Who may know what about whom, and on what terms.
Ontario law recognises a privacy tort for a highly offensive intentional intrusion into another's private affairs, without proof of economic loss.
Section 8 of the Charter protects a reasonable expectation of privacy; the state generally needs prior judicial authorisation to intrude on it.
The Court held that internet users have a reasonable expectation of privacy in the subscriber information linking their identity to their online activity, so police generally need judicial authorisation to obtain it from an internet service provider.
The Court of Appeal recognised a new privacy tort — intrusion upon seclusion — allowing recovery where a defendant intentionally intrudes on another's private affairs in a way a reasonable person would find highly offensive, even without proof of economic loss.