Ib Daim Ntawv Teev Npe ntawm Cov Ntaub Ntawv Xev Npe Cov Ntaub Ntawv Sawm
Cov ntaub ntawv khaws cia yog ib txoj hauv kev uas muaj kev cuam tshuam los ntawm cov ntaub ntawv los ntawm cov ntaub ntawv los sis cov ntaub ntawv cov ntaub ntawv ntawm cov ntaub ntawv ntawm tus tsav nyuab los yog lwm qhov chaw cia khoom.
Cov kev qhia txog kev ceev faj siv kuj yog hu ua cov ntaub ntawv kev rho tawm , cov ntaub ntawv so , kev siv cov txheej txheem , thiab cov ntaub ntawv siv los so .
Feem ntau cov kev qhia txog kev puas tsuaj pab txhawb ntau txoj kev kho cov ntaub ntawv.
Ceeb Toom: Technically, lwm txoj kev rhuav tseg cov ntaub ntawv tsis raws li software overwriting kuj raug xa mus rau cov ntaub ntawv kev kho cov ntaub ntawv, tiam sis feem ntau lub sij hawm lub sij hawm xa mus rau cov kev siv software raws li kev rho tawm cov ntaub ntawv.
Daim Ntawv Teev Npe Cov Ntaub Ntawv Xa Cov Ntaub Ntawv
Ntawm no yog ob peb yam ntaub ntawv kho mob uas siv los ntawm cov ntaub ntawv kev rhuav tshem cov ntaub ntawv thiab, thaum uas muaj feem xyuam, lub koom haum lossis tus neeg tau txais kev lees paub nrog qhov qauv:
- Ruaj Ntseg Lwv
- DoD 5220.22-M (US Department of Defense)
- NCSC-TG-025 (US National Security Agency)
- AFSSI-5020 (US Air Force)
- AR 380-19 (US Army)
- NAVSO P-5239-26 (US Navy)
- RCMP TSSIT OPS-II (Canada)
- CSEC ITSG-06 (Canada)
- HMG IS5 (UK)
- ISM 6.2.92 (Australia)
- NZSIT 402 (New Zealand)
- VSITR (Yelemees)
- GOST R 50739-95 (Russia)
- Gutmann (Peter Gutmann)
- Schneier (Bruce Schneier)
- Pfitzner (Roy Pfitzner)
- Random ntaub ntawv
- Sau xoom
Feem ntau cov ntaub ntawv ntawm kev puas ntsoog los kuj tseem qhia rau koj tus kheej cov ntaub ntawv kho mob nrog xijpeem sau txog tus qauv thiab cov kis ntawm koj xav tau.
Cov ntaub ntawv uas siv cov kev zom cov ntaub ntawv zoo tshaj?
Overwriting ib los yog ntau cov ntaub ntawv, los yog tag nrho cov tsav nyuaj, tsuas yog ib zaug nrog ib tus neeg xwb, yuav tsum tiv thaiv cov software raws li cov ntaub ntawv rov los ntawm cov ntaub ntawv rov qab los ntawm ib qho nyuaj. Qhov no yuav luag universally pom zoo rau.
Raws li tej cov neeg tshawb nrhiav 1 , ib zaug xwb overwriting ntawm cov ntaub ntawv yog txaus kom tiv thaiv txawm tias, kho vajtse raws li cov txheej txheem ntawm extracting cov ntaub ntawv los ntawm nyuaj drives qab hau tias feem ntau cov ntaub ntawv kev tu tsiaj txhu tshaj tua. Qhov no tsis yog li ntawd tau pom zoo.
Cov kws kho mob feem ntau tau pom zoo tias Txuj Lom Lwv Zog yog qhov zoo tshaj rau txoj kev sau tus tsav tag nrho hauv kev sib tw. Qhov yooj yim sau Sau Xoom txoj kev ua tiav qhov tseem ceeb tshaj plaws, albeit npaum li cas qeeb qeeb.
Siv lub tswv yim los tshem tawm cov ntaub ntawv yog tiag tiag cia li sau lwm cov ntaub ntawv nyob rau saum koj cov ntaub ntawv yav dhau los kom cov ntaub ntawv tau hloov nrog ib yam dab tsi useless. Cov ntaub ntawv tshiab no yeej zoo kawg nkaus thiab tsis tau muaj ib yam ntawm koj tus kheej cov ntaub ntawv, uas yog vim li cas ones, zeros, thiab random cim siv.
Yog hais tias muaj ib qho overwrite txaus, vim li cas thiaj muaj ntau txoj kev tu cov ntaub ntawv?
Raws li kuv tau hais los saum no, tsis yog txhua tus pom zoo rau ib qho software raws li cov ntaub ntawv khaws cia uas yuav tiv thaiv tau txhua txoj kev rov qab tau cov ntaub ntawv.
Vim hais tias kev tshaj lij, kev kho raws li cov tswv yim ntawm extracting cov ntaub ntawv los ntawm nyuaj drives nyob, ob peb tsoom fwv cov koom haum thiab soj ntsuam ntawm tau ntawm nws tus kheej tau tsim ib txoj kev ntawm overwriting cov ntaub ntawv uas, raws li lawv cov kev tshawb fawb, yuav tsum tiv thaiv cov kev tshaj tawm txoj kev rov los ntawm kev ua haujlwm.
Nws txhais li cas rau \ & # 34; xyuas qhov sau & # 34 ;?
Yog tias koj nyeem ntau ntxiv txog cov ntaub ntawv ntawm tus kheej cov ntaub ntawv, koj yuav pom tias feem ntau ntawm lawv khiav qhov kev kuaj xyuas tom qab sau tus cim rau cov ntaub ntawv, lub ntsiab lus tias nws saib xyuas tus tsav kom ntseeg tau tias cov ntsiab lus tau ua ntawv sau.
Hauv lwm lo lus, cov ntaub ntawv sau ua pov thawj yog zoo li "Kuv puas yog tiag tiag ua qhov no?" cov kev kos.
Qee cov ntaub ntawv so software cov cuab yeej yuav cia koj hloov cov xov tooj ntawm cov sij hawm nws xyuas tias cov ntaub ntawv tau ploj mus. Ib txhia yuav tshawb xyuas ib zaug thaum kawg ntawm tag nrho cov txheej txheem (tom qab tag nrho cov kis tau tiav lawm), thaum luag pom tseeb tias tom qab txhua zaus.
Txheeb xyuas tag nrho tsav tom qab txhua tshooj dhau los kom paub meej tias cov ntaub ntawv raug muab tshem tawm yuav yeej siv sijhawm ntev dua vim tias nws tau los xyuas nws ntau tshaj ib zaug thaum kawg.
[1] Craig Wright, Dave Kleiman, thiab Shyaam Sundhar RS hauv Overwriting Hard Drive Cov Ntaub Ntawv: Cov Kev Sib Coj Zoo Tshaj Plaws muaj nyob ntawm no [PDF].