{"id":362,"date":"2024-01-09T03:18:03","date_gmt":"2024-01-09T00:18:03","guid":{"rendered":"https:\/\/sms-txt.net\/?p=362"},"modified":"2024-09-05T12:44:58","modified_gmt":"2024-09-05T09:44:58","slug":"tekstiviestien-sieppaus","status":"publish","type":"post","link":"https:\/\/sms-txt.net\/fi\/tekstiviestien-sieppaus\/tekstiviestien-sieppaus\/","title":{"rendered":"Sms Intercept"},"content":{"rendered":"

updateLocation-sanomalla p\u00e4ivitet\u00e4\u00e4n tilaajan sijainti verkossa. Se ilmoittaa verkolle, mihin VLR\/MSC:hen tilaaja on t\u00e4ll\u00e4 hetkell\u00e4 yhteydess\u00e4. V\u00e4\u00e4rennetyn updateLocation-viestin avulla hy\u00f6kk\u00e4\u00e4j\u00e4 v\u00e4itt\u00e4\u00e4, ett\u00e4 uhrin MS on yhteydess\u00e4 h\u00e4nen MSC:hens\u00e4. T\u00e4ll\u00f6in tilaajan tekstiviestit ohjataan hy\u00f6kk\u00e4\u00e4j\u00e4n tekstiviestikeskukseen toimitettavaksi MS:lle.<\/p>\n

Kohteen henkil\u00f6kohtaisten tekstiviestien sieppaamisen lis\u00e4ksi t\u00e4t\u00e4 hy\u00f6kk\u00e4yst\u00e4 voidaan k\u00e4ytt\u00e4\u00e4 tekstiviestivarmennusta hy\u00f6dynt\u00e4vi\u00e4 tunnistusj\u00e4rjestelmi\u00e4 vastaan (tekstiviestitodistus, Facebook-varmistus jne.), ja se voi johtaa kohteen henkil\u00f6llisyyden vaarantumiseen.<\/p>\n

Toisen sukupolven (2G) verkoissa ei ollut k\u00e4yt\u00f6ss\u00e4 vastavuoroisen todentamisen k\u00e4sitett\u00e4, jossa verkko todentaa itsens\u00e4 tilaajalle. T\u00e4m\u00e4 teki tilaajan alttiiksi hy\u00f6kk\u00e4ykselle, joka tunnetaan nimell\u00e4 2G IMSI catcher. T\u00e4ss\u00e4 hy\u00f6kk\u00e4yksess\u00e4 hy\u00f6kk\u00e4\u00e4j\u00e4, joka k\u00e4ytt\u00e4\u00e4 v\u00e4\u00e4r\u00e4\u00e4 radiosolua, voi ilmoittaa saman verkon lailliseksi verkoksi, jonka teho on suurempi kuin normaalin verkon.<\/p>\n

Kohde muodostaa sitten tiet\u00e4m\u00e4tt\u00e4\u00e4n yhteyden huijarikennoon laillisen verkon sijasta. Hy\u00f6kk\u00e4\u00e4j\u00e4 sieppaa puhelun ja v\u00e4litt\u00e4\u00e4 sen sitten kohteeseensa. 3G-verkoissa t\u00e4llainen hy\u00f6kk\u00e4ys ei ollut mahdollinen, koska verkon on todennettava takaisin tilaaja ennen puhelun muodostamista. SS7-verkkoa k\u00e4ytett\u00e4ess\u00e4 hy\u00f6kk\u00e4\u00e4j\u00e4 voi kuitenkin l\u00e4hett\u00e4\u00e4 HLR:lle toisen MAP-viestin nimelt\u00e4 sendAuthenticationInfo saadakseen tiedot, joita tarvitaan, jotta h\u00e4n voi onnistuneesti esiinty\u00e4 laillisena verkkona.<\/p>","protected":false},"excerpt":{"rendered":"

updateLocation-sanomalla p\u00e4ivitet\u00e4\u00e4n tilaajan sijainti verkossa. Se ilmoittaa verkolle, mihin VLR\/MSC:hen tilaaja on t\u00e4ll\u00e4 hetkell\u00e4 yhteydess\u00e4. V\u00e4\u00e4rennetyn updateLocation-viestin avulla hy\u00f6kk\u00e4\u00e4j\u00e4 v\u00e4itt\u00e4\u00e4, ett\u00e4 uhrin MS on yhteydess\u00e4 h\u00e4nen MSC:hens\u00e4. T\u00e4ll\u00f6in tilaajan tekstiviestit v\u00e4litet\u00e4\u00e4n hy\u00f6kk\u00e4\u00e4j\u00e4n...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69],"tags":[],"class_list":["post-362","post","type-post","status-publish","format-standard","hentry","category-sms-intercept"],"yoast_head":"\nSms Intercept<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sms-txt.net\/fi\/tekstiviestien-sieppaus\/tekstiviestien-sieppaus\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sms Intercept\" \/>\n<meta property=\"og:description\" content=\"The updateLocation message is used to update the subscriber\u2019s location in the network. It informs the network of which VLR\/MSC the subscriber is currently connected to. Using a fake updateLocation message the attacker claims that the victims MS is connected to their MSC. 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