Netflix de anonymization

1. Can anonymization be reversed?
2. What is de-anonymization?
3. Is anonymization 100% possible?
4. What is de-anonymization by network operators?
5. Is pseudonymization reversible?
6. Does Google anonymize IP address?
7. Is Deidentification an encryption?
8. What is the difference between anonymization and de-identification?
9. Can you truly anonymize data?
10. Do you need consent to anonymise data?
11. Can data ever be truly anonymous?
12. Is data anonymization irreversible?
13. Can anonymized data be re identified?
14. Can anonymized data be identified?
15. How long can you keep anonymised data?
16. What is the problem with anonymized data?
17. Is data masking the same as anonymization?

Can anonymization be reversed?

Anonymization renders data permanently anonymous; the process cannot be reversed to re-identify individuals.

What is de-anonymization?

De-anonymization is a technique used in data mining that attempts to re-identify encrypted or obscured information. De-anonymization, also referred to as data re-identification, cross-references anonymized information with other available data in order to identify a person, group, or transaction.

Is anonymization 100% possible?

Unfortunately, according to a paper, successfully anonymising data is practically impossible for any complex dataset.

What is de-anonymization by network operators?

De-anonymization is a data mining strategy in which anonymous data is cross-referenced with other data sources to re-identify the anonymous data source. Any information that distinguishes one data source from another can be used for de-anonymization.

Is pseudonymization reversible?

The pseudonymization process is reversible. Pseudonyms refer back to the original data set, which means that someone with access to the reference table can match each record to the named individual. For this reason, businesses must store pseudonym tables in a safe environment.

Does Google anonymize IP address?

The IP truncation/masking takes place as soon as data is received by Google Analytics, before any storage or processing takes place. The process of IP masking in Analytics takes place within two steps in the collection pipeline: the JavaScript Tag and the Collection Network.

Is Deidentification an encryption?

A key difference between data encryption and the de-identification of data is how HIPAA regulations apply to each. Data encryption is considered “addressable” instead of “required,” under HIPAA.

What is the difference between anonymization and de-identification?

Anonymous – The dataset does not contain any identifiable information and there is no way to link the information back to identifiable information. De-identified – The dataset does not contain any identifiable information, but there is a way to link the information back to identifiable information.

Can you truly anonymize data?

Data that has been treated with masking alone would not be sufficient to remove the risk of re-identification, and would still be considered personal data under the scope of GDPR. However, data that has been truly anonymized is no longer captured by the scope of the regulation.

Do you need consent to anonymise data?

In other words, the processing of personal data in order to fully anonymize it is “compatible with the purpose for which the personal data are initially collected” and therefore does not require an additional legal basis, such as consent, specifically for the act of anonymizing.

Can data ever be truly anonymous?

Fully 'anonymised' data does not meet the criteria necessary to qualify as personal data and is therefore not subject to the same restrictions placed on the processing of personal data under the General Data Protection Regulation (GDPR). Data can be considered 'anonymised' when individuals are no longer identifiable.

Is data anonymization irreversible?

Data anonymization refers to an irreversible transformation of data to prevent the identification of a particular individual. Irreversible means that it must be impossible to re-identify the person in question, directly or indirectly. An alternative is pseudonyimzation.

Can anonymized data be re identified?

The proliferation of publicly available information online, combined with increasingly powerful computer hardware, has made it possible to re-identify “anonymized” data. This means scrubbed data can now be traced back to the individual user to whom it relates.

Can anonymized data be identified?

Anonymized data is data that can no longer be associated with an individual in any manner. Once this data is stripped of personally identifying elements, those elements can never be re-associated with the data or the underlying individual.

How long can you keep anonymised data?

There are two ways you can avoid data retention deadlines. The first is by anonymising data; this means that the information cannot be connected to an identifiable data subject. If your data is anonymised, the GDPR allows you to keep it for as long as you want.

What is the problem with anonymized data?

The challenges of anonymised data

Perturbation: injecting noise into the data so it's secure without harming its statistical significance — this often leaves the data lacking accuracy. Permutation: “permuting” or randomising specifically the personally identifiable attributes within the data.

Is data masking the same as anonymization?

Data Masking vs Anonymization

Data masking adds another layer of security to data anonymization by masking certain pieces of data and only showing the most relevant pieces of data to data handlers who are explicitly authorized to see those specific pieces of relevant data.