Biggest movers since 2026-09

The 10 share measures that moved most, in percentage points of their own denominator. Population is the top 1M as of each run — churn is stated in the methodology.

no change since 2026-09HTTP/3 advertisement: 3.3; +3.3pp vs no change since 2026-09 (better); n=973441 HTTP/3 advertisement +3.3ppEncrypted Client Hello: 2; +2pp vs no change since 2026-09 (better); n=973441 Encrypted Client Hello +2ppHTTPS redirects: 2; +2pp vs no change since 2026-09 (better); n=1000000 HTTPS redirects +2ppCDN-fronted: 1.4; +1.4pp vs no change since 2026-09 (better); n=1000000 CDN-fronted +1.4ppPost-quantum key exchange: 1.3; +1.3pp vs no change since 2026-09 (better); n=973441 Post-quantum key exchange +1.3ppIPv6 DNS reachability: 1.3; +1.3pp vs no change since 2026-09 (better); n=1000000 IPv6 DNS reachability +1.3ppDeep-scan coverage: 0.7; +0.7pp vs no change since 2026-09 (better); n=974773 Deep-scan coverage +0.7ppHSTS adoption: 0.6; +0.6pp vs no change since 2026-09 (better); n=1000000 HSTS adoption +0.6ppBot-management challenge: 0.5; +0.5pp vs no change since 2026-09 (worse); n=1000000 Bot-management challenge +0.5ppBREACH prerequisite: −4; −4pp vs no change since 2026-09 (better); n=973441 BREACH prerequisite −4pp
Improved since 2026-09Worse since 2026-09

Denominators: each measure's own — n per measure in the table

View as table
MeasureChange since 2026-09Nown
BREACH prerequisite−4pp73.2%973,441
HTTP/3 advertisement+3.3pp45.2%973,441
Encrypted Client Hello+2pp23.8%973,441
HTTPS redirects+2pp78.6%1,000,000
CDN-fronted+1.4pp51.1%1,000,000
Post-quantum key exchange+1.3pp61.3%973,441
IPv6 DNS reachability+1.3pp40.7%1,000,000
Deep-scan coverage+0.7pp99.9%974,773
HSTS adoption+0.6pp34.4%1,000,000
Bot-management challenge+0.5pp9.8%1,000,000

Source: GeoTrust Research — The State of SSL/TLS, October 2026