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Koen Van Impe

Security Analyst

Koen Van Impe is a security analyst who worked at the Belgian national CSIRT and is now an independent security researcher. He has a twitter feed (@cudeso) and a personal blog (www.vanimpe.eu). Koen is passionate about computer security, incident handling, network analysis, honeypots, Linux, log management and web technologies. He is responsible for the follow-up and coordination of computer security incidents and gives security advise to customers.

Written By Koen Van Impe

Adhesive bandages on a computer keyboard.

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The Apache Struts 2 Vulnerability and the Importance of Patch Management

The disclosure of an Apache Struts 2 vulnerability made the framework a lucrative target and highlighted the importance of patch management.

April 25, 2017 | By Koen Van Impe

A businessman about to step on a banana peel.

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Simplifying Risk Management

To properly manage risk, security analysts must understand the threats and vulnerabilities that exist on their networks and assess their consequences.

March 28, 2017 | By Koen Van Impe

A businessman reaching into one computer monitor and out from another.

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Don’t Let Remote Management Software Contribute to Building Botnets

IT leaders must be vigilant when using remote management software. Attackers can exploit these tools to infect devices with malware and build botnets.

January 11, 2017 | By Koen Van Impe

It might seem obvious, but the first step toward solid account protection is using strong passwords. Security leaders should require users to create unique passwords, change them regularly and organize them with a password management solution.

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Data Breaches and the Importance of Account Protection and Incident Response

Data breaches can be devastating to an organization. Defense against data breaches starts and ends with account protection and incident response.

October 18, 2016 | By Koen Van Impe

SPF is a mechanism that specifies which servers should be able to send email to a given domain by analyzing the "mail from" header. DKIM is a method designed to authenticate and verify the validity of the signatures in email headers.

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Understanding the SPF and DKIM Spam Filtering Mechanisms

Sender Policy Framework and DomainKeys Identified Mail are two techniques that can be used to limit the amount of spam in inboxes.

August 24, 2016 | By Koen Van Impe

Blockchain technology may be closely associated with bitcoin, but there is much more to this growing technology than one form of cryptocurrency. In fact, organizations could leverage blockchains to decrease their transaction costs.

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Will Blockchain Technology Replace Traditional Business Models?

Blockchain technology has become a hot trending topic within the computer world in the last couple years. There's more to it than just bitcoins.

July 6, 2016 | By Koen Van Impe

Incident handling can be improved when security professionals have the opportunity to learn and practice. Unfortunately, the materials needed for this are not always readily available, which is why we've assembled a list of training options.

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Security Training for Incident Handling: What Else Is Out There?

This follow-up article offers even more options for improving incident handling through training courses, workshops and challenges.

May 31, 2016 | By Koen Van Impe

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The New Glibc Getaddrinfo Vulnerability: Is It GHOST 2.0?

Is the new glibc getaddrinfo vulnerability really GHOST 2.0? Signs point to yes, so organizations should patch this vulnerability immediately.

March 21, 2016 | By Koen Van Impe

Security training is one element of professional development that always needs to be focused on, especially for professionals working in incident handling and response. Luckily, there are many avenues for training, networking and learning.

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Security Training for Incident Handlers: What’s Out There?

Security professionals focused on incident handling and response have the opportunity to learn a lot from security training and certifications.

March 10, 2016 | By Koen Van Impe

Web server DDoS attacks can occur in a number of ways, and they may stem from anyone from cybercriminals to bored teenagers. This variety makes them difficult to prepare for, but it is possible to improve a defense system with the help of certain tools.

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Defending Against Apache Web Server DDoS Attacks

Here's what you need to know about Web server DDoS attacks, how to defend against them and what tools are available to help in your efforts.

December 9, 2015 | By Koen Van Impe