SS7<\/strong> <\/a>e tamb\u00e9m a resposta compreende a individualidade da esta\u00e7\u00e3o r\u00e1dio-base. Cada esta\u00e7\u00e3o r\u00e1dio-base tem coordenadas especiais e endere\u00e7a uma \u00e1rea. Como resultado da densidade, a \u00e1rea de pol\u00edtica em uma metr\u00f3pole varia de milhares a milhares.<\/p>\n <\/p>\n
Um invasor \u00e9 capaz de aproveitar as peculiaridades da rede m\u00f3vel para criar ordens de localiza\u00e7\u00e3o, al\u00e9m de rastrear a esta\u00e7\u00e3o base com sua pr\u00f3pria individualidade, utilizando Stealthy SS7 Attacks 4-5 uma s\u00e9rie de ferramentas da Web. A veracidade dessa descoberta de local \u00e9 baseada na \u00e1rea de pol\u00edtica da esta\u00e7\u00e3o base. O malfeitor estabelece o local da esta\u00e7\u00e3o base que funciona para o assinante no momento.<\/p>\n
Nossas an\u00e1lises revelam que as pulgas descobriram como fixar a localiza\u00e7\u00e3o do assinante com precis\u00e3o. Um dispositivo m\u00f3vel recebe sinais em esta\u00e7\u00f5es r\u00e1dio-base. Se o malfeitor decidir as coordenadas de 3 ou at\u00e9 2 esta\u00e7\u00f5es r\u00e1dio-base mais pr\u00f3ximas desse assinante, a localiza\u00e7\u00e3o do assinante poder\u00e1 ser reduzida.<\/p>\n
<\/p>\n
Normalmente, um dispositivo m\u00f3vel seleciona uma esta\u00e7\u00e3o base com todos os estados de r\u00e1dio durante uma transa\u00e7\u00e3o. Portanto, o dispositivo m\u00f3vel deve inserir sinais com essa rede. At\u00e9 mesmo o malfeitor pode trabalhar com um SMS para iniciar uma transa\u00e7\u00e3o oculta com todos os assinantes-alvo. As informa\u00e7\u00f5es sobre essas mensagens podem ser oferecidas a partir da considera\u00e7\u00e3o do assinante.<\/p>\n
<\/p>\n
Um meio ainda melhor de encobrir uma transa\u00e7\u00e3o \u00e9 sempre usar notifica\u00e7\u00f5es USSD silenciosas. Embora esse tipo de transa\u00e7\u00e3o n\u00e3o esteja registrado no procedimento de cobran\u00e7a, elas iniciam a troca de sinais entre o dispositivo m\u00f3vel e a rede. At\u00e9 mesmo o malfeitor pode aumentar a precis\u00e3o da localiza\u00e7\u00e3o manipulando as identifica\u00e7\u00f5es da esta\u00e7\u00e3o base e as notifica\u00e7\u00f5es USSD.<\/p>\n
<\/p>\n
O invasor solicita o identificador de sua esta\u00e7\u00e3o base. O invasor transmite uma mensagem silenciosa para induzir os dispositivos do assinante a realizar uma transa\u00e7\u00e3o por meio de uma porta sem fio. Caso o malfeitor obtenha o aumento do posicionamento.<\/p>\n
<\/p>\n
A rede pode selecionar uma nova esta\u00e7\u00e3o r\u00e1dio-base para obter a transa\u00e7\u00e3o espec\u00edfica, e o banco de dados VLR (Visitor Location Register) atualiza a localiza\u00e7\u00e3o do assinante. O invasor pergunta exatamente a localiza\u00e7\u00e3o do assinante mais uma vez e obt\u00e9m o identificador dessa esta\u00e7\u00e3o base. Portanto, o invasor pode identificar a \u00e1rea em que o assinante pode ser encontrado no momento.<\/p>\n
<\/p>\n
Conclus\u00e3o:<\/h2>\n
At\u00e9 mesmo o design de \"jardim murado\" est\u00e1 obsoleto. At\u00e9 mesmo o processo de sinaliza\u00e7\u00e3o SS7 \u00e9 conhecido como o processo da rede telef\u00f4nica. Antes da cria\u00e7\u00e3o do SS7, as ordens de servi\u00e7o para as rela\u00e7\u00f5es com os assinantes e o envio de pacotes de informa\u00e7\u00f5es eram transferidos com uma esta\u00e7\u00e3o. Esse m\u00e9todo foi atualizado e substitu\u00eddo por todos os programas de sinaliza\u00e7\u00e3o mundial (SS7) h\u00e1 mais de 30 d\u00e9cadas. O benchmark SS7 estabelece os protocolos de troca de dados e procedimentos entre os dispositivos de rede das empresas de telecomunica\u00e7\u00f5es. O SS7 funciona como uma base para obter uma infraestrutura de sinaliza\u00e7\u00e3o em redes locais e nacionais.<\/p>\n
<\/p>\n
Ela n\u00e3o representou nenhuma amea\u00e7a aos assinantes ou \u00e0s operadoras, mesmo porque a rede SS7 provou ser uma plataforma. A rede progrediu para se adequar \u00e0s normas de suporte a links e servi\u00e7os m\u00f3veis e, tamb\u00e9m no s\u00e9culo XXI, alguns protocolos de transporte de sinaliza\u00e7\u00e3o conhecidos como SIGTRAN foram estabelecidos pela primeira vez. O SIGTRAN pode ser uma expans\u00e3o do SS7 que permite o emprego de redes IP para mover mensagens, e tamb\u00e9m essa inven\u00e7\u00e3o fez com que a rede de sinaliza\u00e7\u00e3o deixasse de ser dispersa.<\/p>","protected":false},"excerpt":{"rendered":"
Aprimoramento do posicionamento SS7 durante o rastreamento de localiza\u00e7\u00e3o Provavelmente, um dos ataques \u00e0s redes SS7 seria a observa\u00e7\u00e3o da localiza\u00e7\u00e3o. A localiza\u00e7\u00e3o de um assinante de peti\u00e7\u00e3o \u00e9 roteada por meio de redes SS7 e tamb\u00e9m a resposta compreende a individualidade da esta\u00e7\u00e3o r\u00e1dio-base. Cada esta\u00e7\u00e3o r\u00e1dio-base tem coordenadas especiais e endere\u00e7a uma \u00e1rea. Como resultado da densidade, a...<\/p>","protected":false},"author":1,"featured_media":1728,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69,1],"tags":[],"class_list":["post-479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sms-intercept","category-ss7-sms"],"yoast_head":"\n
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