Conexões da Oi e GVT são alvos de ataque hacker
Autor: Equipe Nerd's | Publicado: 2011-11-17T19:49:00-03:00

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Uma brecha no sistema de DNS das operadoras GVT e Oi expôs usuários da internet a hackers, que solicitavam o download de softwares para roubo de dados e controle total do computador das vítimas. O problema fez com que o acesso a grandes sites como Google, Facebook, YouToube ou Gmail fosse redirecionado às páginas maliciosas.Ao tentar acessar um destes serviços, o usuário recebia uma mensagem solicitando o download de uma suposta solução de segurança, de nome Google_setup.exe ou Facebook_Complemento.exe, dependendo do site. Com a instalação, os hackers passavam a ter acesso aos computadores das vítimas.O DNS funciona como uma espécie de intermediário entre a conexão dos usuários e os sites que eles desejam acessar. Um problema desse tipo permite que os hackers tenham acesso aos computadores que utilizam o sistema, algo que é particularmente grave quando se trata de operadoras como a Oi ou GVT, que juntas acumulam mais de 8 milhões de clientes em diversos estados brasileiros. As empresas, porém, ainda não se pronunciaram sobre o caso.