A Nigerian national has been charged with a cyber-attack on Los Angeles County employees that compromised the personal information of over 756,000 people.

The attack took place on May 13, 2016, when the attacker sent a phishing email to over 1,000 LA County employees from several departments. 108 of the employees provided the hacker with his or her user name and password that allowed the hacker to gain access to their accounts, which included confidential patient an client information.

The compromised data included names, addresses, dates of birth, Social Security numbers, financial information and medical information. LA County is offering affected individuals with free credit and identity-theft monitoring.