Huge New York Times investigation on Russia's role in the elections, and Trump's upset victory: "The Perfect Weapon: How Russian Cyberpower Invaded the US." It's a riveting tic-tock narrative, and no doubt those in the intel/security biz will debate the contents.

An examination by The Times of the Russian operation — based on interviews with dozens of players targeted in the attack, intelligence officials who investigated it and Obama administration officials who deliberated over the best response — reveals a series of missed signals, slow responses and a continuing underestimation of the seriousness of the cyberattack.

The D.N.C.'s fumbling encounter with the F.B.I. meant the best chance to halt the Russian intrusion was lost. The failure to grasp the scope of the attacks undercut efforts to minimize their impact. And the White House's reluctance to respond forcefully meant the Russians have not paid a heavy price for their actions, a decision that could prove critical in deterring future cyberattacks.

The low-key approach of the F.B.I. meant that Russian hackers could roam freely through the committee's network for nearly seven months before top D.N.C. officials were alerted to the attack and hired cyberexperts to protect their systems. In the meantime, the hackers moved on to targets outside the D.N.C., including Mrs. Clinton's campaign chairman, John D. Podesta, whose private email account was hacked months later.

Even Mr. Podesta, a savvy Washington insider who had written a 2014 report on cyberprivacy for President Obama, did not truly understand the gravity of the hacking.