Kashmir Hill kindly pointed me to this piece by Cameron Huddleston:
McAfee, the antivirus software company, recently released a list of the most dangerous places to give your Social Security number. Many of the places on the list might surprise you:
1. Universities and colleges
2. Banking and financial institutions
3. Hospitals
4. State governments
5. Local government
6. Federal government
7. Medical businesses (These are businesses that concentrate on services and products for the medical field, such as distributors of diabetes or dialysis supplies, medical billing services, pharmaceutical companies, etc.)
8. Non-profit organizations
9. Technology companies
10. Health insurers and medical offices
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