TLS or Transport Layer Security is an encryption protocol. It is designed such that communication through TLS remains secure and private. In this post, I will explain what TLS handshake is and how to ...

Cloudflare announces today support for encrypted Server Name Indication, a mechanism that makes it more difficult to track user's browsing. A web server can host multiple websites, with all of them ...

OpenSSL 4.0.0 has been released, bringing profound changes to the widely used crypto library. The open-source project removes outdated protocols like SSLv2 and SSLv3, abolishes the Engine concept, ...

Part 6 of a six-part article: Just because you checked a few boxes on your Microsoft Exchange Server does not mean that there is secure TLS encryption between your domain and another SMTP server that ...

South Korea has been blocking HTTP websites that are on their censor list for a while now and they have recently started using SNI filtering to block their counterparts served over HTTPS. A warning ...

In the TLS/SSL handshake, the gateway sends an SNI message (for example, based on an SNI message originally sent by the client to the gateway), followed by additional handshake messages between the ...