Security Wiki
In-depth knowledge on cybersecurity incidents, definitions, and emerging threats.
Ransomware
Ransomware is malicious software that encrypts your files and demands payment for the decryption key. It's one of the mo…
Read articleData Breach
A data breach occurs when sensitive, protected, or confidential information is accessed, disclosed, or stolen by unautho…
Read articleInsider Threats
Insider threats originate from individuals within your organization (employees, contractors, or business partners) who h…
Read articleDDoS Attacks
A Distributed Denial of Service (DDoS) attack overwhelms your systems, servers, or network with a flood of traffic, maki…
Read articleMalware
Malware (malicious software) is any software intentionally designed to cause damage to computers, servers, networks, or …
Read articleSupply Chain Attacks
Supply chain attacks target the less-secure elements in your supply chain (software vendors, service providers, or hardw…
Read articleCredential Stuffing
Credential stuffing is an automated attack that uses stolen username/password combinations from previous data breaches t…
Read articleZero-Day Vulnerabilities
A zero-day vulnerability is a software security flaw that is unknown to the vendor and for which no patch exists. 'Zero-…
Read articleSocial Engineering
Social engineering is the psychological manipulation of people into performing actions or divulging confidential informa…
Read articleWhat is a data breach
A data breach is any event where personal data is accessed, copied, lost, or altered without authorisation. Under the GD…
Read articleWhat to do after a ransomware attack
Isolate affected hosts from the network immediately, but do not power them off or reboot them. Volatile memory may hold …
Read articleHow to recognise a cyberattack
A cyberattack rarely announces itself. The earliest signs are usually subtle: a login from an unfamiliar country, an ema…
Read articlePhishing attack example
A typical phishing attack in the Netherlands in 2026 starts with an email that looks like a legitimate message from Micr…
Read articleBreach notification requirements Netherlands
Dutch organisations must report a qualifying personal data breach to the Autoriteit Persoonsgegevens within 72 hours of …
Read articleReporting a data breach Netherlands
Report a data breach to the Autoriteit Persoonsgegevens through the online notification form on autoriteitpersoonsgegeve…
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