Content Security Policy Level 2 publication history Date Status 15 December 2016 Recommendation 8 November 2016 Proposed Recommendation 21 July 2015 Candidate Recommendation Snapshot 19 February 2015 Candidate Recommendation Snapshot 3 July 2014 Last Call Working Draft 11 February 2014 Working Draft 4 June 2013 Working Draft 13 December 2012 Working Draft