Like many other tools in life, encryption can be used for good and bad things. It is used, for example, to protect hackers from eavesdropping on messages, credit card numbers, emails and more. However, encryption can also be considered negative because it can be used by the bad guys to send messages and information that law enforcement can not access.
This has been a point of contention among law enforcement agencies around the world who hold that for tech companies who use encryption in their consumer products makes it hard to stop the bad guys. However, it appears that the country's parliament in Australia has passed legislation that many refer to as the "anti-encryption law" that will force technology companies to decrypt private messaging apps.
Called "Assistance and Access Bill" This means that companies like WhatsApp and Signal need to integrate backdoors into their programs that allow law enforcement agencies to access the content of messages, if necessary. This was a similar request demanded by the FBI of Apple, in which the company refused to force law enforcement agencies to seek outside help.
In fact, Apple had submitted a detailed letter to the Australian government that had objected to the law in October, but it appears their warnings were unheard. It is not surprising that security experts around the world are against such backdoors, with the idea that if law enforcement agencies can access them, who will say then that hackers will not be able to find it at some point? ]. Read more about Hack, Legal, Privacy and Security.