Protocol 47 (GRE) Traffic
https://isc.sans.edu/forums/diary/Increase+in+Protocol+47+denys/21865/
US Cert Releases "Grizzly Steppe" Report
https://www.us-cert.gov/security-publications/GRIZZLY-STEPPE-Russian-Malicious-Cyber-Activity
Android Malware Changes Router DNS Settings
https://securelist.com/blog/mobile/76969/switcher-android-joins-the-attack-the-router-club/
