A senior U.S. cybersecurity official

described adoption of some of Microsoft and Twitter’s security protocols as “disappointing” as part of a broadside against large technology companies’ approach to protecting user accounts. Jen Easterly, director of the Cybersecurity and Infrastructure Security Agency, said in a speech Monday that bad software and unsafe practices are facilitating ransomware attacks that are crippling the nation’s most essential services, spanning energy supply, food production, hospitals and schools.