Donald Trump Jr. released documents to a congressional investigation that revealed he exchanged private direct messages via Twitter with the WikiLeaks account.
The messages began in September 2016 and continued with some breaks until July 2017, according to The Atlantic.
Alan Futerfas, an attorney for Trump Jr., rejected the suggestion that his client had done anything wrong.
"Over the last several months, we have worked cooperatively with each of the committees and have voluntarily turned over thousands of documents in response to their requests," Futerfas stated. "Putting aside the question as to why or by whom such documents, provided to Congress under promises of confidentiality, have been selectively leaked, we can say with confidence that we have no concerns about these documents and any questions raised about them have been easily answered in the appropriate forum."
In July 2016, WikiLeaks released emails obtained by hackers from the Democratic National Committee. The emails revealed Democratic Party officials disparaging Independent Sen. Bernie Sanders of Vermont, Hillary Clinton's rival for the nomination in the presidential primaries.
U.S. intelligence agencies allege that these emails were published at the request of the Russian government.
On Oct. 3, 2016, WikiLeaks wrote to Trump Jr. asking him to promote a story featuring comments by Clinton that she wanted to "just drone" WikiLeaks founder Julian Assange.
"Already did that earlier today," Trump Jr. responded. "It's amazing what she can get away with."
Trump Jr. did not respond to a number of messages WikiLeaks sent him.
"Hey Don," WikiLeaks wrote Oct. 21, 2016. "We have an unusual idea. Leak us one or more of your father's tax returns."
The message went on to provide several reasons why it would be in the Trump family's interest to release the tax returns. However, Trump Jr. did not respond.
On Nov. 8, 2016, election day, WikiLeaks proposed to Trump Jr. that his father should challenge the election result if he lost.
"The discussion can be transformative as it exposes media corruption, primary corruption, PAC corruption, etc," added WikiLeaks.
Again, Trump Jr. did not respond.
Another message from the group sent Dec. 16, 2016, included a suggestion that President Donald Trump name Assange as Australian ambassador to Washington.
The latest message from the WikiLeaks account came on July 11, shortly after reports emerged that Trump Jr. met with a Russian lawyer in June 2016. WikiLeaks requested Trump Jr. allow them to leak emails related to the meeting. Trump Jr. did not respond, but published the emails himself.
The Guardian sought to contact WikiLeaks for comment, but the organization did not respond.
On Nov. 13, Trump Jr. published the entire chain of messages with WikiLeaks on his Twitter feed.