1. 2017. Facebook Election 2106 Update. https://about.fb.com/news/2017/09/information-operations-update/ 2017. Facebook Election 2106 Update. https://about.fb.com/news/2017/09/information-operations-update/
2. 2018. How Twitter is fighting spam and malicious automation. https://blog.twitter.com/official/en_us/topics/company/2018/how-twitter-is-fighting-spam-and-malicious-automation.html 2018. How Twitter is fighting spam and malicious automation. https://blog.twitter.com/official/en_us/topics/company/2018/how-twitter-is-fighting-spam-and-malicious-automation.html
3. 2018. Twitter Election 2016 Update. https://blog.twitter.com/en_us/topics/company/2018/2016-election-update.html 2018. Twitter Election 2016 Update. https://blog.twitter.com/en_us/topics/company/2018/2016-election-update.html
4. 2018. Twitter is sweeping out accounts like never before.https://www.washingtonpost.com/technology/2018/07/06/twitter-is-sweeping-out-fake-accounts-like-never-before-putting-user-growth-risk/ 2018. Twitter is sweeping out accounts like never before.https://www.washingtonpost.com/technology/2018/07/06/twitter-is-sweeping-out-fake-accounts-like-never-before-putting-user-growth-risk/
5. 2019. Mueller report. https://www.justice.gov/storage/report.pdf 2019. Mueller report. https://www.justice.gov/storage/report.pdf