MSpy bills itself as a way to monitor the phones of children.
It applies to ads about elections, or a laundry list of national political issues.
It uses the information to put users in interest groups, The Wall Street Journal reports.
A partnership with censorship-evading experts at Psiphon aims to keep the service going everywhere.
The company takes down fake accounts associated with two separate efforts, though the Kremlin denies involvement.
Also: How it all fits in with a larger campaign to influence elections.
A Google user says the company misled him and other users.
You might not really understand how encrypted messaging works, and you're not alone.