PostgreSQL: a closer look at the object-relational database management system

The PostgreSQL database management system, also known to many as Postgres, has many decades of development behind it. It originally started as a project at Berkeley University in California. Today, the open source database continues to defy solutions from commercial competitors, since the development team is constantly working on its functionality and performance. But what exactly is PostgreSQL?...

Comparing the best online backup services

Many people use several devices and have data stored on them. What should you do if your data carrier fails or the data gets lost? Backing up data is extremely important and an online backup makes perfect sense. By doing this, you don’t risk losing your important files due to a system crash or criminal activitiy. What is the best option? Here is a comparison of online backup service providers.

Keyloggers: how do they work and how do you protect yourself from them?

Keyloggers are programs or devices that get access to your credentials by recording your keystrokes. Keyloggers hide in operating system software and leak data. Some keylogger hardware is even more sophisticated, since it can document your keyboard behaviour or tap directly into the data stream. Learn how keyloggers work and which variants are available in our guide. We also give you tips on how...

Raspberry Pi and Plex: how to turn a single-board computer into a media server

Plex is among the most popular and user-friendly solutions for creating a media server in your home network. In contrast to many other applications, which are often Windows-only, the Plex server is compatible with Linux, Mac, and even single-board computers like the Raspberry Pi. In this Raspberry Pi and Plex tutorial, you will learn what technical requirements must be fulfilled and how...

Cloud computing – what’s behind it?

Cloud computing is not just an IT industry buzzword, it’s a model that many companies already employ effectively and profitably into their organisations. A large portion of IT infrastructure is no longer managed on-site. Instead, the required services can be rented via a service on the internet. Here we provide a cloud computing definition and explain exactly how it works.

Explore the possibilities with these 17 Raspberry Pi projects

Raspberry Pi is an inexpensive small form factor PC that can behave like a standard computer in many respects. Users can use this innovative mini-computer for all kinds of functions, from setting up an operating system to surfing the web, to using it as a server or a media center, and much more besides. Discover 10 interesting Raspberry Pi projects to try out at home.

What is SSH? The secure shell simply explained

If you want to establish a secure connection to your server via the internet, you will need SSH. Whether sending commands, uploading files, or during remote maintenance, secure shell ensures that criminals cannot gain access to your sensitive data. Effective encryption and correct authentication are essential for this. To help you understand what is behind the SSH protocol, we reveal how it works...

iTAN, mTAN, chipTAN? An overview of all TAN procedures

Security in online banking has always been a cornerstone of the industry – TAN procedures like chipTAN are what make it possible. However, there are also many other variants of this two-factor authentication system that can be used to protect your banking transactions. As they say, a chain is only as strong as its weakest link – and in this case, it’s the user. Find out which TAN procedures are...

Token ring – IEEE 802.5

A glance back into history can reveal a lot. Although token ring networks, or ring topologies, are nowhere to be found nowadays, token rings remain an interesting form of technology. Why the model, which is actually quite good, was outdone by its competitor Ethernet is due to the merciless nature of the tech market. Read the history behind token rings, along with a definition of the system that...

Clearing your RAM: our step-by-step guide

Computers simplify our working life and everyday life in many ways. However, if they do not run as usual, they can become more of a hindrance than a help. The various possible causes of performance problems include excessive memory usage, which plays an important role in managing active processes. One possible solution is to clear the RAM, and thereby increase your RAM.