Hungarian police arrested a young hacker because he discovered and exploited serious vulnerabilities in the systems of the Magyar Telekom, the major Hungarian telecommunication company. The hacker is facing up to 8 years in prison. In April 2018, in April 2018 the hacker found a serious security vulnerability in the website of the telco company, he exploited the issue to penetrate the telecommunications network. The Hungarian youngster first reported the flaw the company that invited him to a meeting to discuss the possibility to let him test its systems. The boy went to Budapest for the meeting, but the company did not permit him to conduct further tests.”]
Source: https://securityaffairs.co/wordpress/80610/breaking-news/magyar-telekom-hack.html