By Johannes B. Ullrich, Ph.D. Jaff Ransomware Gets a Makeover
https://isc.sans.edu/forums/diary/Jaff+ransomware+gets+a+makeover/22446/
OpenVPN Access Server Vulnerability
http://seclists.org/oss-sec/2017/q2/332
Large Credential Dumps Used in Password Brute Forcing Attacks
http://info.digitalshadows.com/AccountTakeover-WhitePapersPage_Registration.html
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