From secure websites and encrypted emails to digital signatures – every trusted digital identity relies on a Certificate Authority. Acting as the backbone of online trust, CAs verify, confirm, and safeguard identities across the internet, making them essential for secure communication in business, government, and everyday digital life.

What is a public key infrastructure (PKI)? The basis of SSL certificates, digital signatures and more – for digital security and efficiency within companies

The security protocol "Transport Layer Security" (TLS) for encrypting and authenticating communication with web servers has been revised repeatedly over the last thirty years. The current version is 1.3 - we explain why it is worth upgrading to this new standard.

Why SwissSign-S/MIME certificates will change from June 2025 - and what you should do now.

An SSL certificate is a must for a professional online presence. But which validation level should you choose: domain validation (DV), organisation validation (OV) or extended validation (EV)?

While SSL/TLS can be viewed as encrypting the transport route, S/MIME certificates ensure that the message contents are protected. How does this work?