If special counsel Robert Mueller’s report on Russian efforts to help President Trump’s 2016 campaign failed to answer all the questions from his Democratic rivals, it nonetheless made one point perfectly clear: the necessity of protecting themselves from foreign hackers.

Published in late April, the report detailed the Kremlin’s theft of “hundreds of thousands of documents” from the Democratic National Committee’s computer network and former presidential candidate Hillary Clinton’s campaign chairman, increasing pressure that has been building since U.S. intelligence agencies warned three years ago that Russia was attempting to sway the election.