Windelborg

About

Sun, 22 Mar 2026 00:00:00 +0000

I am Julie Windelborg Nielsen. I work as a security architect protecting critical infrastructure in Denmark.

I am interested in security, privacy, cryptography and general IT operations.

My posts will probably be mostly how-to’s or other technical knowlegde that I hope some people can find useful.

Contact

My email is my first name at this domain. My proton mail is my first name at my middle name dot com. My signal is the initial for my first name, followed by my middlename .70. And my tuta email is my middle name at tuta dot io.

Using GrapheneOS in Denmark

Sat, 21 Mar 2026 00:00:00 +0000

Using GrapheneOS in Denmark

For a couple of weeks now I have been using GrapheneOS in Denmark. I wanted to have a secure phone and even more I wanted to have a phone that respected my freedom, that didn’t track me or sell my data.

Denmark is highly digitalized so you “need” a lot of apps to function well in Denmark. I have here combined a list of some of the apps that worked that I wasn’t sure to begin with and some of the apps that didn’t work.

How to generate a secure PGP key

Sun, 26 Oct 2025 00:00:00 +0000

Generate the key

The goal is to make a secure and modern PGP key.

The primary key should only be used to sign my Subkeys, it should expire in 10 years.

gpg --expert --full-generate-key
> (11) ECC (set your own capabilities)
> (S) Toggle the sign capability # Remove sign capability
> (Q) Finished
> (1) Curve 25519 *default*
> 10y
> Real name: Julie Windelborg Nielsen
> Email address: REDACTED
> (O)kay
gpg --expert --edit-key DD58DE9A16E5F7A5657CC5A872013DD9A8B991DA
> addkey
> (10) ECC (sign only)
> (1) Curve 25519 *default*
> 5y
> addkey
> (12) ECC (encrypt only)
> (1) Curve 25519 *default*
> 5y
> addkey
> (11) ECC (set your own capabilities)
> (S) Toggle the sign capability # Remove sign
> (A) Toggle the authenticate capability # Add authenticate
> (Q) Finished
> (1) Curve 25519 *default*
> 5y
> save
> -----
> sec ed25519/72013DD9A8B991DA
> created: 2025-10-25 expires: 2035-10-23 usage: C
> trust: ultimate validity: ultimate
> ssb ed25519/0CF393A64DB64668
> created: 2025-10-25 expires: 2030-10-24 usage: S
> ssb cv25519/6D64DF9B6A10C7AF
> created: 2025-10-25 expires: 2030-10-24 usage: E
> ssb ed25519/5D68F7D4B2ACC5E2
> created: 2025-10-25 expires: 2030-10-24 usage: A
> [ultimate] (1). Julie Windelborg Nielsen <REDACTED>

PGP Public Key