The ior.Va site for the Institute for Works of Religion, or IOR under its Italian acronym, contains information about the bank including the CVs of the cardinals' commission which oversees the institution.
The IOR last year had 18,900 clients, 114 employees and a total of USD 9.4 billion in assets under management, according to a facts and figures section on the pared-down website.
It made a net profit of 86.6 million euros in 2012.
Pope Francis has set up a committee to investigate the bank and is planning a major shake-up as part of broader reforms of the Vatican bureaucracy.
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"Our duty is to manage the IOR in such a way that it can conform with international norms, that it can be a clean institution," IOR president Ernst Von Freyberg said in an interview with Vatican radio.
Von Freyberg said the bank would publish its accounts for the first time later this year.
The investigation found that the bank operated in a way that made it susceptible to money laundering, according to legal documents leaked to Italian media.
Investigators reportedly said the bank did not carry out enough checks on clients and account holders were allowed to transfer large sums on behalf of others.
The inquiry centred on a suspect USD 30 million transfer made from the Vatican bank to Italian lender Credito Artigiano in September 2010.