According to the FTC:
“The Safeguards Rule applies to financial institutions subject to the FTC’s jurisdiction and that aren’t subject to the enforcement authority of another regulator under section 505 of the Gramm-Leach-Bliley Act, 15 U.S.C. § 6805. According to Section 314.1(b), an entity is a “financial institution” if it’s engaged in an activity that is “financial in nature” or is “incidental to such financial activities as described in section 4(k) of the Bank Holding Company Act of 1956, 12 U.S.C § 1843(k).”
If your business handles customer financial data, and you’re not a bank, then it’s likely that you are now required to comply with the FTC Safeguards Rule.