Knowledge base

Explanations of terms and information from the world of IT security

Our knowledge database provides you with valuable information on various topics in the field of IT security. Learn which dangers exist and how you can specifically counter these threats to ward off CEO fraud, ransomware, phishing and the like. In addition, you’ll find an overview of relevant terms in the field of information security.

IT Security

Whenever a organization communicates online and stores and transfers data and information, it must ensure its IT security. But what exactly is this?


The term malware is used to describe all kinds of malicious software. The focus here is on malware that is loaded onto the device in order to cause damage.


What is Emotet? And how can I protect myself from Emotet? Measures to protect against the most dangerous malware Emotet.

Brute-Force attacks

A brute-force attack is a trial-and-error method used to obtain information such as passwords or other access codes. Here, the attacker tries a variety of …

Computer Virus

What exactly is a computer virus? What are the chances of eliminating one? And what kind of protection is really effective against them?

Cryptolocker Ransomware

The cryptolocker ransomware was a polymorphic virus, which was used to encrypt computer systems. The only option affected …


Insidiously, as in the famous mythology, a Trojan horse attacks computers, steals data and damages the system.

DDoS Attack

The abbreviation DDoS stands for Distributed Denial Of Service. A DDoS attack is a type of DoS attack in which several hijacked systems are used to carry out an attack against the target system.

Ransomware Kill Chain (1)

Why is ransomware not a typical cyberattack? Normally, the data theft remains undetected. This is especially true when the systems …

Ransomware Kill Chain (2)

How to use the Ransomware Kill Chain model to devise countermeasures? The Ransomware Kill Chain using Wanna Cry as an example …


The word “ransomware” comes from the English language and contains the term “ransom”, which means “held hostage for money”…


Phishing is an electronically executed fraud attempt in which the recipient is sent a fake e-mail that he often does not recognize as such at first…

Crypto Mining

With the establishment of cryptocurrency, the era of a new means of payment has been ushered Crypto Mining in. To better understand the miners’ gold rush, we have summarized the most important facts on this page.

Social Engineering

Even with the best technical security precautions, every company has a risk factor that is difficult to control: the human one. To get hold of important data or gain access, a hacker needs to understand not only computers but also people. What exactly is social engineering and how can you protect yourself?

Computer Worm

A computer worm is a malicious program that reproduces itself as it spreads to as many computers as possible. This makes the it particularly dangerous for companies.

Cyber Kill Chain

To identify and combat attacks along the Cyber Kill Chain in time, you need to understand the strategies of the criminals …

Spear Phishing

Spear phishing is a cyber attack with extremely malicious intent that is derived from traditional phishing. In a conventional phishing attack, the target persons fall randomly into the attacker’s grid.


GoBD are the Principles for properly maintaining, keeping and storing books, records and documents in electronic form and for data access, as provided …

The most important IT news. Read our latest blog posts

Emotet in encrypted attachments – A growing cyber threat

Emotet in encrypted attachments – A growing cyber threat

The cybercriminals behind the banking Trojan Emotet are working hard to circumvent anti-virus filters with various tricks and spread the malware on many more systems. From email conversation thread hijacking, through changes of the web shells, to updating the Emotet-loader, which led to a huge increase in malware downloads. Now Emotet is again sending encrypted attachments via its malspam to further expand its botnet network…
Email Conversation Thread Hijacking

Email Conversation Thread Hijacking

You should only open email attachments and links from senders you know is an advice often given when it comes to preventing email-based malware and phishing attacks. However, in this article we outline an attack technique called email conversation thread hijacking, which uses victim’s existing email conversations and thus trust-relationships to spread to new victims. Against this attack the previous advice will not help. We explain how email conversation thread hijacking is used by attackers, and why it dramatically increases the likelihood for victims to open malicious links or malicious attachments.
Hornetsecurity announces new partnership with Infinigate UK

Hornetsecurity announces new partnership with Infinigate UK

Hornetsecurity, the leading German email cloud security provider in Europe has signed an agreement with Infinigate UK, the CRN UK Security Distributor of the Year 2019. As one of the fastest growing German tech companies, Hornetsecurity makes with this new partnership another important step to become market leader in UK and Ireland. The ambitious plan is to achieve this within the next 12 months…