Security

Online identity theft protection

Online identity theft protection

Many only know internet identity theft and similar crimes from movies or television. But stories of online fraudsters are not just merely screenwriters’ fantasies; for many the experience is all too real. Online identity theft has become more and more of a problem over the past few years, and everyone is a potential victim. We have compiled some preventative steps than can help you stay out of the...

Encryption methods: An overview

Encryption methods: An overview

E-mail, instant messaging, or voice-over IP: If you want to communicate over the internet, you should make sure that the data transfer process can be trusted. The same goes for the World Wide Web. With online banking and digital shopping, money transactions are increasingly being carried out online. Popular encryption methods like DES, AES, or RSA should guarantee the security of passwords, credit...

Referral spam: causes and countermeasures

Referral spam: attack patterns and countermeasures

Do you find that lots of the traffic that arrives on your site comes from suspicious sources? There’s no need to worry since website operators encounter inconsistencies in reports from analysis tools (such as Google Analytics, Piwik, or etracker). The reason: referral spam falsifies visitor statistics. Learn how hackers can manipulate referrer information and traffic data, as well as which...

Port scanning: introduction and basics

How port scanning contributes to your system’s security

It’s easy to lose track of all the different programs that are responsible for inbound and outbound data traffic. Networks hosting a large number of computer systems that are constantly communicating with online services often require technical backup. High-performance tools check the activities of various applications or computers and can close existing security gaps. Using port scanners is one...

Penetration testing – the complete network check

Penetration test: how to find weak points in your network

The more complex a network is, the more vulnerable it is to attacks. In times when customers and partners have access to internal network structures via the internet, and can control various applications via web interfaces, IT employees are encountering more and more problems. Large companies, in particular, prefer to use penetration testing to check how well their security concept works. This...

What is a demilitarized zone?

Demilitarised zones: internal network protection

Companies hosting their own websites, an online shop, or e-mail inboxes should make sure to separate the corresponding server of these from the local network. This makes it possible to protect devices within the company network from hacker attacks that take place on public networks. Solid protection comes in the form of a demilitarised zone, which separates endangered systems from sensitive...

Hardware firewall: the more stable firewall solution

Hardware firewall – the external security system

Most computer users are at least aware of the term firewall. When activated, they help protect computers. But notifications about blocked applications can become a source of irritation for many users, especially when the background information for such messages is unknown. But how do firewalls work? And what role do hardware firewalls play in protecting your computer?

IPsec: security architecture for IPv4 and IPv6

Secure network connections with IPsec

A big problem with the previous Internet Protocol version, IPv4, was the missing guarantee of security standards of integrity, authenticity, and confidentiality. This previous protocol lacked the necessary means to identify data sources or enable secure transport. The protocol suite IPsec, developed for IPv4’s successor, IPv6, has changed the situation for Internet Protocol overnight.


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