The Age said the 16-year-old - who can not be named for legal reasons - broke into Apple's mainframe several times over the course of a year, using a system of "computerised tunnels and online bypassing systems". He also allegedly shared the stolen info with his friends on WhatsApp.
Apple detected the security breach and informed the FBI who shared the information with the Australian federal police.
The AFP raided the boy's family home previous year and found two Apple laptops with serial numbers that matched those of the devices used in the hacking.
According to reports, the boy was able to download internal files and access customer accounts. "Further analysis found that the schoolboy successfully accessed authorised keys", added the report.
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The Age of Melbourne said the boy tried to cover his tracks by using a virtual private network (VPN) to mask his location - and kept what he copied in a folder called "hacky hack hack". The serial numbers of the devices matched those of the devices that had accessed the internal systems, a prosecutor told the court. According to his lawyer, the teen is a well-known figure in the hacking community.
"An Apple spokesperson said that, "[We] want to assure our customers that at no point during this incident was their personal data compromised".
The boy's name could not be made public because he was a juvenile offender.
Business Insider has contacted Apple for comment.
Apple said in a statement Friday that its teams "discovered the unauthorised access, contained it, and reported the incident to law enforcement". It reports that he had hacked into the firm because he was a huge fan and dreamed of working there.