As investigations continued into the massive data breach linked to Austin-based software company SolarWinds, experts say the attack could lead to long-term changes in cybersecurity policies and procedures for government entities and private companies alike. News of the cyberattack broke on Dec. 13, with Reuters news service reporting that a sophisticated hacking group backed by a foreign government might have stolen information from U.S. government agencies, including email traffic. The breach appears to have affected nearly every level of government, as well as potentially hundreds of private...