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Hacker working on the robot.txt file
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Robots.txt & cybersecurity: Protecting your web applications from hackers

What is a Robots.txt file?

A robots.txt file is a simple text file that should be available at the root level of the application, like the one on the Excellium website. This file is here to allow or avoid the search engine robots to crawl some parts of the website.

For that example, the robots.txt file provides the website’s sitemap to help search engines browse all links more easily than browsing each page one by one and discovering links recursively. That also allows indexing the pages that don’t have external references to them. Read more

Industries
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How to protect industrial assets with control access ?

As industrial IoT expands, equipment and systems are increasingly connected and must be protected from new digital threats. Without proper security, organizations can be infiltrated by hackers and terrorists, or simply left exposed by negligence.

Securing IT systems in industrial organizations is critical, and becoming more important daily as the digital transformation increasingly connects systems and equipment.

 

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Code macro
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Abusing macro to get code execution from a Word document

In order to gain initial access as part of a red team exercise, phishing is a very popular approach. A convincing scenario must be found to entice the targets to download and run the malicious file on their laptop. Using a Word document with a macro that launches the malware is a good way to create a legitimate scenario and build target confidence. However, it is necessary to work ahead of time on the macro to avoid defensive measures. For the following, we will choose to target an up-to-date Windows 10 version with all default settings. We will then see what we need to do for our macro to be recognized as legitimate.

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Continuous deployment: applying security for web application development

The rise of Continuous deployment

With the rise of the Continuous Deployment[1]https://www.atlassian.com/continuous-delivery/continuous-deployment activity, the frequency at which web applications (website, API, etc.) are deployed has significantly increased. Nowadays it is common to see companies deploying a new version of a web application several times a weeks/months[2]https://cloud.google.com/blog/products/devops-sre/another-way-to-gauge-your-devops-performance-according-to-dora.

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References

Legos representing different components of a composition
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Risks linked to external dependencies

Nowadays, most of the software is based on external components that are created and maintained by external entities. External components are also named “third-party” components and can be, for example, a library. The objective is, most of the time, to delegate specific operations to dedicated components. This facilitates the maintenance of the main application and lets the developers focus on the code providing the business features. The type of operation performed by a component can be, for example, Processing of specific file format, logging, handling of business data formats (e.g., SWIFT) and so on.

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Someone communicating with hands
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Cyber crisis management in 4 steps

In this article, we address cyber crisis management. Indeed, a cyber crisis is the consequence of one or more malicious actions taken on the information systems of an entity. They may have consequences that can be disastrous both financially and reputationally speaking.

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SOC Visual - banner
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24X7 Detection & Response with Excellium Services Belgium

In a world where technology prevails and exchanges and data storages are fully digitalized, cybersecurity is a key element in an organization’s resiliency.

Resiliency is the ability of organizations, relying more and more on computing tools, to “survive” in case of IT tools’ failures. Considering the current cyber threats, this aspect has never been so important and preoccupying for Security & IT Experts. In fact, Belgium registered a rise of 30% in cybercrimes between 2018 and 2O19 (source: ccb.belgium.be). Choosing the right cybersecurity partner is now a major challenge.

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What is Web Cryptography API?

Before getting down to today’s topic, Web Cryptography API, note that all the photos below are available here1https://github.com/ExcelliumSA/WebCryptographyAPI-Study/tree/main/post in better quality.

Anyone developing a web application with a front-end may need to perform cryptographic operations like hashing, encryption, signatures on the client-side (JavaScript code). The habits lead to import and use popular external libraries like crypto-js21. https://www.npmjs.com/package/crypto-js  in order to be portable across all targeted browsers:

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OAuth & OIDC article illustration
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How to evaluate an “OAuth/OpenID Connect” system from a security point of view?

This post presents a collection of security-oriented validation points that should be verified on a system using OAuth/OpenID Connect (OpenID Connect will be called OIDC in the rest of the post). Therefore, it assumes you are familiar with all the concepts related to OAuth/OIDC. All references to OAuth refer to OAuth 2.0.

If it is not the case then you can refer to this free online course named “Introduction to OAuth 2.0 and OpenID Connect“ kindly created and provided by Dr. Philippe De Ryck or the several tutorials from ConnectId.

Note that this post is mainly security-oriented feedback following a complete focused training that I have recently taken on the OAuth/OIDC topics.

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