▁E ff ort s ▁ ▁Append ices ▁ ▁Data ▁san it ization ▁Do D ▁ 5 2 2 0 . 2 2 - M ▁is ▁sometimes ▁c ited ▁as ▁a ▁standard ▁for ▁san it ization ▁to ▁counter ▁data ▁rem an ence . ▁ ▁The ▁N IS P OM ▁actually ▁covers ▁the ▁entire ▁field ▁of ▁government – indust rial ▁security , ▁of ▁which ▁data ▁san it ization ▁is ▁a ▁very ▁small ▁part ▁( about ▁two ▁paragraph s ▁in ▁a ▁ 1 4 1 - page ▁document ). ▁Furthermore , ▁the ▁N IS P OM ▁does ▁not ▁actually ▁specify ▁any ▁particular ▁method . ▁ ▁Stand ards ▁for ▁san it ization ▁are ▁left ▁up ▁to ▁the ▁C ogn iz ant ▁Security ▁Author ity . ▁ ▁The ▁Def ense ▁Security ▁Service ▁provides ▁a ▁Clear ing ▁and ▁San it ization ▁Matrix ▁( C & SM ) ▁which ▁does ▁specify ▁methods . ▁ ▁As ▁of ▁the ▁June ▁ 2 0 0 7 ▁edition ▁of ▁the ▁D SS ▁C & SM , ▁over writing ▁is ▁no ▁longer ▁acceptable ▁for ▁san it ization ▁of ▁magnetic ▁media ; ▁only ▁deg aus sing ▁or ▁physical ▁destruction ▁is ▁acceptable . ▁ ▁References ▁ ▁External ▁links ▁ ▁E O - 1 2 8 2 9 ▁over view ▁(" National ▁Indust rial ▁Security ▁Program ") ▁ ▁E O - 1 2 8 2 9 ▁PDF ▁ ▁N IST ▁News ▁Archive ▁ 2 0 1 4 - 1 2 - 1 8 ▁ ▁Category : Est ab lish ments ▁by ▁United ▁States ▁executive ▁order ▁Category : Un