The dangers of digital data security are getting bigger and more complex. Reason enough for us to explain about risks from the network and suitable protection options. We’ll tell you how to successfully fend off DDoS attacks.
What are DoS and DDoS attacks?
DoS is the English abbreviation for “Denial of Service”, which means “refusal to work”. DoS attacks are based on bombarding a server from the outside in a short time with a massive number of requests.
The consequences of this range from a significant slowdown of the affected system to a complete system crash. The latter is possible if the attacker knows about existing vulnerabilities and uses them selectively.
However, since DoS attacks are from a single attacking machine, they are often too weak to bring an enemy server to its knees. The bigger threat comes from so-called DDoS attacks.
Why are DDoS attacks so dangerous?
The abbreviation stands for “Distributed Denial of Service”. This is a combined attack by multiple hijacked computers that are aimed collectively at one target. This approach is much more efficient because it attacks from multiple directions and massively increases the number of concurrent server requests.
In addition to the higher efficiency of an attack DDoS attacks are also executed because the actual cause is harder to track because of a large number of integrated computers.
What is a botnet?
A botnet is the linking of several computers. These are unnoticed by the user infected with a virus, so they become part of a botnet. The attacker now uses the access to the hijacked machines to let them execute cyber-attacks on the desired servers.
Why are DDoS attacks carried out?
The reasons for cyber-attacks on corporate servers are very different. In many cases, which are known from the past, these were targeted revenge actions against political or ideological opponents of the hackers. For example, corporations were victims of attacks that had openly against the platform wiki leaks. These companies are next to
- Mastercard and
also several other online service providers. In the case of Amazon and Mastercard, the servers were unreachable by customer DDoS attacks over many hours.
How to prevent DDoS attacks
There are basically only technical solutions for DDoS protection. These are extremely complex because usually, the targets are servers that have the purpose of being reachable.
The only efficient way to prevent attacks is to filter inbound requests early. Prerequisite for this are, for example, firewalls, which can withstand an extreme number of requests. Such professional firewall solutions are of course anything but affordable. However, they are without alternative if you want to ward off DDoS attacks.
DDoS protection through cloud solutions
Another way companies can protect themselves against DDoS attacks is to have sufficient server capacity. Cloud solutions are a great way to increase server capacity. Because the cloud servers are distributed all over the world, they also offer much less attack surface than centrally-based servers. At best, certain parts of the server can be paralyzed. A complete server failure, however, is very unlikely to practically impossible.