South Korean police arrested two high-schoolers for hacking the Seoul public bike sharing service Ttareungyi
The two suspects met on Telegram and learned about cybersecurity while they executed the hack 
Teenagers Behind 4.62 Million Ttareungyi Data Breach Identified as Minors
Teenagers Behind 4.62 Million Ttareungyi Data Breach Identified as Minors Teenagers exploited weak authentication to access 4.62 million user records,
The Chosun Daily (www.chosun.com)
