Mansoor was detained again in March 2017, accused of using social media platforms to "publish false and misleading information". UN human rights experts considered his arrest and imprisonment "a direct attack on the legitimate work of human rights defenders in the UAE". In March 2018, after over a year of detention, much of it in solitary confinement, he was sentenced to ten years in prison and fined 1,000,000 Emirati dirham.
In 2019, it was revealed that Mansoor had been a target of Project Raven; a UAE clandestine surveillance and hacking operation, targeting other governments, militants and human rights activists critical of the UAE monarchy. Ahmed Mansoor was code named " Egret" in Project Raven, while another main target, Rori Donaghy, was code named "Gyro".
By June 2017 Project Raven had hacked into mobile device of Mansoor’s wife, Nadia, and given her the code name "Purple Egret".
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- Perraudin, Frances (16 April 2018). "Manchester campaigners want street named after Emirati activist". The Guardian. Retrieved 4 November 2018.
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- "UN rights experts urge UAE: "Immediately release Human Rights Defender Ahmed Mansoor"". Geneva: Office of the United Nations High Commissioner for Human Rights. 28 March 2017. Retrieved 4 November 2018.
- "UAE: Activist Ahmed Mansoor sentenced to 10 years in prison for social media posts". Amnesty International. 31 May 2018. Retrieved 4 November 2018.
- Inside the UAE’s secret hacking team of American mercenaries, by Christopher Bing and Joel Schectman, January 30, 2019, Reuters