Tom Ridge: Cyberattacks are a permanent risk to individuals and countries and companies. Companies that control the nation’s financial sector, energy resources, transportation and other vital infrastructure are just as vulnerable as federal agencies and political party emails, he says. Ridge is chairman of Ridge Global, a Washington-based cyber protection advisory firm. He was named by President George W. Bush to head the Department of Homeland Security, created after the 9/11 attacks. Ridge: “Cybersecurity is the most significant governance challenge for the public and private sector””]