Cyber4Z in short

Cyber4Z started in 2015 with two specialists experienced in the cybersecurity domain. We now have a team with various capabilities in the field of strategic and tactical design of cyber security, IT, Privacy and Blockchain technology.

In addition, we are involved in technical and tactical implementations of complex security challenges that focus on the acceptance of new technologies in a pragmatic way. With our expertise and experience, we can guarantee the business objectives of our clients. These are widely determined by laws and regulations, customer requirements and rules of compliance.

  • Predict

  • Prevent

  • Detect

  • Respond

  • Remediate

Who are we?

Our team consists of certified professionals. Quality is our top priority. The technical and tactical implementations we deliver from the strategic design can be externally certified against the ISO9001, ISO27001, NEN7510 or other standards. Therewith we can have our quality tested externally as well. In addition, we provide operational knowledge when it comes to technical security assessments such as penetration tests, project management, SOC / SIEM propositions with connecting services such as log management, vulnerability and compliance management, patch management, training in the field of privacy, security and blockchain technology.

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Monthly cybernote


Vodafone warns customers against possible call fraud

Telephone calls from the Netherlands to possibly fraudulent foreign numbers will now include Vodafone with the message: "Please note, you are calling a foreign number. High costs can be associated with this. If you do not want this, disconnect the connection.” The telecom provider hopes that fewer customers will incur unnecessary costs and the number of complaints about this type of fraud will decrease.

This is often referred to as Wangiri fraud, where fraudsters want customers to call back an expensive foreign number. Since July 2018 alone, Vodafone has blocked several hundred foreign numbers / number ranges as a result of Wangiri complaints. This concerns many thousands of duped customers. Providers can unfortunately not prevent customers from receiving Wangiri calls, because fraudsters always use new numbers.

Wangiri fraud
'Wangiri' is a Japanese term and means 'transfer and stop' once. In Wangiri fraud, a swindler with a foreign number calls a Dutch customer. The scammer breaks the connection before the customer has answered the call. The customer sees a missed call and often calls back to the expensive foreign number of the swindler. The scammer is the user of this foreign number and every time there is a call to this number, the crook receives part of the call charges. The costs can be considerable for the customer.the expensive foreign number of the swindler. The scammer is the user of this foreign number and every time there is a call to this number, the crook receives part of the call charges. The costs can be considerable for the customer.

Source: Infosecurity magazine