Hi Michael, Michael Richardson wrote: > RC4 is supported by 83% of end points that support crypto, or of 83% of > end points that answer TCP? This percentage is based on hosts that did complete a SSL/TLS handshake. > I didn't see the total number of hosts scanned in the slides. The number fluctuates from scan to scan (also our blacklist grows slowly, but surely -- admins that wish their host or range to be excluded). For the RC4 specific results: Supports RC4 | Does not Support RC4 |Total SMTPS 2346023 505575 2851598 SMTP 1343406 213882 1557288 IMAPS 3373919 673466 4047385 IMAP 654987 109224 764211 POP3S 3303738 641314 3945052 POP3 3035752 473240 3508992 Our initial scans were based on Hosts collected by UMichigan (dataset: 3d2hbz9r9kh2fbrk-zgrab-results-25-smtp-starttls-full_ipv4-20150413T040703.json) - We've since gone on to do our own IPv4 wide discovery scans (which also include banners and X.509 data). Aaron
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