> These challenges required that, for free customers, we limit Universal SSL support to modern browsers. Modern browsers include support for ECDSA, where many l

> These challenges required that, for free customers, we limit Universal SSL support to modern browsers. Modern browsers include support for ECDSA, where many legacy browsers do not. I hope in the (near) future, they'll enforce not using unsafe NIST curves for that, too. I don't think Internet Explorer supports Curve25519 or other safer curves right now, but it might in the future, and I hope they will make their move then. Also, I hope Cloudflare has tripled its security team along with this, because they're going to be #1 on NSA's "to-break" list now.