Commentators have shown how a 'culture of security' ushered in after the terrorist attacks of 11 September 2001 has involved exceptional legal measures and increased recourse to secrecy on the basis of protecting public safety and safeguarding national security. In this context, scholars have largely been preoccupied with the ways that increased security impinges upon civil liberties. While secrecy is justified on public interest grounds, there remains a tension between the need for secrecy and calls for openness, transparency and disclosure.

In law, secrecy has implications for the...