Do embassy workers have access to my financial information? [closed]

Take it from somebody working in enterprise IT: there is no one set of "the information". Even in a single country, there are thousands of databases maintained by dozens of government departments, each with different bits of info and different access controls. All of them are hard to correlate with each other, so much so that it's very difficult to search for anything (like, say, a name, much less a specific person) across them. Every now and then some bureaucrat decides this is intolerable and sets out to build a new unified system, which just adds yet another layer of cruft to the creaky pile. All this applies to systems in a single country: the complexity of trying to coordinate access across multiple countries is considerably worse.

To get back to your question: the officer handling your visa application will have access to some key info, like your immigration history for that country. They'll probably have access to some terrorist watchlist type systems that may cross country boundaries, like the US/UK/etc Five Eyes system, and they may be able to request searches into others if something catches their eye. But, no, they will not have any sort of instant access to your private financial records in a foreign country.