This is not only a large-scale invasion of privacy. In times of global conflict, this kind of intelligence is a gold mine for spies. It "could be exploited by hostile actors to facilitate hybrid activities to harm the democratic society and undermine the decision-making capability of a state," says Kiri Peres from Helsinki-based think tank Hybrid CoE.
It seems “only logical,” she added, that China and Russia would use advertising data for such purposes.