Hackers hijacked a major Brazilian ISP this month in a sophisticated attack that silently served up malicious software and phishing scams to more than a million customers. According to Brazilian news outlet Globo.com, unknown attackers hijacked the domain name system (DNS) records for NET Virtua, a broadband provider that serves at least 1.4 million customers in the region. NET Virtua’s DNS records reportedly were hijacked on April 11, so that customers who visited any site that ran Google Adsense content were redirected to a site that tried to install and run a Java applet that in turn installed a Trojan horse program. Globo.com said the attackers also took aim at Bradesco, one of Brazil’s largest financial institutions. NET Virtua customers who tried to visit Bradesco.com.br during the four hours the DNS records were hijacked were redirected to a counterfeit version of the site designed to steal customer credentials, the story