1. Arbor Networks. Worldwide infrastructure security report Sept. 2012. Volume VIII. Arbor Networks. Worldwide infrastructure security report Sept. 2012. Volume VIII.
2. Arbor Networks. Worldwide infrastructure security report Jan. 2014. Volume IX. Arbor Networks. Worldwide infrastructure security report Jan. 2014. Volume IX.
3. Arbor Networks. Rio Olympics Take the Gold for 540gb/sec Sustained DDoS Attacks! https://www.arbornetworks.com/blog/asert/rio-olympics-take-gold-540gbsec-sustained-ddos-attacks/ Aug. 2016. Arbor Networks. Rio Olympics Take the Gold for 540gb/sec Sustained DDoS Attacks! https://www.arbornetworks.com/blog/asert/rio-olympics-take-gold-540gbsec-sustained-ddos-attacks/ Aug. 2016.
4. B-Root Operators. Personal communication Dec. 2015. B-Root Operators. Personal communication Dec. 2015.