The U.S. Cybersecurity and Infrastructure Security Agency highlighted how established security recommendations could have stopped last year's SolarWinds cyberattack, Reuters reports. In a letter to U.S. Sen. Ron Wyden, D-Ore., the CISA said had victims configured their firewalls to block outbound connections from the servers running SolarWinds, it "would have neutralized the malware," adding those who did so avoided the attack.