Hillary Clinton is being sued by the parents of two Americans who were killed in the 2012 Benghazi attack, for allegedly revealing their locations to the enemy in emails sent from an unsecured - and easily hacked - server.

The lawsuit alleges the former Secretary of State was directly responsible for the deaths of Sean Smith, a State Department communications specialist, and CIA contractor Tyrone Woods, two of four men who died on the night of September 11, 2012.

Smith's mother Patricia Smith and Woods' father Charles Woods are suing Clinton for wrongful death and negligence, but also for defamation and intentional infliction of emotional distress.

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Hillary Clinton is being sued by the parents of Sean Smith (left) and Tyrone Woods (right), who were both killed in the 2012 Benghazi attack

The suit claims that Clinton's 'extremely careless' handling of classified government data on a private email server also led to Smith and Woods' deaths in the terrifying attacks, which were later recreated in the movie 13 Hours.

The lawsuit references the Democratic presidential nominee's infamous email scandal multiple times, alleging that her 'reckless' use of a private server to handle classified information meant it was compromised.

'It is highly probable, given Defendant Clinton's history of reckless handling of classified information, that Defendant Clinton, as Secretary of State, sent and received information about Ambassador Christopher Stevens and thus the U.S. Department of State activities and covert operations that the deceased were a part of in Benghazi, Libya.

'This information was compromised from the second that it left Defendant Clinton's private email server and easily found its way to foreign powers including, but not limited to Russia, Iran, China and North Korea,' the lawsuit states.

'Having used a secret private email server that we now know was used to communicate with Ambassador Christopher Stevens with confidential and classified government information, and which we also now know was likely hacked by hostile adversaries such as Iran, Russia, China and North Korea aligning with terrorist groups, it is clear that Hillary Clinton allegedly negligently and recklessly gave up the classified location of the plaintiffs' sons, resulting in a deadly terrorist attack that took their lives,' Klayman said in a statement, the Boston Herald reports.

Sean Smith's mother Patricia addresses the Republican National Convention on July 18

Dorothy Narvaez-Woods (right), widow of former Navy SEAL Tyrone Woods, listens to Hillary Clinton testify before the House Select Committee on Benghazi October 22 last year

The suit also accuses Clinton of making defamatory statements to the media by saying the plaintiffs were lying when they said that she told them the attack was motivated by an anti-Muslim YouTube video, Mediate reports.

In the complaint, Larry Klayman, an attorney for the families, wrote: 'During her campaign for President, Defendant Clinton has negligently, recklessly, and/or maliciously defamed Plaintiffs by either directly calling them liars, or by strongly implying that they are liars, in order to protect and enhance her public image and intimidate and emotionally harm and silence them not to speak up about the Benghazi attack on at least four separate occasions.'

An emotional Patricia Smith addressed the crowd at the Republican National Convention last month, where she blamed Clinton for her only child's death.

'That night, we lost sons, brothers, fathers and husbands. We lost four brave Americans who made the ultimate sacrifice for the county they chose to serve and the American people lost the truth.

'For all of this loss, for all of this grief, for all of the cynicism the tragedy in Benghazi has wrought upon America, I blame Hillary Clinton.'

She added: 'I blame Hillary Clinton personally for the death of my son.'

Daily Mail Online has contacted a representative for Clinton for comment.