![]() ![]() There are three exceptions to the definition of “breach.” The first exception applies to the unintentional acquisition, access, or use of protected health information by a workforce member or person acting under the authority of a covered entity or business associate, if such acquisition, access, or use was made in good faith and within the scope of authority. The extent to which the risk to the protected health information has been mitigated.Ĭovered entities and business associates, where applicable, have discretion to provide the required breach notifications following an impermissible use or disclosure without performing a risk assessment to determine the probability that the protected health information has been compromised.Whether the protected health information was actually acquired or viewed and.The unauthorized person who used the protected health information or to whom the disclosure was made.The nature and extent of the protected health information involved, including the types of identifiers and the likelihood of re-identification.An impermissible use or disclosure of protected health information is presumed to be a breach unless the covered entity or business associate, as applicable, demonstrates that there is a low probability that the protected health information has been compromised based on a risk assessment of at least the following factors: Definition of BreachĪ breach is, generally, an impermissible use or disclosure under the Privacy Rule that compromises the security or privacy of the protected health information. ![]() Similar breach notification provisions implemented and enforced by the Federal Trade Commission (FTC), apply to vendors of personal health records and their third party service providers, pursuant to section 13407 of the HITECH Act. This articleĬommons Attribution-NonCommercial-NoDerivs 3.0 license.The HIPAA Breach Notification Rule, 45 CFR §§ 164.400-414, requires HIPAA covered entities and their business associates to provide notification following a breach of unsecured protected health information. For example, contact discovery between a client with 1024 contacts and a server with 67 million user entries takes 1.36 sec (when using server multi-threading) and uses only 4.28 MiB of communication.Ĭopyright in PoPETs articles are held by their authors. We report on a highly optimized prototype implementation of our system, which is practical on real-world set sizes. Our protocol has provable security guarantees and combines new ideas with state-of-the-art techniques from private information retrieval and private set intersection. The protocol is specifically tailored to the case of a small client set and large user database. In this work, we present a system for private contact discovery, in which the client learns only the intersection of its own contact list and a server’s user database, and the server learns only the (approximate) size of the client’s list. Naïve approaches to contact discovery reveal a user’s entire set of social/professional contacts to the service, presenting a significant tension between functionality and privacy. PIR-PSI: Scaling Private Contact DiscoveryĪuthors: Daniel Demmler (TU Darmstadt), Peter Rindal (Oregon State University), Mike Rosulek (Oregon State University), Ni Trieu (Oregon State University)Ībstract: An important initialization step in many social-networking applications is contact discovery, which allows a user of the service to identify which of its existing social contacts also use the service. ![]()
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