When reporting a cybersecurity incident, experts from the GovCERT.CZ or National CERT are ready to provide technical and analytical assistance, including methodological guidance. In the case of a cybersecurity incident with broader impact, the CERT acts as a coordinating authority among all relevant stakeholders, ranging from providers of the compromised service, through partner investigative teams, to foreign authorities and their analytical teams.
Timely reporting of a cybersecurity incident does not in itself lead to the initiation of an inspection of your organisation or the imposition of sanctions. Its primary purpose is to ensure the incident is recorded and analysed and, where appropriate, that advice and assistance are provided. Reports are also accepted from entities that are not regulated under the Cybersecurity Act and are therefore not legally obliged to report cybersecurity incidents. Subject to available capacity, such entities may also be provided with methodological and technical/analytical assistance. Information obtained may further be used to analyse broader threats and to help prevent similar incidents in other organisations.
For more detailed information on cybersecurity incident reporting, please refer to the Methodology for Reporting a Cybersecurity Incident.
Reporting Method
VIA FORM
Cybersecurity incident reporting pursuant to Cybersecurity (the new Act on Cybersecurity), is carried out by all regulated entities primarily via electronic forms available on the NÚKIB Portal.
If you were an obligated entity under the former Act No. 181/2014 Coll., on Cybersecurity (the previous Act on Cybersecurity), a transitional period of one year applies from the date of receipt of the decision on the registration of the regulated service. During this transitional period, for services and information systems previously regulated under the previous Act on Cybersecurity, obligated entities are required to fulfil at least the following obligations:
- Provider of a regulated service under the higher obligations regime:
complies with obligations related to the implementation of security measures, reporting of cybersecurity incidents, and compliance with measures issued by NÚKIB, in accordance with the previous Act on Cybersecurity. - Provider of a regulated service under the lower obligations regime:
complies with obligations related to the implementation of security measures, reporting of cybersecurity incidents, and compliance with measures issued by NÚKIB, in the scope required by the new Act on Cybersecurity.
From the date of receipt of the decision on the registration of the regulated service, cybersecurity incidents must be reported via the NÚKIB Portal. For a period of one year following the date of receipt of the decision on the registration of the regulated service reports may be submitted either on the forms prescribed under the previous Act on Cybersecurity or on the forms prescribed under the new Act on Cybersecurity.
Procedure when the NÚKIB Portal is Unavailable
If it is not possible to use the NÚKIB Portal, a cybersecurity incident may be reported using an alternative reporting method pursuant to Section 16(4) of Act No. 264/2025 Coll., on Cybersecurity, by completing the relevant form and submitting it as follows:
Providers of Regulated Services under the Regime of Higher Obligations
- by email: cert@nukib.gov.cz
- via data box: zzfnkp3
Providers of Regulated Services under the Regime of Lower Obligations
- by email: abuse@csirt.cz
- via data box: h4axdn8
This method is intended solely as a temporary emergency solution. To ensure efficient communication during incident handling, we recommend submitting the report subsequently via the standard electronic form on the NÚKIB Portal.
Form for cybersecurity incident reporting in the event of NÚKIB Portal unavailability:
Substitute Cybersecurity Incident Reporting Form (PDF)
BY TELEPHONE
In the event of a serious and urgent situation where there is a risk of delay, the GovCERT.CZ team may be contacted during working hours on +420 541 110 555, or outside standard working hours on +420 725 502 878. Our specialists will provide instructions and recommendations for managing the initial phase of the incident and will further direct you if necessary.
Telephone contact is intended primarily for rapid communication and immediate assistance and does not constitute an official incident reporting channel. To fulfil statutory obligations, the incident must always be reported in writing using the prescribed forms.
GovCERT.CZ respects the privacy of all contacting persons and organisations and treats all reported cybersecurity incidents as sensitive information.

