Scott Burns, a former employee of information and communications technology provider Blue Chip, was sentenced to 10 months in prison for taking down the computers of British airline Jet2.com Limited (aka Jet2) for over 12 hours. The 27-year-old worked for Blue Chip on the Jet2 account until December 2017, when he moved to another company, however, the disgruntled ex-employee decided to illegally access the airline’s network twice during January 2018 after leaving the ICT provider. Jet2 is one of the largest airlines in the United Kingdom and a Dart Group PLC subsidiary.
Source: https://www.bleepingcomputer.com/news/security/former-it-employee-jailed-for-taking-down-airline-systems/