It's time to worry about the next big cyberthreat: #Killware. And it's just as bad as it sounds. The Colonial Pipeline #ransomware attack in April galvanized the public’s attention because of its consumer-related complications, including long lines at gas stations, Homeland Security Secretary Alejandro Mayorkas said in an interview with USA TODAY's Editorial Board last week. Fortunately, he added, there was a cyber incident that did not succeed: An attack on the Oldsmar, Florida, water system in February that was intended to distribute contaminated water to residents, "and that should have gripped our entire country,” Mayorkas said. Mayorkas and cybersecurity experts said the Oldsmar intrusion was one of many indications that malicious hackers increasingly are targeting critical parts of the nation's infrastructure in ways that could injure or even kill people. "The attacks are increasing in frequency and gravity, and cybersecurity must be a priority for all of us,” he said.