Googleusercontent
googleusercontent
googleusercontent.com
Hackers have found a way to share malware via trusted and reliable Google servers like those of googleusercontent. googleusercontent is Google’s domain for serving user-supplied content without affecting the safety of Google’s own pages.
"bc.googleusercontent.com" is Google computing cloud.
bc.googleusercontent.com
bc originates from Google Compute Engine (Google cloud) That does not have to be from Google itself. It is a service anyone can use.
You also need to take into account the 1st bit of that:
bc.googleusercontent.com
bc originates from Google Compute Engine (Google cloud) That does not have to be from Google itself. It is a service anyone can use.
Some other services that are from Google:
lh3.googleusercontent.com Used for loading images for Google+. lh5.googleusercontent.com Used for loading images for Google+. lh6.googleusercontent.com Used for loading images for Google+. s3.googleusercontent.com Used for loading favicons for AdWords ads. static.googleusercontent.com themes.googleusercontent.com Used for loading font files for Google Fonts. (Generally called within CSS from fonts.googleapis.com) translate.googleusercontent.com Google Translation Service