My last book, “Confront and Conceal,” detailed the secret American-br and Israeli-led cyber attacks on Iran’s nuclear program using the Stuxnet worm, a sophisticated self-replicating malware computer program aimed at the kind of industrial equipment that controls nuclear facilities, among other sites.br A Eureka Moment for Two Times Reporters: North Korea’s Missile Launches Were Failing Too Often -br By DAVID E. SANGERMARCH 6, 2017br WASHINGTON — Times Insider delivers behind-the-scenes insights into how news, features and opinion come together at .br In the Washington bureau, Bill Hamilton, who oversees national security reporting, turned his editing talents to helping us shape a narrativebr that mixed news, analysis and a long history of efforts to deal with a North Korean program that has bedeviled the last five presidents.br In documents and interviews, we found plenty of evidencebr that North Korea was a target; the hard scientific problem was determining whether the cyber and other electronic attacks — and not engineering incompetence or insiders working for the West — were actually responsible for the failed launches.br It also meant going through those discussions about the program again, this time with a new administrationbr whose key officials had barely had time to understand their new jobs, much less develop a Korea strategy.