js_composer_front.min.js?ver=4.9 QUERY_STRING: HTTP_USER_AGENT: My Computer