SketchUcation uses BootrstrapCDN to serve the font icons used on the site. Using a CDN instead of loading the server with serving this font-file means less server-load and therefore faster page-load.
This is the first time I hear about using this CDN for an attack. As I see in the quoted article after the incident the operator of the CDN increased security, so the probability of such cases is reduced now.
However if members of the SketchUcation community feel more comfortable not using bootstrapcdn, we can serve those files from the SketchUcation server without any use of bootstrapcdn.
To find it out: Please vote thumb-up on this post if you would feel more comfortable if we served the files from the own server. Please vote thumb-down if you are satisfied with the current setup. If the overall result is 10 or more we'll get rid of bootstrapcdn at the SketchUcation site.