Yuav Ua Li Cas Tshem Tawm Metadata ntawm Cov Ntaub Ntawv
Introduction
Metadata, feem ntau piav raws li "cov ntaub ntawv hais txog cov ntaub ntawv," yog ntaub ntawv uas muab cov ntsiab lus hais txog ib cov ntaub ntawv tshwj xeeb. Nws tuaj yeem muab kev nkag siab rau ntau yam ntawm cov ntaub ntawv, xws li nws hnub tsim, tus sau, qhov chaw, thiab lwm yam. Thaum metadata ua haujlwm rau ntau lub hom phiaj, nws tseem tuaj yeem ua rau muaj kev pheej hmoo ntawm kev ceev ntiag tug thiab kev nyab xeeb, tshwj xeeb tshaj yog thaum sib koom cov ntaub ntawv uas muaj cov ntaub ntawv rhiab heev. Hauv tsab xov xwm no, peb yuav tshawb xyuas seb cov metadata yog dab tsi thiab yuav ua li cas tshem nws ntawm cov ntaub ntawv mus rau tiv thaiv kev ceev ntiag tug thiab kev ruaj ntseg.
Metadata yog dab tsi?
Thaum koj ntes ib daim duab lossis tsim ib daim ntawv, ntau cov ntsiab lus yuav raug muab tso rau hauv cov ntaub ntawv. Piv txwv li, ib daim duab thaij nrog lub xov tooj smartphone yuav muaj cov metadata qhia cov cuab yeej siv, hnub thiab sijhawm ntawm kev ntes, thiab txawm tias thaj chaw nyob yog tias GPS tau qhib. Ib yam li ntawd, cov ntaub ntawv thiab lwm cov ntaub ntawv yuav suav nrog cov metadata uas qhia txog cov software siv los tsim lawv, tus sau lub npe, thiab keeb kwm kho dua tshiab.
Txawm hais tias metadata tuaj yeem pab tau rau kev teeb tsa thiab tswj cov ntaub ntawv, nws tuaj yeem ua rau muaj kev pheej hmoo thaum sib qhia cov ntaub ntawv rhiab heev. Piv txwv li, sib koom ib daim duab uas muaj cov ntaub ntawv qhov chaw tuaj yeem cuam tshuam tus kheej ntiag tug, tshwj xeeb tshaj yog thaum sib koom hauv online. Yog li ntawd, nws yog ib qho tseem ceeb kom tshem tawm cov metadata los ntawm cov ntaub ntawv ua ntej sib qhia lawv kom tsis txhob muaj kev cuam tshuam cov ntaub ntawv rhiab heev.
Tshem tawm Metadata
Ntawm Windows systems, koj tuaj yeem siv cov cuab yeej zoo li ExifTool tshem tawm cov metadata ntawm cov ntaub ntawv yooj yim. Tom qab txhim kho ExifTool GUI, tsuas yog thauj cov ntaub ntawv, xaiv cov metadata kom tshem tawm, thiab ua tiav cov txheej txheem tshem tawm. Thaum ua tiav, cov ntaub ntawv yuav pub dawb ntawm ib qho kev kos metadata, kom ntseeg tau tus kheej thiab kev nyab xeeb thaum sib koom.
Linux cov neeg siv kuj tuaj yeem siv ExifTool tshem tawm cov metadata ntawm cov ntaub ntawv. Los ntawm kev siv lub davhlau ya nyob twg thiab nkag mus rau cov lus txib yooj yim, cov neeg siv tuaj yeem tshem tawm cov ntaub ntawv ntawm tag nrho cov metadata, tawm hauv qab cov ntawv huv si npaj rau kev sib koom. Cov txheej txheem no ncaj nraim thiab ua tau zoo, muab cov neeg siv kev thaj yeeb nyab xeeb thaum sib koom cov ntaub ntawv uas muaj cov ntaub ntawv rhiab heev.
xaus
Hauv kev xaus, metadata plays lub luag haujlwm tseem ceeb hauv kev muab cov ntsiab lus thiab lub koom haum rau cov ntaub ntawv tab sis kuj tuaj yeem ua rau muaj kev pheej hmoo tsis pub lwm tus paub thiab kev nyab xeeb thaum sib koom ua tsis tiav. Los ntawm kev nkag siab tias metadata yog dab tsi thiab yuav ua li cas tshem tawm ntawm cov ntaub ntawv siv cov cuab yeej xws li ExifTool, cov neeg siv tuaj yeem tiv thaiv lawv tus kheej thiab kev nyab xeeb thaum sib koom cov ntaub ntawv online. Txawm hais tias nyob rau Windows lossis Linux, cov txheej txheem ntawm kev tshem tawm cov metadata yog qhov yooj yim thiab ua kom ntseeg tau tias cov ntaub ntawv tseem ceeb tseem ceeb.
Rau cov neeg nrhiav cov cuab yeej ntiag tug thiab kev nyab xeeb ntxiv, kev xaiv zoo li Gophish rau phishing simulations thiab Shadowsocks thiab HailBytes VPN rau kev txhim kho kev ceev ntiag tug yog tsim nyog tshawb nrhiav. Nco ntsoov ceev faj thiab saib xyuas kev ceev ntiag tug thaum sib koom cov ntaub ntawv online, thiab ib txwm tshem tawm cov metadata kom txo tau cov kev pheej hmoo.
