Cloudfront.net Firefox Immunization

[Dalehan]

cloudfront.net is currently listed in the immunization database for Firefox, a website that's also being used by the website for Riot's League of Legends, for instance.
As a result, the entire background graphic of the website is left invisible/black.

Is cloudfront.net actually harmful, or can this be considered a false positive?

[Dalehan]

Oh right, forgot the info:

Operating System : Windows 7 Home Premium 64 bit
Browser and Version : Firefox 7.0.1
Version of Spybot S&D and Date of the latest update: 1.6.2.0, latest update 21-10-2011
where did the false positive occur: after Firefox immunization
not reachable/restricted website:
http://di9vymcrcwnbk.cloudfront.net/website/DominionBG. jpg on http://euw.leagueoflegends.com/

[Yodama]

Thank you for reporting this issue.
A subdomain from cloudfront.net is being used to host malware but that does not concern the main domain. The detection will be adjusted with the next detection update scheduled for Wednesday 2011-10-26.