Glossary
The cybersecurity world is full of acronyms — here's a clear definition of each term you'll meet in NIS2YOU and in regulatory requirements.
Authorities and regulators — Belgium
- CCB
- Centre for Cybersecurity Belgium. The competent Belgian authority for NIS2 — significant cyber incidents are notified here (24h / 72h / 1 month).
- DPA
- Data Protection Authority. The Belgian regulator for GDPR (in French: APD; in Dutch: GBA). Personal data breaches are notified within 72h. Don't confuse with Data Processing Agreement (also DPA).
- CERT.be
- Belgian Computer Emergency Response Team. CCB service that helps organisations hit by a cyber incident.
Authorities and regulators — France
- ANSSI
- Agence Nationale de la Sécurité des Systèmes d'Information. The competent French authority for NIS2 (transposed by the REN law of 30 April 2024). Receives notifications of significant incidents (24h / 72h / 1 month).
- CNIL
- Commission Nationale de l'Informatique et des Libertés. The French GDPR regulator. Personal data breaches are notified within 72h.
- CERT-FR
- French Computer Emergency Response Team, operated by ANSSI. Issues alerts and assists incident victims.
- cybermalveillance.gouv.fr
- Victim assistance platform (SMEs, individuals, local governments) — guidance and connection to vetted service providers.
Authorities and regulators — Luxembourg
- HCPN
- Haut-Commissariat à la Protection Nationale. Luxembourg's national cybersecurity authority — drives the national strategy and NIS2 transposition.
- ILR
- Institut Luxembourgeois de Régulation. Competent NIS2 authority for digital services and critical infrastructure. Receives notifications of significant incidents.
- CNPD
- Commission Nationale pour la Protection des Données. The Luxembourg GDPR regulator. Personal data breaches are notified within 72h.
- CIRCL
- Computer Incident Response Center Luxembourg. National CERT for the non-governmental private sector — assistance, alerts, MISP.
- GovCERT.lu
- CERT for Luxembourg public administrations and operators of vital importance.
Authorities and regulators — Netherlands
- NCSC-NL
- Nationaal Cyber Security Centrum. The central Dutch cybersecurity authority and NIS2 point of contact for essential entities.
- CSIRT-DSP
- CSIRT for Digital Service Providers. Receives NIS2 notifications specifically from cloud providers, marketplaces, and search engines.
- AP
- Autoriteit Persoonsgegevens. The Dutch GDPR regulator. Personal data breaches (datalek) are notified within 72h.
- DTC
- Digital Trust Center. Dutch government programme that helps SMEs with cybersecurity — alerts, guides, community.
European authorities
- ENISA
- European Union Agency for Cybersecurity. Publishes guidelines and frameworks and coordinates national CERTs.
- EDPB
- European Data Protection Board. Coordinates the national GDPR regulators (DPA, CNIL, CNPD, etc.).
Regulations and frameworks
- NIS2
- Network and Information Security Directive 2. EU directive (2022/2555) imposing cybersecurity obligations on essential and important entities — risk management, incident notification, governance.
- GDPR / RGPD
- General Data Protection Regulation (in French: Règlement Général sur la Protection des Données). EU regulation (2016/679) governing personal data processing.
- ISO 27001
- International reference standard for Information Security Management Systems (ISMS). Certifiable.
Roles and functions
- DPO
- Data Protection Officer. Person responsible for GDPR compliance within the organisation. Mandatory in some cases.
- CISO
- Chief Information Security Officer. Responsible for the security strategy.
Documents and procedures
- DPIA
- Data Protection Impact Assessment. Mandatory analysis for high-risk personal data processing.
- DPA (agreement)
- Data Processing Agreement. Contract framing personal data processing by a subcontractor. Don't confuse with the regulator (Data Protection Authority).
- IRP
- Incident Response Plan. Document describing who does what during an incident.
- BCP
- Business Continuity Plan. Plan to keep the business running despite a major disruption.
- DRP
- Disaster Recovery Plan. Technical plan to restore systems after a major incident.
- BIA
- Business Impact Analysis. Analysis identifying critical processes and dependencies, prep for BCP / DRP.
Security technologies
- MFA / 2FA
- Multi-Factor / Two-Factor Authentication. Strong authentication combining password + a second factor (TOTP code, USB key, biometric).
- TOTP
- Time-based One-Time Password. 6-digit code that changes every 30 seconds (Google Authenticator, Authy...).
- EDR
- Endpoint Detection & Response. Next-gen antivirus that detects suspicious behaviour on endpoints (Defender, CrowdStrike, SentinelOne...).
- SIEM
- Security Information & Event Management. System that centralises logs and detects suspicious patterns (Splunk, Elastic, Wazuh, CrowdSec...).
- DLP
- Data Loss Prevention. Tools preventing leakage of sensitive data via email, USB, or cloud.
- VPN
- Virtual Private Network. Encrypted tunnel for remote access to the internal network.
- RBAC
- Role-Based Access Control. Model where rights are granted via roles (Admin, Manager, User...) rather than individually.
- SSO
- Single Sign-On. One login gives access to several applications (Azure AD, Okta...).
Attacks and threats
- DDoS
- Distributed Denial of Service. Attack saturating a service with massive request volume to take it down.
- Phishing
- Fraudulent email/SMS/call impersonating a legitimate source to extract credentials, transfers, or malicious clicks.
- Vishing
- Phone-based phishing (voice phishing). Often targets CFOs for urgent transfer requests.
- Ransomware
- Malware that encrypts your data and demands a ransom for decryption.
NIS2YOU terms
- Tenant
- A single isolated client organisation. Each tenant has its own data, users, and configuration. Your data is never visible to another tenant.
- Owner / Admin / Risk Manager / Contributor / Auditor
- The 5 NIS2YOU roles, from most powerful (Owner) to read-only (Auditor).
- P / I (heatmap)
- Probability / Impact. The two axes for scoring a risk, each on a 1-5 scale.