Read text 2 and answer question 18.

TEXT 2

Facebook has removed 652 fake accounts and pages with ties to Russia and Iran attempting to exert political influence in the US, UK, Middle East and Latin America. The accounts and pages were divided between four separate campaigns, three of which originated in Iran, of “coordinated inauthentic behaviour”, disclosed by the social network today. “Security is not something you ever fully solve,” said the Facebook CEO, Mark Zuckerberg, in a call with reporters on Tuesday. “We have to constantly keep improving to stay ahead.”

https://www.theguardian.com/technology/2018/aug/21/facebook-pages-accounts-removed-russia-iran .

Access on August 20th , 2018.