article_snippet: State Department computers were compromised by intruders thought to be working from inside Russia .
article_snippet: Cybersecurity officials at State believe Russian hackers are to blame but described the breach of Russian hackers networks only as 'activity of concern.'
article_snippet: ABC News reported that the cyber intrusion is one of the most serious in the agency's history.
article_snippet: But State framed the cyber intrusion is one of the most serious in the agency's history as a 'planned outage' and a routine 'upgrade' to the cyber intrusion is one of the most serious in the agency's history digital security systems, blocking the cyber intrusion is one of the most serious in the agency's history employees from sending outside emails and shuttering their Web browsers for an unspecified stretch of time that could last for days. '
article_snippet: This isn't the first such outage to hit America's diplomatic nerve center: The same kind of event happened once in November when The U.S. State Department carried out what The U.S. State Department called an 'upgrade' following an October cyber attack.
article_snippet: Hackers have run roughshod over computer servers in the executive branch of the U.S. government in recent years, targeting the White House on a regular basis.
article_snippet: In October, following an outage covering much of the Executive Office of the President, the White House Press Secretary Josh Earnest told reporters it should 'not be particularly surprising' that 'there are many people around the world who would love to gain greater insight into the activities of the United States government by collecting information from the White House network.'
article_snippet: Many did find it surprising, however, to hear White House Press Secretary Josh Earnest acknowledge that the computer infrastructure of 1600 Pennsylvania Avenue is 'subject to daily cyberattacks, or at least efforts to infiltrate the computer infrastructure of 1600 Pennsylvania Avenue.'
article_snippet: The FBI, the NSA and the Secret Service were all involved in an investigation, with insiders telling news organizations that –
article_snippet: as with Friday's State Department trouble – Russian hackers were the most likely suspects.
article_snippet: And a months-long sustained cyber attack on JP Morgan Chase last summer also originated in Russia, security officials believe, and may have also targeted as many as nine other banks.
article_snippet: Russia is still angry at the Obama administration for imposing tough eceonimc sanctions on Russia's oligarchs following President Vladimir Putin's annexation of Crimea .
highlights_snippet: Not the first time America's diplomatic nerve center has been compromised .
  
highlights_snippet: White House also had sustained cyber attacks last year .
  