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SESK: Stuff Everyone Should Know · sesk.info/hipaa-integrity-authentication-addressable

Which addressable control helps prove ePHI was not altered?

A mechanism to authenticate ePHI is addressable.

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  1. Automatic logoff
  2. A mechanism to authenticate ePHI ✔
  3. Facility security plan

Why: The integrity standard requires protecting ePHI from improper alteration or destruction. The authentication mechanism is addressable.

Huh, didn't know that: Hash values or digital signatures are common ways to authenticate electronic records.

The dad joke
Why did the ePHI file get a digital signature? To prove it had not been altered by the office printer.
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References

Answer: A mechanism to authenticate ePHI. The integrity standard requires protecting ePHI from improper alteration or destruction. The authentication mechanism is addressable.

  1. 45 CFR 164.312(c)(2) www.ecfr.gov/current/title-45/subtitle-A/subchapter-C/part-164/subpart-C/section-164.312
    Implement electronic mechanisms to corroborate that electronic protected health information has not been altered or destroyed in an unauthorized manner.
    Checked 2026-10-10.

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