Masu bincike daga Jami'ar David Ben-Gurion (Isra'ila), nazarin boyayyun hanyoyin canja wurin bayanai daga keɓaɓɓen kwamfutoci, sabuwar hanyar tsara tashar sadarwa bisa tsarin siginar sigina ta hanyar canji mara ganuwa a cikin haske na allon LCD. A bangaren aiki, ana iya amfani da hanyar, alal misali, don canja wurin maɓallan ɓoyewa, kalmomin shiga da bayanan sirri daga kwamfutar da ba ta da hanyar sadarwa kuma tana kamuwa da kayan leƙen asiri ko malware.
Don ɓoye “1”, ana amfani da haɓakar haske na ɓangaren ja na launi pixel da 3% dangane da ƙimar ƙima, kuma “0” shine raguwar haske da 3%. Canje-canje a cikin haske da ke faruwa yayin canja wurin bayanai ba su ganuwa ga ɗan adam kuma ana iya amfani da hanyar ko da a lokacin da ma'aikacin ke aiki a kwamfutar da ake ciro bayanai daga ciki. Ana iya fitar da bayanan da aka daidaita ta canje-canje a cikin haske daga rikodin bidiyo, gami da waɗanda kyamarori na CCTV suka kama, kyamarori na yanar gizo da wayoyi.
Adadin canja wuri kaɗan ne kawai a cikin daƙiƙa guda. Misali, lokacin amfani da kyamarar bidiyo ta Sony SNC-DH120 720P da kyamarar gidan yanar gizon Microsoft Lifecam, mun sami damar karɓar bayanai daga nesa har zuwa mita 9 a cikin saurin 5-10 bits a sakan daya. Lokacin amfani da kyamarar wayar Samsung Galaxy S7, an rage nisan karɓar siginar zuwa mita ɗaya da rabi, kuma saurin watsawa ya ragu zuwa 1 bit a sakan daya.
a kan Hakanan an haɗa zaɓin wasu hanyoyin watsa bayanan ɓoye waɗanda masu bincike suka yi ta amfani da electromagnetic, acoustic, thermal da kuma nau'ikan haske na leaks kuma an haɗa su:
- - aika bayanai akan layin wutar lantarki, sarrafa nauyin da ke kan CPU don canza amfani da wutar lantarki;
- () - bayanai a wajen kewayon da ake ji ta hanyar lasifikan da ba a iya amfani da su ba ko belun kunne ba tare da amfani da makirufo ba;
- () - nunin fitar da bayanai daga na'urar da ke cikin ɗakin da aka tsare (Faraday cage) ta hanyar nazarin ƙananan motsi na magnetic da ke faruwa a lokacin aikin CPU;
- () - cirewar bayanai dangane da auna ma'auni na jujjuyawar filin maganadisu da ke faruwa yayin aikin CPU;
- () - canja wurin bayanai a cikin sauri har zuwa 60 bytes a cikin sakan daya daga PC zuwa wayar hannu ta hanyar bincike akan wayar hannu tare da mai kunna FM na kutsewar rediyo wanda ke faruwa yayin nuna bayanai akan nunin;
- () - watsa bayanai akan nisa har zuwa 40 cm a saurin 1-8 rago a cikin awa daya ta hanyar auna yanayin zafi na yanayin PC;
- () - fitar da bayanai a nesa mai nisa har zuwa mita 30 ta hanyar ƙirƙirar kutse ta hanyar lantarki a yawan hanyoyin sadarwar GSM da wayar hannu ta ɗauka;
- () - canja wurin bayanai a cikin sauri na 180 rago a cikin minti daya ta hanyar nazarin sautunan da aka yi lokacin sarrafa rumbun kwamfutarka;
- () - canja wurin bayanai a cikin sauri har zuwa 80 bytes a sakan daya ta hanyar nazarin kutsewar lantarki da aka kirkira yayin samun damar yin amfani da na'urori ta tashar USB;
- () - amfani da LED wanda ke nuna ayyukan rumbun kwamfutarka azaman tushen watsa bayanai a cikin gudu har zuwa 120 ragowa a sakan daya lokacin amfani da kyamarar bidiyo ta al'ada azaman mai karɓa da kuma har zuwa 4000 ragowa a cikin sakan ɗaya lokacin amfani da firikwensin musamman;
- () - Canja wurin bayanai a cikin sauri har zuwa 900 rago a cikin sa'a guda ta hanyar daidaita sautin canjin mai sanyaya da ake amfani da shi don kwantar da CPU;
- () - watsa bayanai ta hanyar infrared LED na kyamarori masu sa ido a gudun 100 rago a sakan daya kuma a nesa har zuwa kilomita;
- () - watsa bayanai a cikin gudu har zuwa 10 dubu XNUMX ragi a cikin dakika ta hanyar kyalkyali LEDs a kan hacked routes da masu sauyawa;
- - watsa bayanai ta hanyar kyalkyali marar ganuwa ko canje-canje a cikin bambancin hoton da ke kan allo.
source: budenet.ru