Yahoo on Tuesday released an update to its 2013 breach, notifying users that all 3 billion accounts in existence at the time were compromised.

Yahoo’s latest SEC filing includes confirmation that it knew attackers were on its network in 2014 and stole information on 500 million accounts.

Yahoo confirmed that in 2014 state-sponsored hackers stole information associated with 500 million accounts from its network.

Yahoo is expected to confirm a data breach that exposed hundreds of millions of credentials dating back to 2012.