Using Facebook as a CDN

A malware group is using Facebook's CDN servers to store malicious files that it later uses to infect users with banking trojans.

Researchers spotted several campaigns using Facebook's CDN servers in the last two weeks, and previously, the same group also used Dropbox and Google's cloud storage services to store the same malicious payloads.

Just a matter of time before OneDrive is used as CDN, as in my 2015 post on this predicted.

From https://www.bleepingcomputer.com/news/security/malware-group-uses-facebook-cdn-to-bypass-security-solutions/

Using Dropbox as a CDN 
https://researchcenter.paloaltonetworks.com/2017/07/unit42-malspam-targeting-brazil-continues-evolve/