US Patent 9740870 Access control

An access control technology is described. Ownership control information is stored for an object in a computing system. Access control to objects in the computing system is based in part on accounts having ownership control of objects in the computing system. A first account with ownership control of the object is identified. Ownership control of the object is changed to a second account upon detection of a first security event. Ownership control of the object is restored to the first account upon detection of a second security event using the stored ownership control information.