Yes. I'll give you an example.
Section 34 of the Financial Administration Act states that, when an invoice is received from a supplier, someone must be able to certify that the goods or services were delivered. That's normal. If I ordered 10 chairs, I must check whether I received them all. Obviously, it's harder to verify whether $10,000 or $100,000 worth of services were delivered, especially if there aren't any breakdowns. Clearly, this area is more conducive to fraud.
To answer your question, yes, our members do sometimes share their concerns with us, or ask us questions about situations that they see. This doesn't necessarily mean that these are fraud cases. It may just mean that more oversight is needed.
I can't say that there are in fact fraud cases. However, I can tell you that anomalies are reported, and that's normal.