The Denver Gazette: An encrypted messaging app used by Mayor Mike Johnston to communicate, specifically about the illegal immigration crisis in Denver, is not authorized for use on city-owned devices, according to the city’s technology department.

“Technology Services governs the appropriate reviews, approvals, procurement, licensing, and management of all software and applications assets licensed by the city,” said Amanda Weston, a spokesperson for Denver Technology Services. “Signal is not an approved city application for city-issued devices. It is not prohibited on personal devices.”

Application downloads on city-issued devices can be prevented when necessary, Weston added.

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