Poor and uneducated savers have been the main victims on the deposit side of the banking crisis in Spain so far, potentially losing as much as 30 billion euros, with hardly any mention in the press. While the government has been willing to spend billions to bail out regular bond holders, the banks used the last three years to scam as many customers as possible into holding preferred shares.
I have some personal experience with this, as three years ago I noticed that all of a sudden my regular monthly renewing deposits had been shifted into a securities account and was now in preferred shares of the bank. This had been done completely without my consent, and luckily for me I knew enough about these things to immediately raise hell, and I managed to sell the preferred shares without taking a loss.
Another family member was not so lucky, and we found out that she had lost 50,000 euros that she thought was in a regular deposit account.