The Washington Post was hacked for a third time in just a little under three years as intruders were able to gain access to the paper's servers.

According to TheWrap, just how much hackers were able to gain access to is not yet known, but employees were told to change their passwords as a security precaution. It is assumed that the hackers could possibly decrypt any passwords taken during the intrusion.

Security firm Mandiant says the server intrusions were only for a "relatively short duration," while Post spokeswoman Kris Coratti said they were still looking into the attack, but believed that hackers only had access for "a few days at most."

This latest attack has come only a couple months after The Washington Post was hacked by the Syrian Electronic Army.

That attack was much less coordinated and well done as the hackers were unable to gain access to the Post's servers, they only were able to change the websites to redirect visitors of the Post, TIME and CNN to the SEA home page until the problem was fixed.

TheWrap notes the Post was hit in a bigger attack back in 2011, when Chinese hackers hit the website and several other news sites, including The New York Times, Bloomberg, Associated Press and others.