Does anyone have experience doing backlinking for a client in a highly regulated industry, such as Financial Services or the Medical field.

I'm wondering how building "crap" backlinks (chinese blogs, russian pornsites, etc) can be damaging in professional industries.

Healthcare falls under the insane HIPAA laws and Fin. Srvcs is burdened by the SEC, FINRA, etc.

I'm wondering if anyone has worked in either field and thinks building non-relevant backlinks is a good idea.