Privacy by design is an engineering principle that has been around for some time now. It's even been incorporated into legal frameworks since the 1990s (most prominently in the EU GDPR), and is a simplified term for "data protection through technology design". It means that privacy is a part of the entire systems design concept, implemented even before hard- or software is built. In other words, it ensures that privacy is part of the DNA of the product. However, to truly understand the full scope of privacy by design, we have listed the seven principles established by Ann Cavoukian below.  

The 7 principles of privacy by design

In 2009, Ann Cavoukian published the privacy by design framework, which has since been adapted and also at times criticised for being too vague. However, in order to truly understand the nature of the privacy by design engineering principle, we lay it out for our readers anyway:

  1. Proactive not Reactive; Preventative not Remedial:
Privacy by Design does not wait for privacy risks to materialize, nor does it offer remedies for resolving privacy infractions once they have occurred — it aims to prevent them from occurring.
  1. Privacy as the Default Setting:  
No action is required on the part of the individual to protect their privacy — it is built into the system, by default.
  1. Privacy Embedded into Design
It is not bolted on as an add-on, after the fact. The result is that privacy becomes an essential component of the core functionality being delivered.
  1. Full Functionality — Positive-Sum, not Zero-Sum
Privacy by Design seeks to accommodate all legitimate interests and objectives in a positive-sum “win-win” manner, not through a dated, zero-sum approach, where unnecessary trade-offs are made.  
  1. End-to-End Security — Full Lifecycle Protection
Strong security measures are essential to privacy, from start to finish. This ensures that all data are securely retained, and then securely destroyed at the end of the process, in a timely fashion.
  1. Visibility and Transparency — Keep it Open
Its component parts and operations remain visible and transparent to users and providers alike. Remember, trust but verify.
  1. Respect for User Privacy — Keep it User-Centric
Keep the interests of the individual uppermost by offering such measures as strong privacy defaults, appropriate notice, and empowering user-friendly options.

Why is privacy by design important?

Privacy by design is an important engineering principle that ensures better privacy protection of digital service users. We believe that only those programs, apps and other digital services that follow the 'privacy by design' principle can truly be called privacy apps. Two opposite examples are Facebook and Signal. Signal is privacy by design, while Facebook is not. There are many other examples for privacy by design systems. A decentralised storage may be, for instance, a system that follows privacy by design, or an app that does not undertake any data tracking. Xayn follows both approaches.  

Privacy by design and GDPR

The notion of privacy by design is anchored in the Art. 25 GDPR 'Data protection by design and by default'. There are two main points to the article, which we will summarise here:

  1. The controller is obliged to [...implement appropriate technical and organisational measures...] to protect the individuals' data. As data-protection measures, the GDPR mentions for instance pseudonymisation or data minimisation, however there are many more ways to proceed here. And of course, GDPR also takes into account the cost of implementing state of the art measures, as well as the nature of the data.
  1. The second point to privacy by design according to GDPR is that the controller is obliged to implement appropriate technical and organisational measures for ensuring that, by default, only personal data which are necessary for each specific purpose of the processing are processed. This applies in particular [ the amount of personal data collected, the extent of their processing, the period of their storage and their accessibility].

As you can see, the article is relatively vague when it comes to what privacy by design means. While an absolute milestone in privacy laws, the GDPR has widely been criticised for its broad scope and legal 'wiggle room'. Therefore, we recommend users to not have a false sense of security when it comes to the EU directive.

We are using cookies to optimise your experience on By clicking “Allow all,” you agree to the storing of cookies on your device for our website to work reliably and customise content or ads for you. For more details, please refer to our cookie policy.