By Marcos Colón

December 14, 2016

On Wednesday Yahoo disclosed yet another data breach that took place 2013 and impacted more than 1 billion user accounts.

This revelation comes just months following a separate breach that occurred in 2014 and affected 500 million accounts.

After law enforcement provided the company with data files that a third party claimed was Yahoo user data, the company further analyzed the information with the help of forensic experts.

“Based on further analysis of this data by the forensic experts, we believe an unauthorized third party, in August 2013, stole data associated with more than one billion user accounts,” Yahoo CISO Bob Lord said in a statement released Wednesday. “We believe this incident is likely distinct from the incident we disclosed on September 22, 2016.”

The company is currently notifying “potentially affected users,” and are requiring users to change their passwords.