Russian Court Dismisses Case Challenging Voice Call Restrictions in Telegram and WhatsApp

On December 29, 2025, the Taganski District Court in Moscow terminated proceedings in an administrative case brought by a group of users, led by activist Konstantin Larionov, against Roskomnadzor (RKN) and the Ministry of Digital Development (Mintsifry). The plaintiffs sought to challenge the legality of restrictions on voice calls in Telegram and WhatsApp, arguing that such measures violate constitutional rights. However, the court did not issue a ruling on the merits of the case. While the article from Xakep.ru does not provide technical details on the specific protocols or methods used for these restrictions, the case highlights ongoing tensions between regulatory authorities and encrypted messaging services in Russia. Roskomnadzor has a history of attempting to restrict or block services that do not comply with local data retention and surveillance laws. From a cybersecurity perspective, restrictions on voice calls could be implemented through various means, such as ISP-level blocking, interference with signaling protocols, or pressure on app stores to remove or restrict functionality. The lack of a decision on the merits means that the legal and technical uncertainty surrounding these restrictions persists. For cybersecurity professionals, this case underscores the importance of monitoring regulatory developments in jurisdictions with aggressive internet control policies. Organizations operating in or serving users in Russia should be aware of the potential for sudden disruptions to communication services and consider contingency planning for secure voice communication channels. It is worth noting that the technical implementation of such restrictions could have broader implications for the security and privacy of communications. For instance, if restrictions involve deep packet inspection or man-in-the-middle techniques, they could potentially weaken the overall security of affected services. However, without specific details on the methods used, a precise technical assessment is not possible. The case also reflects the broader geopolitical and regulatory challenges faced by global tech companies in markets with stringent data sovereignty and surveillance requirements. Cybersecurity teams should factor these risks into their threat models when assessing the resilience of communication platforms in high-risk jurisdictions.