When it comes to digital certificates, the Subject Alternative Name (SAN) extension plays a crucial role in how modern systems authenticate and communicate securely. Although the Common Name (CN) field traditionally carried the hostname of a server, today it’s the SAN extension that browsers and applications actually pay attention to. In fact, industry standards have…
Category: dns
Transport Layer Security (TLS)
Transport Layer Security (TLS) is a cryptographic protocol that protects data when it is transferred between devices over a network. It is commonly used to secure web-based applications over the internet. Given the explosion in cloud services, mobile computing and IoT devices, the underlying technology to secure the data in transit has become of critical…
The rush towards public DNS
One result of the rush towards using large-scale public Domain Name Service (DNS) resolvers, such as Google and Cloudflare, is that critical and sensitive DNS queries are often handled by servers in different countries or even continents. This trend is introducing unexpected security, resilience, legal and data protection issues for policy makers and governments. With…
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