Security

IP Spoofing: Fundamentals and counter-measures

IP Spoofing: Simple manipulation of data packets by attackers

Sending data over networks is one of the most important and highest utilized functions of the modern computer era. But the structure of the necessary TCP/IP connections makes it all too easy for criminals to intercept data packets along their way and either view or alter their contents. One of the most common methods of attack is IP spoofing, which allows DoS and DDoS attacks, among other things...

Social engineering – the security gap at ‘layer 8’

Social engineering: human vulnerability exploited

The most effective system break-ins often happen without a scene. Instead of disrupting central network devices with DDoS attacks or sneaking through onto operating systems with Trojan horse techniques, hackers increasingly try to exploit the human security gap. There are various such methods that fall within the broader category of social engineering: a technique that sees hackers gather publicly...

SCP Secure Copy

SCP (Secure Copy Protocol): What is SCP?

If you are looking to perform an especially secure file transfer between two computers (e.g. uploading data to a web server), there are several options available. One of these options is the Secure Copy Protocol (SCP) which provides authentication and encryption via SSH. In this article, you will learn what this protocol is and how the SCP transfer works.

DNS over TLS

DNS over TLS: an improved security concept

The Domain Name System has a big security flaw: requests and responses are traditionally sent unencrypted. This provides Internet criminals with an ideal point of attack. Again and again, users are being directed to websites that they actually have no desire to visit. DNS over TLS acts as a deterrent. How does the security concept work?

HSTS: Reliably secure your HTTPS connections

HSTS: How the HTTPS expansion works

HTTPS, the network protocol for TLS-encrypted data transfer online can be circumvented in some cases. The danger is that encrypted websites can be accessed via unencrypted HTTP. But the HTTPS extension HSTS (HTTP Strict Transport Security) forces website access via TLS encryption, closing the security gaps that hackers like to use to intercept the HTTPS connection during transport using...

How to protect your website from malware

Malware on the server: consequences and countermeasures

A website operator is responsible for the security of a web project as well as the content. Neglecting security may lead to hackers easily infiltrating the system through security gaps. If a malware-infected website goes unnoticed, it could cause serious damage. It is therefore important to make sure your site is fully protected.

Changing an Outlook Password

Outlook: how to change your password for mail accounts, data files, and in the web app

Microsoft Outlook is one of the most popular client solutions for retrieving and managing e-mails. Using the software, multiple e-mail accounts can be easily combined and controlled through one interface. For this purpose, Outlook only needs information about the corresponding mail server and the respective log-in data. If you change these, you only have to adjust them in the client settings. But...

Change Gmail password

How to change your Gmail password

Gmail is Google’s popular free email application. To access their account, users have to log in using a password. But what if you forgot your password or want to change it? This guide sets out the steps to follow to reset or change your Gmail password.

SSL stripping – how to protect your web project

SSL stripping: Basics and protection options

Data transmission via SSL/TLS is one of the most effective means to give a web project more security. Even before packets are sent, powerful algorithms ensure the encryption of the information. If third parties capture the data on the transmission path, the true content remains hidden from them. However, it becomes problematic if attackers are active with their tools, even before the encryption...

StartTLS

StartTLS

StartTLS initiates encryption of an e-mail based on the TLS protocol. For this purpose, the server is pinged without encryption first of all, and StartTLS support is requested. The encryption method can be used when the answer is positive. StartTLS is handy, as e-mails are encrypted automatically once the method has been accepted. You don't need to contact a dedicated port, StartTLS can simply be...


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