BBC is reporting that "French data protection agency CNIL, having begun looking into the exact data that Google's Street View cars captured, has found that the "sensitive data" included email passwords and "data that're normally covered by… banking and medical privacy rules".
That's, potentially, pretty sensitive stuff, although there's no evidence that said data has been used maliciously.
French authorities are still investigating and hope to come to a decision by Sep as to whether to prosecute for breach of privacy. Other options include handing down a warning or issuing a fine.
Google says it's co-operating with French authorities and others around the world, and that ultimately it wants to delete the data and move on. "We've reached out to the data protection authorities in relevant countries, and are working with them to answer any questions they've," a Google spokesperson is quoted by the BBC. "Our ultimate objective is to delete the data consistent with our legal obligations and in consultation with appropriate authorities."