SYN flood

SYN flood attack: variants and countermeasures

The attack pattern of a SYN flood attack has been known since the early years of the World Wide Web. Over time, new attack variants and appropriate protective measures have arisen. DDoS attacks with massive data flows originating from botnets are currently the norm. Learn how SYN flood attacks work. We will explain the concepts of these attacks and countermeasures.

Ping of death

Ping of death

The ping of death was a cause for alarm in the early days of the Internet: A malicious hacker could cause a remote system to crash with a simple ping command. Keep reading to find out how the attack works on a technical level and why you don’t have to worry about it today.

Shoulder surfing

Shoulder surfing – an underestimated threat?

Malicious hackers gain unauthorized access to sensitive data by identifying weaknesses in security mechanisms and exploiting them. However, technical skills are not always required to be able to steal data. This is the case for shoulder surfing which exploits the greatest weakness of every computer system and security measure – the human being.

What is DevSecOps?

What is DevSecOps and what are its uses?

DevSecOps is the optimal approach for achieving faster software development, without having to make any cutbacks to security. Security packages are directly integrated into the development process. We’ll explain its pros and cons and clarify the various possibilities for using the system.

Turning off the Windows firewall

How to turn off the Windows firewall

Among other things, Windows includes a built-in firewall that protects your device from attacks by hackers and unwanted network traffic. To ensure you can use the Internet safely, you shouldn’t turn off the firewall permanently. However, you may sometimes find you need to temporarily disable it, for example, to install software. Read on to find out how to do this.

TLS (Transport Layer Security)

TLS: How the Internet is encrypted

Internet security measures have become indispensable these days. Encryption is essential to ensure that unauthorized third parties do not gain access to data or are able to manipulate it. That’s what TLS or Transport Layer Security is for. Here’s what you need to know about this integral element of the modern Internet.

Open and restore a TMP file

Open or restore a TMP file: How it works

Temporary files with the extension are used by many different programs, including the operating system. If you come across cache files that are seemingly no longer used, you can open the respective TMP file to check its content. The following guide explains why there’s no standardized tool for this and how to open TMPs.

Intrusion detection systems and prevention systems

The intrusion detection and intrusion prevention systems at a glance

A stable network is characterized not only by the appropriate hardware structures, but also by a watertight security concept. In addition to back-up solutions and intelligent fail-safe systems, protection against external access attempts is a must. Intrusion detection systems (IDS) and intrusion protection systems (IPS) are an excellent addition to the classic firewall and are therefore a sensible...

Berkeley Packet Filter Explained

BPF – What is the Berkeley Packet Filter?

The Berkeley Packet Filter was developed in 1992 to filter, receive, and send data packets securely. The filter forms interfaces with security layers which are tasked with recognizing incoming corrupted data contents, for example. This allows them to be discarded or corrected right away. We explain how the BPF works.


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