Privacy Flashcards
Define security
The protection of data from being accessed by unauthorised entities.
Define privacy
The protection against personal intrusion, intrusion of personal affairs and unapproved public disclosure of data.
What is GDPR?
General Data Protection Regulation.
An Opt-In regulation in which those who don’t opt-in don’t given consent for data controllers to collect their data.
What are the 4 entities in GDPR?
Data Subjects - Member of EEA country whose data is collected.
Data Controller - Entity that collects and stores data.
Data Processor - Entity that uses data from the controller.
Define Anonymisation
The irreversible modification of a data subjects records in order to make them anonymous.
Define Psuedonymisation
The partial anonymisation of a data subject. For example, changing the data subjects name to a record ID.
Define De-anonymisation
Reversing anonymisation to deduce the identity of the data subject. This is usually done through a combination of subject data and public data.
What is Privacy Preserving Computation?
Operating on data in a way in which none of the details of any participating data subject are revealed.
What are the 2 types of privacy preserving computation?
Secure Multiparty Computation - Compute a function over subjects data whilst keeping subjects private.
Homomorphic Encryption - The ability to manipulate encrypted data without decrypting it. Thus, data can be processed by a third party without risk of subject identification.
Give an example of Secure Multiparty Computation…
Yao’s garbled circuit.
Give a disadvantage of Homomorphic Encryption…
Often complex and slow, therefore, use partial homomorphic encryption.
What is a Randomised Response Survey?
A survey technique that ensures a level of anonymity to responders.
What is the purpose of differential privacy?
It ensures that data analysts can’t view any one individual data record or derive any data record.
How can we find a record in a data set that has differential privacy?
If we are explicitly given the details of the data record.
What theorem can we use to obtain the differential of a database?
Bayes Theorem.
