There are both federal and provincial laws on privacy.
There are specific circumstances where privacy is overridden, for instance, to protect the public and in police investigations. Court cases are public (Justice must be open and public) as are court sentences.
I see our sex offender registry can only be reviewed by law enforcement personnel, and it is a criminal offence to mis-use the information on the registry.
"Authority to notify the public of the release of high-risk offenders continues to be regulated under the Privacy Act Section 8(2)(m)."
Paragraph 8(2)(m) of the Privacy Act permits for the disclosure of personal information where, in the opinion of the head of the institution, the public interest in disclosure clearly outweighs any invasion of privacy that could result from the disclosure, or disclosure would clearly benefit the individual to whom the information relates. It is up to the head of the institution to determine whether the public interest outweighs the right to privacy.