00331nam a2200121   4500000000100000000000100001008004100002260002800043100002600071700001800097700002100115245007300136       2022                            d  bOxford University Press1 aMichael Fischerkeller1 aEmily Goldman1 aRichard Harknett00aCyber Persistence Theory: Redefining National Security in Cyberspace