Author Archives: Jindrich Zechmeister

The certificate detail in Chrome is back

The option to display the detail of the SSL/TLS certificate on a website had been incomprehensibly removed by Google Chrome. Version 60 will bring an improvement, but in order to view the details, the feature needs to be activated first in the hidden browser settings. The certificate detail has returned For the previous version of… Read More »

How to encrypt Messenger conversations

The security level of online conversations has been increased once again – with a new feature for the world’s most popular communicator, the Facebook Messenger App. Now, all users can send secret messages and in this article we will show you how to use them. The messages are encrypted between the recipients and a deadline… Read More »

Why do you need an SSL certificate?

Whether you are an individual or a company, you should approach online security in the same way that you would approach physical security for your home or business. Not only does it make you feel safer but it also protects the people who visit your home, place of business, or website. It is important to… Read More »

A Big Comparison of free SSL certificates: Let’s Encrypt vs. Basic DV by Symantec

This article is going to compare the certificates Let’s Encrypt and Basic DV by Symantec, both of which are offered exclusively to ZONER software customers. Basic DV is initiated by Symantec, the world biggest certification authority. The certificate can be issued by 4 chosen webhosts, one of which is ZONER software (CZECHIA.COM & SSLmarket.co.uk). Each ZONER… Read More »

Logjam: How to Solve a Newly Discovered Vulnerability

From the discovery and description of Heartbleed vulnerability, more and more concepts of attacks on SSL/TLS protocol and related cryptography have been appearing regularly. This article focuses on the latest described vulnerability Logjam, which is related to weak keys in Diffie-Hellman key-exchange (further just DHE and DH). The Diffie-Hellman Key-Exchange Protocol The DH protocol is… Read More »