About me

I am a Systems Engineer and Privacy Researcher based in Barcelona, EU.

I am currently working at torproject.org. I lead the network health team making sure, along with many dedicated individuals in the Tor community, to ensuring the well-being of the Tor network, its nodes, and the community of operators. Our objetives are network security, functionality, and reliability for all users.

I was part of the Information Security Group in the Department of Telematics Engineering at Universitat Politècnica de Catalunya (UPC) where I got my Ph.D.

I research topics in the fields of privacy and anonymity online.

I was adjunct professor at Universitat Oberta de Catalunya (UOC) for a while.

This website is available under different domains that I have used through the years.

In no particular order:

nopressure.co.uk
hiro7.eu
sifr.tech

All redirect to: sifr.tech

You can read sifr as you would read cipher. In fact in the word "cipher" in the middle age meant "zero" and originated through French and Italian from the pre-islamic term sifr = zero - in Arabic صفر (see Zero Etymology).

You can reache me @: hey at sifr.tech

PGP/GPG public key available: https://db.torproject.org/fetchkey.cgi?fingerprint=DC399D73B442F609261F126D2B4075479596D580

I am on the fediverse:

mastodon.social

I like: surfing, swimming, skiing, mountainering and hiking. I have got two dog and two cats. If we were still in the '90s I would have displayed here my geek code.