Cybersecurity investigators find at least 30 people had their phones targeted with Israeli-made government-sponsored spyware.
The army overthrew an elected government in 2014 and Prayuth Chan-ocha, the coup leader, was named prime minister after a 2019 general election put in power a military-backed political party.
The movement's demonstrations attracted up to 30,000 people in Bangkok, with gatherings in other major cities and at universities.The Pegasus spyware is known for "zero-click exploits" which means it can be installed remotely onto a target's phone, without the target having to click any links or download software.
The reports by Citizen Lab and iLaw do not accuse any specific government actor but say the use of Pegasus indicates the presence of a government operator.