05 August 2008

AU - New Filter Test by Australian Government Shows Filter Effectiveness

(Filtering Facts)
The Australian Communications and Media Authority released a report on Closed environment testing of ISP-level internet content filtering.  This report presents the findings of the closed environment testing of ISP-level filters conducted in 2008. The trial was conducted in response to a ministerial direction received in June 2007. Among the report's findings: Successful blocking (the proportion of illegal and inappropriate content that should have been blocked that was successfully blocked) was between 88% and 97% with most achieving over 92%. The median rate of successful blocking was improved from the previous trial. Overblocking (the proportion of content that was blocked that should not have been blocked) was between 1% and 6%, with most falling under 3%. The median overblocking rate was significantly improved from the previous trial.