In the aftermath of the terrorist attack at Zámocká Street, the Council for Media Services became involved in global counter-terrorism initiatives such as Christchurch Call, GIFCT, Tech Against Terrorism, The Global Partnership for Action on Gender-Based Online Harassment and Abuse. In cross-border cooperation, the regulator has been able to share best practices in the fight against illegal content while forging important bilateral relationships.
In February 2023, the Council for Media Services was contacted by staff from one of New Zealand's media regulators, the New Zealand Classification Office. Its remit includes the classification of media content. In addition to assessing legality, it assesses the appropriateness of content (e.g. profanity, violence, etc.). In a bilateral meeting attended by staff from the Analysis Unit, the Council for Media Services obtained a decision to classify the manifesto of the attacker from Zámocká Street as illegal terrorist content.
The decision, available in English, analyses in detail the various parts of the attacker's manifesto and links them to ultra-right-wing, neo-Nazi, racist and conspiracy theories. Based on this analysis, the document was classified as illegal terrorist content by the New Zealand regulator on 17 October 2022.