WASHINGTON — Former chief information security officer (CISO) for acquisition and sustainment at the Department of Defense is headed back to the Pentagon — this time as DoD’s CISO — following her previous suspension from the department for allegedly disclosing classified data.Katie Arrington served as a state lawmaker for South Carolina and had an unsuccessful bid for Congress before taking her post in 2019 as the chief information officer for A&S during President Donald Trump’s first administration. She played an active role in standing up the department’s Cybersecurity Maturity Model Certification (CMMC) program before she was put on administrative leave...