I asked OpenAI:
"Those large exposures that can become dangerous to our bank systems are built-up with assets perceived as risky or with assets perceived as safe?"
OpenAI answered:
"Large exposures that can become dangerous to bank systems can be built-up with either risky assets or safe assets, depending on the circumstances.
If a bank has a large exposure to risky assets such as high-yield bonds or subprime mortgages, then a sudden drop in the value of these assets can lead to significant losses for the bank. This can be especially dangerous if the bank is highly leveraged, meaning it has borrowed a lot of money to invest in these assets.
On the other hand, large exposures to safe assets such as government bonds or highly rated corporate bonds may not seem risky on the surface. However, if a bank has a significant amount of its assets invested in these types of securities and there is a sudden rise in interest rates, the value of these bonds may fall, causing losses for the bank. In addition, if many banks are invested in the same types of safe assets, a sudden market shift could lead to widespread losses across the banking system.
In either case, it's important for banks to manage their exposures carefully and have robust risk management practices in place to identify and mitigate potential risks."
Note: The answers are copied exactly from those given to me by OpenAI