Cybersecurity incident — 2016-02-09 00:00:00
Affected organization: US Internal Revenue Service
Affected country: United States of America
Industry: Public Administration
Event type: Exploitive
Event subtype: Exploitation of Application Server
Motive: Financial
Actor: Undetermined
Actor type: Criminal
Actor country: Undetermined

The US Internal Revenue Service is the target of an attack able to steal the electronic tax-return credentials for 101,000 social security numbers. The attack is performed using credentials stolen from an external source.