Deducing and using an email address under GDPR I was recently contacted on a work email address by a recruiter, working from a private recruitment agency. I have had no prior contact with this recruiter or agency before this. The work email address I was contacted on is not listed in the public domain anywhere that I know of (not on the company site, not on LinkedIn etc). When I questioned the recruiter about where he found my email, they stated that they had: "[...] had contact with people at [CompanyX] before and know the email syntax". I can only assume this means they knew I had started work at the company (this information is available on LinkedIn in the public domain) and knew the email syntax, and so used this knowledge to guess my email address and contact me. Given new GDPR legislation in the UK and Europe, specifically around the need for a company to gain explicit consent to contact someone before doing so, is this approach for contacting people legal under GDPR?
First take a look at Article 13(1) of Directive 2002/58/EC Article 13 Unsolicited communications The use of automated calling systems without human intervention (automatic calling machines), facsimile machines (fax) or electronic mail for the purposes of direct marketing may only be allowed in respect of subscribers who have given their prior consent. Notwithstanding paragraph 1, where a natural or legal person obtains from its customers their electronic contact details for electronic mail, in the context of the sale of a product or a service, in accordance with Directive 95/46/EC, the same natural or legal person may use these electronic contact details for direct marketing of its own similar products or services provided that customers clearly and distinctly are given the opportunity to object, free of charge and in an easy manner, to such use of electronic contact details when they are collected and on the occasion of each message in case the customer has not initially refused such use. Note that this is a Directive, so it is not directly binding, but each EU member state has created it's own laws containing this. I also quoted paragraph 2 for completeness, but based on your description, it does not apply. Article 95 GDPR explicitly specifies it does not change any obligations from Directive 2002/58/EC. So it looks very clear to me the situation you describe is not legal. Article 14 GDPR allows you to request all information regarding this, which included information how they have exactly obtained your name and email address.
From the GDPR's definitions: ‘personal data’ means any information relating to an identified or identifiable natural person (‘data subject’); an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person; This blurred image would be &quot;information relating to an identified ... natural person (‘data subject’).&quot; It does not matter whether the person can be identified using the information in question. Therefore, the answer to your question Under GDPR, does blurhash of a profile picture count as personal data is yes.
Does GDPR apply if my web app stores personal data on the user's phone only? No. If you are not processing Personally Identifiable Information (PII) then the GDPR does not apply to you. This is what a web browser does when it asks to remember your username and password for this web site. You are providing a tool, the user is using that tool to process their own data. I do offer to back up the user's personal data At this point you are processing the users PII, and the GDPR does apply to you. Even though you do not have enough information to identify an individual, as it can be used with other information to identify an individual it is PII. From the ICO: Can we identify an individual indirectly from the information we have (together with other available information)? Even if you may need additional information to be able to identify someone, they may still be identifiable. That additional information may be information you already hold, or it may be information that you need to obtain from another source. When considering whether individuals can be identified, you may have to assess the means that could be used by an interested and sufficiently determined person.
[I'm not so well-versed on US and Russian law, thus I will limit my answer to EU law.] Your specific use of a user identifier, as I understood from your question, can be classified as personal data, so in your case, the GDPR seems to apply. This means that you need to have a) legitimate purposes to process that personal data (e.g. crash reporting) and b) a legal justification for each purpose of processing: it could be based on consent or another legitimate purpose (inc. your own legitimate interests). Consent might not be the best option for you, but it's up to you to decide. In any case, you need to assess the risks to the data subjects (your users) before you decide. How likely is it that you will get breached, and what potential harm will that cause to your users? These are some guidelines; my recommendation is that you read the law and the guidelines by the Article 29 Working Group and European Data Protection Board, or hire some good experts on this. There is no easy answer, or one size fits all solution. The GDPR isn't so hard to understand or implement, but it does require some change in mindset. With the new law, processing personal data carries a higher risk of penalties, so you should do it only when it's absolutely necessary, and with respect to the rights of your users.
