Chris Krebs, the former CISA director, has left his job at a security company to focus on fighting back against the Trump administration.Krebs was fired by Trump in November 2020 after disputing baseless claims about election rigging.He and his former employer, SentinelOne, were targeted in a Trump order titled 'Addressing Risks from Chris Krebs and Government Censorship.'The order accused Krebs of abusing his authority and engaging in censorship related to the 2020 election and COVID-19 pandemic.