iprototype yeTickTock esebenza ngokupheleleyo, equlathe iinxalenye ezipakishiweyo ezahlukeneyo
Iqela labaphandi kwiYunivesithi yeSizwe yaseSingapore kunye neYunivesithi yaseYonsei (eKorea) kutshanje ikhutshwe, abaye baphuhlisa indlela yokufumanisa ukusebenza kwe-microphone ifihlwe kwilaptop.
Ukubonisa ukusebenza kwe indlela esekelwe kwibhodi Raspberry Pi 4, amplifier kunye transceiver (SDR), iprototype ebizwa ngokuba yiTickTock yadityaniswa, evumela ukufumanisa ukusebenza kwe-microphone nge-malware okanye ispyware ukumamela umsebenzisi.
Indlela yokukhangela yokwenziwa ukufakwa kwe-microphone ifanelekile, ekubeni, kwimeko yekhamera yewebhu, umsebenzisi unokuvala ukurekhoda ngokuncamathela ikhamera, emva koko ukucima imakrofoni eyakhelwe-ngaphakathi kuyingxaki kwaye ayicaci ukuba iyasebenza kwaye xa ingasebenzi.
Indlela isekelwe kwinto yokuba xa imakrofoni isebenza, iisekethe ezihambisa imiqondiso yewotshi kwi-analog ukuya kwi-converter yedijithali ziqala ukukhupha umqondiso othile ongasemva onokuthi ubanjwe kwaye wahlulwe kwingxolo ebangelwa kukusebenza kwezinye iinkqubo. ubukho bemitha ye-electromagnetic ethile evela kwimakrofoni, kunokugqitywa ukuba ukurekhoda kuyenzeka.
Isixhobo sifuna ukulungiswa kwiimodeli ezahlukeneyo zelaptop, njengoko ubume bophawu olukhutshiweyo ubukhulu becala buxhomekeke kwitshiphu yesandi esetyenzisiweyo. Ukugqiba ngokuchanekileyo umsebenzi we-microphone, kwakuyimfuneko kwakhona ukusombulula ingxaki yokucoca ingxolo evela kwezinye iisekethe zombane kunye nokuqwalasela utshintsho kwisignali ngokuxhomekeke kunxibelelwano.
"Okokuqala, ezi zisombululo zifuna ukuba abasebenzisi bathembele ekuphunyezweni kwabenzi beelaptop okanye iinkqubo zokusebenza, eziye zafakwa esichengeni ngabahlaseli izihlandlo ezininzi ngaphambili okanye abavelisi ngokwabo banokuba nenkohlakalo," batsho kuxwebhu lwabo. "Okwesibini, ezi zisombululo zakhelwe kwiqhezu elincinci lezixhobo, ngoko ke uninzi lweelaptops namhlanje alunayo indlela yokubona / ukuthintela ukuvalelwa."
Ekugqibeleni, abaphandi bakwazi ukulungelelanisa isixhobo sabo ukuze babone ngokuthembekileyo ukusebenza kwimakrofoni kwiimodeli ezingama-27 kwezingama-30 yeelaptops ezivavanyiweyo ezenziwe nguLenovo, Fujitsu, Toshiba, Samsung, HP, Asus kunye noDell.
Izixhobo ezithathu indlela engazange isebenze ngayo yayiyimodeli ye-Apple MacBook ka-2014, ka-2017 kunye ne-2019 (kwacetyiswa ukuba ukuvuza kwesignali akubonakali ngenxa yecala le-aluminium elikhuselekileyo kunye nokusetyenziswa kweentambo ezimfutshane ze-flexible).
"Ukukhutshwa kuvela kwiintambo kunye nezixhumi ezithwala izibonakaliso zewashi kwi-microphone hardware, ekugqibeleni isebenze i-analog-to-digital converter (ADC)," bachaza. "I-TickTock ibamba oku kuvuza ukuchonga imeko yokuvula / yokucima imakrofoni yelaptop."
Abaphandi nabo uzame ukulungisa indlela yezinye iindidi zezixhobo, ezifana nee-smartphones, iipilisi, izithethi ezihlakaniphile kunye neekhamera ze-USB, kodwa ukusebenza kakuhle kuye kwabonakala kuphantsi kakhulu: kwizixhobo ezingama-40 ezivavanyiweyo, zi-21 kuphela ezifunyenweyo, ezichazwe ngokusetyenziswa kweemakrofoni ze-analog endaweni yedijithali, ezinye iisekethe zoqhagamshelwano. kunye neekhondaktha ezimfutshane ezikhupha isignali ye-electromagnetic.
Isiphumo sokugqibela sibe yimpumelelo kakhulu, ngaphandle kwezixhobo ze-Apple.
"Nangona indlela yethu isebenza kakuhle kwiipesenti ezingama-90 zeelaptops ezivavanyiweyo, kubandakanya zonke iimodeli ezivavanyiweyo ezivela kubathengisi abadumileyo abanjengoLenovo, uDell, HP, kunye noAsus, uTickTock uyasilela ukubona imiqondiso yewotshi yee-microphone kwiilaptops ezintathu, zonke ziiApple MacBooks," Ibango lengqondo kwinqaku labo.
Baqikelela ukuba izixhobo ebezingenakubonwa, inokuba kungenxa yeemeko ze-aluminiyam zeMacBook kunye neentambo ezimfutshane eziguquguqukayo ezithomalalisa ukuvuza kwe-EM kangangokuba akukho mqondiso unokufunyanwa.
Ngokuphathelele ii-smartphones, inokuba kungenxa ye-analog kune-microphone zedijithali kwezinye iimodeli zefowuni, ukunqongophala kwemiqobo yamandla kwi-hardware ene-microphone edibeneyo, njengezithethi ezihlakaniphile.
Gqibela ukuba unomdla wokwazi okungakumbi ngayo, ungajonga iinkcukacha Kule khonkco ilandelayo.