UCLA Health (at the University of California) was violated following a cyber attack and data was stolen from about 4.500.000 people registered on the site. 
The University said Friday that a network containing personal and medical information was breached by unknown hackers, who managed to steal names, addresses, social security numbers and medical data – such as condition, medications, tests and test results.
However, the university said there was "no evidence" that the data had been tampered with, although "they could not rule out the possibility."
The system health, operates four hospitals in Los Angeles, California and is currently working with the FBI and external IT specialist units to determine the cause of the breach, which occurred in October of last year. THE infringement discovered on May 5, 2015.
It is unknown at this time what he will do after leaving the post.
UCLA Health confirmed that the data was not encrypted, which means that the data could be used directly by malicious users.
