Toronto police and RCMP officers deploying controversial “Stingray” surveillance technology over a two-month period swept up identifying cellphone data on more than 20,000 bystanders at malls, public parks and even a children’s toy store.
https://www.thestar.com/news/gta/2019/03/24/thousands-of-bystanders-caught-in-toronto-police-sweep-of-cellphone-data.html
April 4, 2018
The federal government has been loath to discuss the use of rogue cell phone surveillance devices in the US. But the Department of Homeland Security has finally acknowledged that such devices are likely in operation in Washington DC. This revelation comes by way of a letter to US Senator Ron Wyden dated March 26. In it, the DHS confirms it has detected cell site simulators near important government agencies.
https://www.extremetech.com/mobile/266878-us-government-confirms-unauthorized-cell-phone-surveillance-in-washington