Categories
Pages
-

IT Center Blog

Kategorie: ‘IT-Security’

What Is Typosquatting?

June 18th, 2025 | by
Businessman hand touching to search icon bar

Source: Freepik

The internet offers many opportunities – but also risks. One of the lesser known but potentially very dangerous threats in the field of cyber security is typosquatting. But what does this term actually mean? Typosquatting refers to a technique in which attackers attempt to redirect users to fake or unwanted websites. This is usually done by exploiting typos or similar domain names of well-known websites. Instead of the actual website, you end up on a page that looks deceptively similar to the real one or contains completely different, sometimes malicious content.

Read the rest of this entry »

How to Set up a Secure Home Network

May 14th, 2025 | by
Illustration of a laptop displaying a login screen, surrounded by icons for internet, Wi-Fi, data sharing, media, and a security shield with a padlock.

Source: Freepik

More and more devices in our everyday lives are connected to the internet – from home offices and online banking to smart thermostats and surveillance cameras. And all these digital helpers access a common system: the home network. It forms the heart of our digital infrastructure at home. In this article, we explain what a home network is, what risks it poses, and how you can effectively protect it from attacks.

 

Read the rest of this entry »

DNS at RWTH Aachen University Part 1:
History & Function of the DNS

May 5th, 2025 | by
A globe with location markers connected by lines, next to it a laptop with a security lock symbol on the screen, in the background a cityscape with a WLAN symbol and flying paper airplanes.

Source: Freepik

The Domain Name System (DNS) makes the Internet usable by translating readable names such as rwth-aachen.de into IP addresses. It originated from simple lists of names and developed into a globally distributed, hierarchical system. Today, it fulfils many more tasks – for example in the areas of e-mail, IT security and network management. The DNS also plays a central role at RWTH Aachen University and is protected by modern technologies such as DNS firewalls. This article provides an overview of the origin, structure and current significance of the DNS.

 

Read the rest of this entry »

Basics at RWTH: Using the VPN

April 28th, 2025 | by

Source: Own Illustration

At RWTH Aachen University, the Virtual Private Network (VPN) provides an important and secure connection to the university network. This connection is secured by encryption protocols such as TLS. VPN ensures that all data traffic – either to the RWTH network or, depending on the configuration, also to the Internet – is routed via a so-called “tunnel”. This tunnel protects the data on its way between your end device and the VPN server, where it is then integrated into the RWTH network. In the “Full Tunnel”, for example, requests from your device for external services appear with an IP address of RWTH Aachen University. In this article, we explain how you can set up and use the RWTH VPN service.

Read the rest of this entry »

New Certification Authority: From Sectigo to Harica

April 4th, 2025 | by
Clipboard with paper on which several boxes are ticked off

Source: Own illustration

The time has come! Since April 1, 2025, user certificates (S/MIME) can again be requested in the RA-Portal. After our previous certificate provider, Sectigo, terminated its contract on January 10, 2025, we now have a new provider. The German Research Network (DFN) and GÉANT have contracted a new provider for public-key certificates. The choice fell on the Greek trusted provider HARICA (Hellenic Academic & Research Institutions Certification Authority). HARICA is a certification authority of the Greek university network GUnet, is specially optimized for research institutions and meets the highest security standards.

 

Read the rest of this entry »

Effective Backup Strategies: Correct Data Backup

March 31st, 2025 | by

Source: Freepik

Backing up important professional or private files, such as texts, images and other documents, is essential. Data loss can have catastrophic consequences, whether caused by technical mishaps, accidental deletion or even hardware theft. Data loss can also be caused by viruses or hacker attacks. Viruses can, for example, encrypt the hard drive and then demand a ransom. Here are some proven strategies and tools to ensure that your data always remains safe and accessible. You can also take a look at the category IT-Security on our website to find out more tips.

Read the rest of this entry »

IT Security When Traveling

March 28th, 2025 | by
Young man sitting on two suitcases, viewing travel destinations on his laptop

Source: Freepik

Those who frequently use public transportation are often reminded to take care of their personal belongings. The material damage caused by theft or loss is obvious. The dangers of data theft are perhaps less apparent but have equally serious consequences. These consequences include identity theft, unauthorized access to financial data and potential damage to your personal and professional reputation.

With the right IT security tips, you can reliably protect your data on the move and travel with peace of mind. In this blog post, you can find out how to protect your data effectively – whilst enjoying every trip in peace.

 

Read the rest of this entry »

The ITSSM Department in Focus: IT Services & IT Security

March 24th, 2025 | by
View of the building at Seffenterweg 23

Source: Alexander Müller

The IT Service & Security Management (ITSSM) department plays a key role in the establishment, control and further development of IT service management processes and security processes in the IT center. The processes support service provision, service operations, IT security, reporting and support. In the following blog post, we take a closer look at the department’s areas of work.

Read the rest of this entry »

Blockchain Technology

March 19th, 2025 | by
Blockchain background with isometrical forms

Source: Freepik

Blockchain technology, often referred to simply as ‘blockchain’, is transforming the way data is stored and secured. Originally developed as the basis for cryptocurrencies such as Bitcoin, it has quickly developed into a versatile technology that is used in numerous industries.

In this blog post, you can find out how it all works and what applications there are in general.

 

Read the rest of this entry »

Digital Cleanup Day 2025

March 12th, 2025 | by
Graphic of a hand wiping over an orange background with the words Digital Cleanup Day

Source: Own illustration

The temperatures are rising and the first flowers are sprouting from the ground. That can only mean one thing: spring is here. And that means it’s time for the annual spring cleaning. But don’t just clean and declutter your home, do the same for your digital devices. Digital Cleanup Day on March 15 is a reminder to do a digital spring cleaning too.

 

 

Read the rest of this entry »