DDoS Attack

What is a DDoS Attack? How do you protect yourself from a DDoS Attack?

What are DDoS Attacks?

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. This differs from conventional DoS attacks, in which the attack is only carried out from a single system.


The number of excessive requests makes it difficult to identify or block every single attacker using an IP address. Due to high computing capacities, cyber criminals can carry out server requests in a much shorter time. This is ensured by the infiltrated bot network, which coordinates the attacks. The computer systems illegally brought under the control of the attacker receive appropriate commands via this route. Here the attacker uses a Trojan. This is used to control the bot network. A company’s mail server, for example, could be the target for a DDoS attack.

DDoS Attack Process

Impairment of data traffic through the sending of illegitimate data packets with a huge data volume. It may no longer be possible to process conventional inquiries. The massive transmission of data generates a veritable flood of data. This form of DDoS attack can affect the bandwidth used by the target system. The data that are responsible for bandwidth drops are also referred to in English as “junk data”. The effects range from a small restriction to a complete failure of the network and device resources. Attacks on applications are carried out using specifically structured data packets that are tailored to the target of the attack. The services are as a result of the DDoS attack no longer or only partially available.

Measures to protect against a DDoS Attack

According to the current status, the threat situation in the area of ​​cyber crime shows an increasing tendency. Due to this fact, mechanisms that can detect and fend off a DDoS attack are of particular relevance in the field of IT security services. Appropriate security concepts must ensure that a DDoS attack is reliably detected and repelled. Possible weaknesses in companies often result from the fact that measures to combat DDoS attacks are not scalable.

With mail servers, for example, there is the possibility of implementing the Hornetsecurity spam filter service for companies. This reliably recognizes the common forms of DDoS attacks. But how does the introduction of appropriate security mechanisms in the company work in general? Basically, it is important to first analyze the infrastructure in the company network. In the next step, a concrete action plan should be drawn up with regard to any server inquiries.

The introduction of a backup service is particularly important with regard to data security, whereby the question of the form in which a backup should be made remains to be clarified. This means, for example, whether a corresponding backup should be kept locally or whether an external cloud storage solution should be used by companies that specialize in data security. The effects that can result from a possible DDoS attack are very difficult to assess. Professional cyber criminals are becoming more and more sophisticated in their endeavors. This applies in particular to the blocking of bandwidth and, at the same time, to the intensity of the DDoS attacks. Both together represent a security problem that should not be underestimated. The so-called Gbps attacks (gigabits per second) in the area of ​​cybercriminality are increasingly becoming the focus of events. These are large-scale attacks that are characterized by even larger floods of data.

Hackers are able to tailor their DDoS attacks to the existing security barriers in a company. This is possible not least because of the scalability of the DDoS attacks. The target system can consequently be compromised by the cyber criminals. The introduction of appropriate countermeasures in advance is of great importance. This procedure ultimately serves to protect the company.

Mobile Bot Networks

Bot networks are now also appearing in a different form. For example, mobile devices infected with malware are repurposed as actors in a DDoS attack. Cyber ​​criminals often have an easy time of it in this area. The problem can be traced back to the fact that mobility is increasingly finding its way into the corporate sector. This opens up further options for attackers to carry out their attacks.

The Financial Damage to Businesses

On closer inspection, this leads to additional financial expenditure. Here companies will inevitably have to adjust to higher costs in the coming years.

Of course, this primarily applies to the implementation of appropriate defense mechanisms. However, these are necessary preventive measures.

Ultimately, companies have the choice of arming themselves against cyber attacks in good time and investing in an appropriate security structure or dealing with the follow-up costs of a cyber attack.

Possible failures caused by a DDoS attack can lead to escalating costs for an affected company. These can arise, for example, through recourse claims from customers.

In addition, of course, the costs for legal disputes must also be listed, which are also difficult to estimate. The same applies to the loss of reputation that is regularly associated with such an attack.

DDoS Protection – How do companies protect themselves from DDoS Attacks?

Companies face a challenge. This particularly applies to those who have already been affected by a DDoS attack in the past. It is important to find a suitable IT security concept and implement appropriate countermeasures. What you have to pay attention to when making your choice is explained below.

1. Firewalls

It is recommended to use appropriate defense mechanisms. IPS and firewalls offer a certain level of protection, but these security measures are inadequate with regard to a DDoS attack, as this form of cybercrime is characterized by a certain degree of sophistication and can take place flexibly. The security solutions already implemented in a company are often overridden by broadband attacks, which at the same time can block the entire network infrastructure. As a result, mail servers or websites are no longer available. A “worst case” to be taken seriously for every company. For this reason, it should be in the interests of the company’s internal security officers to interpose a DDoS defense solution as a preliminary stage.

2. Protection Against Web Based Applications

A large number of processes in companies are based on web applications. They are now part of the standard repertoire of every company. This applies in particular to the processing of inquiries in customer support, the acceptance of new orders and the provision of interfaces for partners on websites. The constant maintenance of these network infrastructures is to be regarded as elementary here. After all, users expect a certain level of availability and security. Even professional cyber criminals have recognized that core processes in companies are increasingly based on web applications. Attacks on applications are rarely found in practice, as this type of DDoS attacks is associated with a high level of technical effort; nevertheless, these are risks that are difficult to calculate. Appropriate protection is also often difficult. Such a successful DDoS attack can significantly restrict processes on servers, especially data transmission.


3. A Multi Level Security Strategy

In the case of smaller DDoS attacks, defense against attacks does not represent a major challenge. The situation is different if Denial of Services attacks are characterized by a large extent with unforeseeable effects. Here the existing firewall concepts in the company can quickly reach their limits. This applies to both the hardware and the software level. Multiple-layer solutions are particularly suitable for such forms of attack. In principle, they serve to defend against scalable DDoS attacks.

4. Functionality of the Security Solution

The effective protection against DDoS attacks should therefore start on several levels. This is the only way you as a company can reliably protect yourself from such attacks. Of course, this also applies to the core of the infrastructure of your own company network. Authentication, package, application and verification management are particularly common here. The control of the access levels through the specific definition of guidelines must also be taken into account.

5. Multilayered DDoS Defense

With regard to the implementation of sustainable DDoS attack protection, a differentiated approach is always advisable. Not only at the application level, but also in general terms, the preferred defense solution should recognize individually designed attack patterns and reliably counteract them. The calibration of such a system turns out to be a task that should not be underestimated in practice. What is meant here is to make a specific distinction between legitimate inquiries and whether these are unauthorized. The latter are characterized by a not exactly low data volume and should be recognized and blocked in good time. This includes the mechanisms of IP filtering.

Protect with Hornetsecurity

As shown, risk management plays a significant role in DDoS defense. Timely action is advisable here. This is especially true when it comes to the security of internal company data. The network security of companies must fundamentally be understood as a dynamic process. A static, once implemented solution should be constantly questioned and adapted. Attack and behavior patterns from the area of ​​cyber crime must be constantly monitored in order to be able to react to threats. Hornetsecurity offers a sustainable security concept for the mail server sector, which effectively counteracts DDoS attacks and reliably deals with current threats and dangers. Get to service here.

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