Another professor, Bill Black, describes the vulnerability further in his video interview here. Here is a link to an MP3 file with Chris Whalen, a risk analyst with expertise in the banking sector. Shadow banks compound the danger from systemically important or "too big to fail" financial intermediaries because they are separated from the conventional financial system only by accounting cleverness. They are still a danger on the road to financial stability being restored.
The following is excerpted from Thoma's article:
"One approach to solving this problem is to
provide deposit insurance in the shadow banking system that mimics the
insurance available to traditional banks. But regulators are reluctant
to expand the explicit government commitments to the financial system to
this degree. A more likely approach is to restrict the allowable
collateral to ultra safe assets such as Treasuries, and there is good
news along these lines. The Federal Reserve Bank of New York is working
on a proposal to make shadow banking safer by tightening up collateral
requirements."
"However, it is not yet
clear what types of collateral that shadow banks will be allowed to hold
against deposits, and the potential bad news is that the inevitable
howls and protests from the financial industry about how the economy
will be harmed if their activities are restricted may fall on
sympathetic ears. When combined with the large amount of political
influence the shadow banks have, the result may be an outcome that is
not as restrictive as needed to keep the system safe."