The Washington Post is investigating a cyberattack on email accounts of some of its journalists, according to a source familiar with the matter and an internal memo reviewed by Reuters. The memo sent to Post employees by Executive Editor Matt Murray said the intrusion was discovered on Thursday and the newspaper immediately initiated an investigation.

Staffers at the Washington Post were told the intrusions compromised journalists' Microsoft accounts and could have granted the intruder access to work emails, the WSJ reported, c

The Washington Post is investigating a cyber attack on the email accounts of some journalists, prompting the newspaper to beef up its online security.