CFO are often involved in fraud. it is part of finance industry training to be wary of dealing with other financial institutions.
https://tax.thomsonreuters.com/news/enron-former-cfo-i-am-on...
https://www.accountancydaily.co/ex-countrywide-cfo-charged-f...
https://www.businessinsider.com/bed-bath-and-beyond-cfo-foun...
https://www.nytimes.com/2024/02/01/nyregion/weisselberg-perj...
https://www.justice.gov/usao-ndtx/pr/cfo-controller-corporat...
https://www.fraud-magazine.com/article.aspx?id=4294976271
https://core.ac.uk/reader/231825040
https://www.nydailynews.com/2023/10/05/former-ftx-co-founder...
https://www.justice.gov/usao-wdwa/pr/former-company-chief-fi...
https://www.nydailynews.com/2023/10/05/former-ftx-co-founder...
https://www.investopedia.com/terms/w/worldcom.asp
whistleblowers get punished all the time.
https://www.pbs.org/wgbh/pages/frontline/warning/interviews/...
https://www.institutionalinvestor.com/article/2btg8yx4pcckb0...
https://www.marketswiki.com/wiki/Madelyn_Antoncic
https://www.wsj.com/articles/wells-fargo-fined-22-million-fo...
https://www.npr.org/2016/11/04/500728907/senators-investigat...
etc etc