Before revision:  In brief, we show : i) the presence of malicious and low credibility information sources shared on Twitter messages in multiple languages , ii) the malicious URLs, often in shortened forms, are increasingly hosted in content delivery networks and shared cloud hosting infrastructures not only to improve reach but also to avoid being detected and blocked , iii) potential signs of coordination to promote both malicious and low credibility URLs on Twitter.
After revision:  In brief, we show : i) the presence of malicious and low credibility information sources shared on Twitter messages in multiple languages , ii) the malicious URLs, often in shortened forms, are increasingly hosted in content delivery networks and shared cloud hosting infrastructures not only to improve reach but also to avoid being detected and blocked . There are potential signs of coordination to promote both malicious and low credibility URLs on Twitter.