We also learned in 2008 that the private credit rating agencies cannot effectively assess the risk of what banks are doing either, despite that ostensibly being their entire area of expertise. So paying a company to assess the risk is out as a realistic option.
This was one of the 20 largest banks in the United States. If you can't trust the soundness of deposit accounts at top 20 banks that have been operating without issue for decades, your only rational choice is to move your deposits into the four "too big to fail" banks that you know the government will bail out in the event they collapse. Nothing else is safe.