# oleguer.cat

> Personal website of Oleguer Serra Boixaderas (Oleguer Serra), an electronic engineer from Badalona (Catalonia) specialised in cybersecurity and artificial intelligence. He founded one of the first Internet companies in Catalonia in 1996, has worked as a consultant for nonprofit organizations, and holds a Master's degree in Cybersecurity and Privacy. He writes about technology, security, privacy, AI and personal interests.

The site is published in four languages: Catalan (https://oleguer.cat/ca), English (https://oleguer.cat/), Spanish (https://oleguer.cat/es) and French (https://oleguer.cat/fr). All content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0).

Contact: contact form on the home page. Profiles: https://www.linkedin.com/in/oleguer/ , https://bsky.app/profile/oleguer.cat , https://x.com/oleguerserra

## Articles (English)

- [The day the peninsula went dark… and coverage crashed](https://oleguer.cat/en/the-day-the-peninsula-went-dark-and-coverage-crashed): The Iberian blackout of 28 April 2025 also collapsed mobile coverage; backup generators on antennas would cost less than one cent per line per month if regulation demanded it.
- [If you don't pay for the product, you are the product](https://oleguer.cat/en/if-you-dont-pay-for-the-product-you-are-the-product-the-dark-side-of-giving-away-data-to-AI): How freely shared personal data fuels AI and undermines privacy, and why the GDPR is insufficient.
- [Incorporating an organization's knowledge into an AI](https://oleguer.cat/en/incorporating-organization-knowledge-AI): Two practical options — Botpress and a RAG system built with Milvus and Gradio.
- [Marlene Dietrich and the Devil](https://oleguer.cat/en/marlene-dietrich): A chance encounter on the metro that turns into a story about cinema, memory and faith.
- [Darknet Diaries](https://oleguer.cat/en/darknet-diaries): A recommendation of Jack Rhysider's podcast about hacking, scams and real cybercrime stories.

## Articles (Catalan)

- [El dia que la península es va enfosquir… i va petar la cobertura](https://oleguer.cat/ca/el-dia-que-la-peninsula-es-va-enfosquir-i-va-petar-la-cobertura)
- [Si no pagues pel producte, ets el producte](https://oleguer.cat/ca/si-no-pagues-pel-producte-ets-el-producte-la-cara-fosca-de-regalar-la-IA)
- [Incorporar el coneixement d'una organització a una IA](https://oleguer.cat/ca/incorporar-coneixement-organitzacio-inteligencia-artificial)
- [Marlene Dietrich i el diable](https://oleguer.cat/ca/marlene-dietrich)
- [Darknet Diaries](https://oleguer.cat/ca/darknet-diaries)

## Optional

- [Spanish versions](https://oleguer.cat/es)
- [French versions](https://oleguer.cat/fr)
- [Sitemap](https://oleguer.cat/sitemap.xml)