The government websites and the websites used by the FBI in the UK were targeted by a group of teenage hackers in a cyber attack.
They also targeted the heavily used” Home Office website which provides information about various subjects including passports and immigration back in 2013.
All the members of the group were identified in the investigation and then were charged with various charges.
Source: https://www.birminghammail.co.uk/news/solihull-teenager-carried-out-cyber-9880001
"id": "UKH222823422",
"linkid": "uk-home-office",
"type": "Cyber Attack",
"date": "08/2015",
"severity": "100",
"impact": "6",
"explanation": "Attack threatening the economy of a geographical region"