The flawed update from CrowdStrike Holdings Inc. (NASDAQ:CRWD), which led to a global IT outage, has attracted criticism from a leading U.S. cybersecurity official. What Happened: In a LinkedIn post on Saturday, Jen Easterly, director of the Cybersecurity and Infrastructure Security Agency, labeled the faulty software update as a “serious mistake.” The incident “was a huge deal with serious impacts on critical infrastructure operations across the world,” she stated, adding, “While it wasn’t malicious, it was a serious mistake, one for which CEO George Kurtz took full responsibility, apologized…