th ▁Cir . ▁ 1 9 8 2 ). ▁ ▁A ▁common ▁attack ▁on ▁digital ▁evidence ▁is ▁that ▁digital ▁media ▁can ▁be ▁easily ▁alter ed . ▁However , ▁in ▁ 2 0 0 2 ▁a ▁US ▁court ▁ruled ▁that ▁" the ▁fact ▁that ▁it ▁is ▁possible ▁to ▁alter ▁data ▁contained ▁in ▁a ▁computer ▁is ▁plain ly ▁ins u fficient ▁to ▁establish ▁un tr ust worth iness " ▁( US ▁v . ▁B onal lo , ▁ 8 5 8 ▁F . ▁ 2 d ▁ 1 4 2 7 ▁- ▁ 1 9 8 8 ▁- ▁Court ▁of ▁App e als , ▁ 9 th ). ▁ ▁Nevertheless , ▁the ▁" more ▁compreh ensive " ▁foundation ▁required ▁by ▁Sch ol le ▁remains ▁good ▁practice . ▁The ▁American ▁Law ▁Re ports ▁lists ▁a ▁number ▁of ▁ways ▁to ▁establish ▁the ▁compreh ensive ▁foundation . ▁It ▁suggests ▁that ▁the ▁pro ponent ▁demonstrate ▁" the ▁reli ability ▁of ▁the ▁computer ▁equipment ", ▁" the ▁manner ▁in ▁which ▁the ▁basic ▁data ▁was ▁initially ▁entered ", ▁" the ▁measures ▁taken ▁to ▁ensure ▁the ▁accuracy ▁of ▁the ▁data ▁as ▁entered ", ▁" the ▁method ▁of ▁storing ▁the ▁data ▁and ▁the ▁pre ca utions ▁taken ▁to ▁prevent ▁its ▁loss ", ▁" the ▁reli ability ▁of ▁the ▁computer ▁programs ▁used ▁to ▁process ▁the ▁data ", ▁and ▁" the ▁measures ▁taken ▁to ▁verify ▁the ▁accuracy ▁of ▁the ▁program ". ▁ ▁In ▁its ▁turn ▁it ▁gave ▁rise ▁to ▁a ▁bre ed ▁of ▁commercial ▁software ▁technology ▁solutions ▁designed ▁to ▁preserve ▁digital ▁evidence ▁in ▁its ▁original