From today, every phone call you make, every text message you send and every email you write will compulsorily be tracked by the government agencies under a new metadata retention scheme. The law has allegedly been implemented to protect the country against organized terrorist and criminals, like every government agencies including the U.S. intelligence agency NSA and British intelligence agency GCHQ claim. Many believe it is the biggest invasion of privacy in the history of Australia and a massive security risk as well. The Australian government emphasized that the type of data collected is only, and not the content of calls and messages.
Source: https://thehackernews.com/2015/10/data-retention-law.html