test.polar.onl

Framebusting prevention
<iframe Same-origin Same-site Cross-site
<iframe sandbox="" Same-origin Same-site Cross-site
<iframe sandbox="allow-top-navigation" Same-origin Same-site Cross-site
<iframe sandbox="allow-top-navigation-by-user-activation" Same-origin Same-site Cross-site
<iframe (without automatic top navigation) Same-origin Same-site Cross-site
<iframe sandbox="allow-top-navigation"><iframe Same-origin Same-site Cross-site
open() Same-origin Same-site Cross-site
<iframe & open() Same-origin Same-site Cross-site
HTTPS-Only / HTTPS-First / HTTPS Upgrades