mysite.com 403 Forbidden Error Page

Bulletproof Security Version .51
I am working on a website which has fetch functionality (like pinterest.com’s add pin functionality) and
I am getting following error while fetching YouTube video:
mysite.com 403 Forbidden Error Page
If you arrived here due to a search or clicking on a link click your Browser’s back button to return to the previous page. Thank you.

[403 GET / HEAD Request: November 26, 2014 - 8:37 pm]
Event Code: BFHS - Blocked/Forbidden Hacker or Spammer
Solution: N/A - Hacker/Spammer Blocked/Forbidden
REMOTE_ADDR: xx.xx.xxx.xxx
Host Name: xx-xx-xxx-xxx.xxxxxxxxxx.xxxxxx.xxxxxxxxx.xxx
SERVER_PROTOCOL: HTTP/1.1
HTTP_CLIENT_IP:
HTTP_FORWARDED:
HTTP_X_FORWARDED_FOR:
HTTP_X_CLUSTER_CLIENT_IP:
REQUEST_METHOD: GET
HTTP_REFERER: http://mysite.com/itm-settings/
REQUEST_URI: /itm-settings/?m=bm&imgsrc=%3A%2F%2Fimg.youtube.com%2Fvi%2Fsr8eOeVWK1k%2F0.jpg&source=%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dsr8eOeVWK1k&title=Illustrator%20Tutorial%20-%20Flat%20Design%20Summer%20Wallpaper%20(Google%20Now)%20-%20YouTube&video=1
QUERY_STRING:
HTTP_USER_AGENT: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.65 Safari/537.36

https://wordpress.org/plugins/bulletproof-security/