[1] According to Telstra, millions of information found on the central systems of telecommunications companies provides greater opportunities for hackers as well as foreign spy agencies.
[2] These vast information highly appeals to hackers, and so, comprehensive measures need to be implemented to keep these data secure.
[3] Telstra has given their word of honor towards contributing to the creation of centralized systems.
Source: http://www.businessspectator.com.au/news/2015/1/29/technology/telstra-warns-metadata-honeypot