THE TIGHTENING NOOSE:

Special counsel Robert S. Mueller III has added a veteran cyber prosecutor to his team, filling what has long been a gap in expertise and potentially signaling a recent focus on computer crimes.

Ryan K. Dickey was assigned to Mueller's team in early November from the Justice Department's computer crime and intellectual-property section, said a spokesman for the special counsel's office. [...]

Mueller's work has long had an important cybersecurity component -- central to the probe is Russia's hacking of Democrats' emails in an effort to undermine confidence in the U.S. electoral system and help Trump win. The original FBI counterintelligence probe was launched in part because a Trump campaign adviser was said to have told an Australian diplomat that Russia had emails that could embarrass Democrats, and in July 2016, private Democratic messages thought to have been hacked by Russia began appearing online.

Mueller also is in possession of information from Facebook about politically themed advertisements bought through Russian accounts.

Legal analysts have said that one charge Mueller might pursue would be a conspiracy to violate the Computer Fraud and Abuse Act, if he can demonstrate that members of Trump's team conspired in Russia's hacking effort to influence the election.

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