Cybersecurity incident — 2015-04-25 00:00:00
Affected organization: MasterCard Online Resources
Affected country: United States of America
Industry: Finance and Insurance
Event type: Disruptive
Event subtype: Message Manipulation
Motive: Undetermined
Actor: Gantengers Crew
Actor type: Hobbyist
Actor country: Indonesia

Indonesian hackers going with the group handle of Gantengers Crew deface the Online Resources domain of MasterCard (arm.mastercard.com).