Iran Turns to Digital Surveillance Tools to Track Down Protesters

These digital surveillance abilities have received less attention than the internet blackouts that the government imposed during the violent crackdown to end the protests last month. But as authorities slowly restore some online access, they have detained people who were believed to have attended protests and subjected them to hours of interrogation based on facial recognition and phone data, according to accounts from Iranians and a government security official in the country. Some people who posted on social media about the protests and other political topics have had their phone SIM cards suspended -- effectively shutting off access to mobile networks -- while others received warning phone calls and faced banking service interruptions, according to a report that was released this week by Holistic Resilience, a digital rights group focused on Iran. The authorities' hope was to hunt down the "leaders of the riots" and arrest them, according to the government security official, who declined to be identified. "They can follow you to the streets," said Mahdi Saremifar, a researcher with Holistic Resilience.