The payment card industry data security standard (PCI DSS) pertains to organizations that handle credit card transactions and is an industry regulatory standard, not a governmental one.

Explanation
The SOC 3 is the least detailed, so the provider is not concerned about revealing it. The SOC 1 Types 1 and 2 are about financial reporting, and not relevant. The SOC 2 Type 2 is much more detailed and will most likely be kept closely held by the provider.

The Health Insurance Portability and Accountability Act (HIPAA) requires the U.S. Federal Department of Health and Human Services to publish and enforce regulations pertaining to electronic health records and identifiers between patients, providers, and insurance companies. It is focused on the security controls and confidentiality of medical records, rather than the specific technologies used, so long as they meet the requirements of the regulations.

Explanation/Reference:
Explanation:
Background checks are controls for attenuating potential threats from internal actors; external threats aren't likely to submit to background checks.

Removing antimalware agents. Hardening the operating system means making it more secure.
Limiting administrator access, closing unused ports, and removing unnecessary services and libraries all have the potential to make an OS more secure. But removing antimalware agents would actually make the system less secure. If anything, antimalware agents should be added, not removed.