GDPR Article 4 paragraph 1 says: ‘personal data’ means any information relating to an identified or identifiable natural person (‘data subject’); an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person; Recital 26 says Personal data which have undergone pseudonymisation, which could be attributed to a natural person by the use of additional information should be considered to be information on an identifiable natural person. ... The principles of data protection should therefore not apply to anonymous information, namely information which does not relate to an identified or identifiable natural person or to personal data rendered anonymous in such a manner that the data subject is not or no longer identifiable. Recital 30 says: Natural persons may be associated with online identifiers provided by their devices, applications, tools and protocols, such as internet protocol addresses, cookie identifiers or other identifiers such as radio frequency identification tags. This may leave traces which, in particular when combined with unique identifiers and other information received by the servers, may be used to create profiles of the natural persons and identify them. An IP address hashed through a cryptographically secure one-way hash cannot reasonably be used to establish the original IP address, nor to geolocate, nor to directly identify the data subject. However if such addresses are stored in a database with a link to the subject's individual record, or to other data which identify the data subject, then they would clearly be personal information. The ICO's page on &quot;What is personal data&quot; says: ‘Online identifiers’ includes IP addresses and cookie identifiers which may be personal data. The page from GDPR.EU on &quot;Personal Data&quot; says: Any information that can lead to either the direct or indirect identification of an individual will likely be considered personal data under the GDPR. ... Any data that relate to an identifiable individual is personal data. The page on &quot;Personal Data&quot; from gdpr-info.eu says: Personal data are any information which are related to an identified or identifiable natural person. The data subjects are identifiable if they can be directly or indirectly identified, especially by reference to an identifier such as a name, an identification number, location data, an online identifier or one of several special characteristics, which expresses the physical, physiological, genetic, mental, commercial, cultural or social identity of these natural persons. In practice, these also include all data which are or can be assigned to a person in any kind of way. For example, the telephone, credit card or personnel number of a person, account data, number plate, appearance, customer number or address are all personal data. Since the definition includes “any information,” one must assume that the term “personal data” should be as broadly interpreted as possible. This is also suggested in case law of the European Court of Justice ... See also &quot;Can a dynamic IP address constitute personal data?&quot; If a hashed IP address is stored so that it can be related to a specific individual, it is personal data. as such, it would be subject to the GDPR. To store it one would need to identify a lawful basis under GDPR Article 6 This could be the Data subject's consent, or the Controller's legitimate interest. In either case the information should be included in the list of personal information collected (often in a privacy policy document), disclosed to the subject on request, adn deleted on request if possible. If that is done, such a use of a hashed IP, although personal information, would seem to be compliant. If a hashed IP is stored in such a way that it cannot be related to any particular user, then it would not constitute personal information, and no compliance issue would seem to exist. Limiting the retention time of a hashed IP is a good practice which would reduce any possible impact it might have.
a few quick notes that come to mind. As the commenters point out: DSGVO is indeed the German equivalent name to the GDPR (English term) "Imprint" isn't a privacy related topic that much, as such it's not really changed by the upcoming GDPR The GDPR changes many things, but the requirement for up front information isn't one of them - so it would've already been a rule to follow Sometimes the question who is responsible for privacy information might not be that easy to decide when you're on platforms. I take this situation as being pretty clear though. You are basically given a blank slate, you can do with that page whatever you want, and the visitor has no clue whatsoever that it might be hosted by Github. In addition to this, Github would be classified as a data processor (providing the tool) and you as the data controller who is in charge of practically everything except for the provision of the page. I hope this helps. Btw. it's not that hard anymore to write a privacy policy these days.
The GDPR does not outlaw such processing of personal data. It merely regulates how and for what purposes you can process personal data. In general, you can conduct any processing activity as long as it has a clear purpose and a legal basis. Here, the purpose would likely be something like “conducting business with my clients” and the legal basis would be a “legitimate interest”. A legitimate interest always requires a balancing test that weighs your interests against the interests and rights of the affected persons. For example, can the affected persons reasonably expect such processing activities? In a professional setting, it can probably expected that business partners keep notes about contact persons so your intended processing could be fine. The GDPR does impose some general constraints. There are general principles like data minimization and storage limitation – you should only collect data that is necessary for your purpose, and shouldn't store it for longer than necessary. You should think about appropriate technical and organizational measures (TOMs) to protect the processing activity, for example about how your CRM is hosted, how backups are made and how security updates are installed, who has access to the personal data, and how the people with access to the personal data can be trained. For example, such training might inform your employees that they can only use the data in the CRM for business purposes, but absolutely not for personal purposes like asking Gina from reception out for a date.
The way you describe this UUID, it is pseudonymous data (see GDPR Art 4(5) and Recitals 28–29). That is, it is not directly identifying, but you have a mapping between pseudonyms and identifiers that can be used to re-identify this data. Effective pseudonymisation requires not only that the data is logically separate, but that there are effective organisational and technical measures preventing re-combination by unauthorized persons. Alongside with encryption, pseudonymisation is one of the safety measures that the GDPR explicitly requires whenever appropriate (see Art 25, Art 32). Pseudonymous data is still personal data, because you can easily re-identify the data. The PII concept is US-specific and is misleading in a GDPR context, where it is not the inherently identifying characteristics of the information that matters, but the realistic ability of the data controller to single out data subjects to whom this data relates (compare Art 4(1) and Recital 26). However, were you to irrevocably erase the UUID–email mapping, things are more tricky. There is no longer any connection with directly identifying data, so this data might be anonymous. On the other hand, such a persistent UUID still allows you to recognize/distinguish persons, so it might still be personal data. This might be the case especially when the UUID is used in long-lived cookies of website visitors, thus matching the GDPR's concept of an “online identifier”. This conclusion could be avoided by limiting reuse of UUIDs, e.g. creating a new UUID after some context-dependent appropriate duration. The GDPR does not require all data to be stored in the EU, but requires international transfers of personal data to have sufficient protections. If you're processing these data in countries without adequate legal protections (like the United States), additional safeguards have to be used. Pseudonymisation could be part of such safeguards, and has been suggested by some data protection authorities in the wake of the Schrems II ruling. However, pseudonymisation alone does not make the international transfer legal, it is more of a strategy to reduce remaining risks. I think that your systems has a good chance of being OK, but not neccessarily so. If in doubt, perform a DPIA and possibly consult your data protection authority under GDPR Art 36. If feasible, storing/processing data only in the EEA or in countries with an adequacy decision will simplify compliance. Safeguards such as pseudonymisation could be strengthened by rotating UUIDs, and by restricting access to the table with identifiers.