Imagine the scenario: a private Canadian software company provides sophisticated technology to the Iranian government, allowing it to deny access in Iran to thousands of websites on account of their political or social content. How would the Canadian government respond? With outrage and condemnation, to be sure, and perhaps even with legal action (since such a commercial transaction might be in breach of sanctions legislation). But silence wouldn’t be an option. Yet silence is precisely the response the government has chosen when, instead of Iran, the country to which a Canadian company has reportedly provided censorship software is Pakistan. Faced with credible allegations that the Canadian firm Netsweeper delivered such software to the Pakistani government—and that such software is indeed being used to restrict access to independent human rights and media information in Pakistan—the Canadian government’s only response is to refuse to comment, citing “privacy constraints"...