There are a number of scams being perpetrated by criminals in Brazil to illegally gain access to your bank accounts and you need to protect yourself, because the banks themselves are doing very little to prevent it. Online it is mostly a problem for users of Google Chrome.
First of all you need to keep in mind that no bank anywhere in Brazil will ever contact you by e-mail under any circumstances. Many people are taken in every year by e-mails supposedly from a bank stating that their are some irregularities with their account, the bank is restructuring their internet banking system, or other excuse, which directs them to a website which appears almost identical to the legitimate bank website. The e-mail instructs you do confirm all your registered information (recadastrar). If you fall for it you'll get wiped out before you even know it.
I don't know how many times I've gotten e-mails from banks and I don't even have an account. Never open an e-mail sent to you from any so-called bank under any circumstances. It may contain a Trojan Horse Virus that will skim all your account and password information the next time you enter your bank's website to conduct a transaction; or it will be one of these 'recadastrar' scams. Delete the e-mail without opening it or mark it as junk mail so the server can investigate.
BANKS DO NOT SEND E-MAIL MESSAGES TO THEIR CLIENTS - EVER!!!
Cheers,
William James Woodward - Brazil Animator, Expat-blog Team