Article: what is ransomware and how does it work?

What is ransomware?

Ransomware, also known as hostage software, is a type of malware that encrypts data, but also systems and an entire network, where the victim has to pay money to regain access. This is usually done by criminal organizations to make money. Ransomware has grown considerably in popularity among malicious parties in recent years. For example, the number of ransomware attacks registered with leading insurance company Chubb has risen on average by 12% a year in recent years compared to the previous year, with the number of attacks in 2019 increasing by as much as 18%. One of the best-known ransomware is WannaCry, affecting various organizations internationally.


There are several ways in which a ransomware can infect a computer or network. The most common way is through spam: emails sent to trick the recipient into clicking a link or opening a file. Another way is by visiting infected websites, where visitors automatically download malware. This can be websites that are specially designed to distribute ransomware, but also websites that are themselves infected without knowing this.


When your organization is dealing with ransomware, it is always recommended that you do not pay any money to unlock your files, systems and networks. The reason for this is that the malicious person will come back to you more often and moreover this person cannot be trusted, so there is no guarantee that your files will be released. Cyber4Z supports you and your organization in helping to prevent ransomware attacks. We use proven technologies and organizational measures to better prepare your organization for possible ransomware attacks. Feel free to contact us for more information, we are happy to assist you!

Cyber4Z and Cyber4Z-GCC successful in the Gulf region during the Cyber Security Conference in Kuwait City

Cyber4Z-GCC had a successful presence during the 2nd Cyber Security Conference in Kuwait City. Prof. Dr. Safaa Zaman, Full professor of the University of Kuwait and General Manager of Cyber4Z-GCC organised this second event with support of his Highness, the Prime Minister Sheikh Jaber Almubarak Alhamad Alsabah. Rob Mellegers was invited to present about risks from open sources. He had assessed 4 companies in Kuwait from open sources without performing a scan or penetration test. The results have been presented and discussed afterwards. Thanks to the solution of Cyber4Z partner SecurityScoreCard, we were able to find many interesting results. The solution is used for Third Party Management. Some Dutch based products have been presented as well, like the Ubikey. An invention from NXP to handle authentication without passwords.


Cyber4Z will support the Cyber Resilience Center Brainport by performing security health checks for a part of the joined organizations

Cyber Resilience Center Brainport is the first in the Netherlands in having a Cyber Resilience Center to help companies within the knowledge-intensive industry with resilience against digital espionage and sabotage. This makes the high-tech region the leader in the Netherlands that -in addition to the vital sectors as designated by the Dutch government (such as health care, energy, harbor, etc.)- is making serious work out of cyber resilience.

For more information about CWC Brainport, visit LinkedIn or the website of Brainport.

Cyber4z welcomes two new colleagues: Arissa en Burak!

Cyber4Z is pleased to announce two new colleagues to our team as of the 1st of October. They introduce themselves below. Welcome Arissa and Burak and lots of success and fun!

My name is Arissa D’Fonseca and I am currently in the 3rd year of HBO ICT and I specialize in Cyber Security. I am very curious about the field of the Cyber Security industry. Cyber4Z gives me the opportunity to combine studying, working and gaining experience. There is a lot that I want to learn and I expect to gradually expand my knowledge and expertise and ultimately apply this carefully to Cyber4Z and its customers.

My name is Burak Agyel and I have a background in both IT and information security. I have always combined working and learning and therefore successfully gained work experience as an administrator during my MBO ICT management and HBO ICT Management & Security. I have worked as a security consultant with various clients in recent years and will serving clients at Cyber4Z, with a focus on technical / IT security.

Cyber4z positively assessed on ISO 27001 and 9001 surveillance audit

Cyber4Z has been certified against ISO27001 and ISO9001 for a number of years now. Certification is a way to formally prove that we handle confidential information responsibly, since we have set up an information security management system in a structured manner. In the first three years we are tested annually by means of a surveillance audit. If there have been changes in the management system, it will be independently assessed whether we have organized these changes in a responsible manner. Because we help our customers with various certification processes, we believe that we ourselves must also comply with the security guidelines from both ISO standards. That is why we are pleased that DEKRA has acknowledged again that we can continue to maintain our certificate. Compliments for the entire team who took responsibility for the activities in a continuous improvement process and that we are able to manage our management system and the associated measures, and thus managing the risks adequately!

Strategic partnership between Foreach-IT & Cyber4Z

Cyber4Z is very pleased to announce that Foreach-IT and Cyber4Z have signed a contract for a strategic partnership. We will be able to deliver security software in addition to consultancy. The focus of this software is on risk and compliance, in particular technical compliance in accordance with the BIO (Baseline Information Security for the Government), which is derived from ISO 27001:2017 and ISO 27002:2017. In addition, access mechanisms are incorporated into the software, in partnership with SSH, so that administrators have controlled access to the systems they manage, based on the keywords manageability, controllability and irrefutability.

Nice collaboration between Brunel and Cyber4Z!

Brunel organizes the exclusive 'Meet & Inspire event: Ethical Hacking' on Thursday 6 June 19 at Van der Valk Hotel Brussels Airport for cyber security and information security professionals. From Cyber4Z, Rob Mellegers and Raf Martino will share their expertise with ethical hacking that evening. Do you want to be attend this event? Register now via Be quick, because the places are limited. .

Frank van Hooft, our new colleague in the role of Senior Security Consultant

My name is Frank van Hooft, on March 1st I will join Cyber4Z as Senior Security Consultant. With a background in process and project management, I started with information security twelve years ago. The width and depth of information security has grabbed me. The multitude of topics such as risks and mitigating measures, the difficult communication between "the business" and "IT" are some examples of the world in which I feel at home. I get my energy by supporting "business" in this.

I live in Almkerk, together with my wife and son of 22. My hobbies are music, reading, exploring Scotland and going out on my motorbike.

Cyber4Z is wishing you a succesfull 2019!