Meanwhile, Russia-linked accounts retweeted candidate Hillary Clinton's posts just under 50,000 times, Twitter discloses in response to a Senate committee inquiry.
In the year since his election, Donald Trump has used Twitter as an official White House channel for everything from policies and praise to bullying and brinksmanship.
Some of the biggest stories this year had the world talking about cybersecurity breaches, fake news, Uber's chaos and Apple's iPhone X.
Facebook's lawyer tells US senators the presidential candidates bought millions in ads leading up to the election.
The social network says the ad spending was north of $100,000.
In today's big tech news, Samsung's co-CEO raises leadership issues, China steps up cryptocurrency regulation and Hillary Clinton's tweets create a stir.
Verrit was hacked almost immediately after Hillary Clinton tweeted about it.
Joel Benenson, a Democratic pollster and former chief strategist to Hillary Clinton, will conduct research for the Chan Zuckerberg Initiative, according to Politico.
Michael Daniel spent four years working on cybersecurity for the White House. But he knows there's much more to be done.
The former US presidential candidate says the email scandal, the rise of fake news and supposed Russian hacking are all reasons she lost the election.
Fueled by the success of the 2016 presidential race, Russians will be back to hack future US elections, the former director of national intelligence predicts.
Commentary: In congratulating new French President Emmanuel Macron on Twitter, the losing US Democratic candidate can't resist sniping at the media.
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