Security, Privacy & Tech Inquiries

Lukasz Olejnik

I write about security, privacy, Web, technology and tech policy matters.

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23 Feb 2021 on research, privacy, web browser, web, w3c, consent, data breach, gdpr

Large-scale Analysis of DNS-based Tracking Evasion - broad data leaks included?

User tracking technologies are ubiquitous on the web. In recent times web browsers try to fight abuses. This led to an arms race where new tracking and anti-tracking measures are being developed. The use of one of such evasion techniques, the CNAME cloaking technique is recently quickly gaining popularity. Our…

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16 Aug 2019 on privacy, data protection impact assessment, dpia, data breach

On privacy impact assessment and leaking data of millions of users

Organizations voluntarily creating big public data breaches are rare. Recently it became widely known that the Public Transport Victoria (PTV) published a dataset of possibly over 15 million users. It was “anonymized”, but PTV may now still face a $336,000 data protection fine. How did this happen? Data Science…

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12 Feb 2019 on gdpr, privacy regulation, data breach

Should we expect less secrecy about GDPR performance?

Chances are that you may have heard about General Data Protection Regulation (GDPR) by now. Even if not from expert circles, training or media reporting, then certainly you must have felt the remarkable experience from the reinforced cookie pop-ups (a fact not difficult to predict in advance). But more seriously,…

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13 Nov 2017 on gdpr, dpia, data breach

Organizations must inform users about privacy breaches

By now everyone should be familiar with the phenomenon of massive data breaches. It’s no longer news when you can read about private data leaks and breaches in daily press on a regular basis. It’s a trend that one must accept. It just happens. But I find it…

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