Iranian Cyber Actors Deploy CHOSEN BRICK Spyware Against Dissidents

• •CHOSEN BRICK spyware targets dissidents and journalists globally.
• •Attackers use social engineering via WhatsApp and Telegram to deliver malware.
• •Iran's cyber operations aim to suppress critics of the regime.

On September 15, 2026, the UK, US, and Netherlands issued a joint advisory regarding the CHOSEN BRICK malware, used by Iranian state-linked actors to target dissidents, activists, and journalists. This spyware is delivered through spear-phishing campaigns on messaging platforms like WhatsApp and Telegram, enabling attackers to steal sensitive information such as emails, messages, and contacts. The malware can also capture screen content and activate device microphones. The advisory highlights that the Iranian regime utilizes such cyber operations to suppress perceived threats, with some victims' personal details appearing on pro-Iranian leak sites. The campaign has been active since at least 2025, with a focus on individuals in the UK, US, and the Netherlands. Attackers often impersonate trusted contacts to build rapport before delivering the malware disguised as legitimate software. The FBI attributes the malware to Iran's Ministry of Intelligence and Security (MOIS).