[3] On July 30, 2021, Tau announced he is writing a book on the use of commercial data in U.S. government surveillance programs for Crown Publishing Group.
Tau began his journalism career at Politico as a news assistant to Ben Smith, helping him run his politics blog, before being made a fully-fledged reporter in 2011.
He left Politico in 2014 to join The Wall Street Journal as a White House reporter in time for the 2016 presidential election.
[7] After the election, Tau began writing about national security issues as Capitol Hill Correspondent for The Journal.
[10] Tau is considered among the lead writers at The Journal covering the investigation into Russian interference in the 2016 election and obstruction of justice by special counsel Robert S. Mueller III.