Privacy policy

Last updated: November 3, 2026. Software: Kitewire. Responsible party: RNG Desenvolvimento.

What stays on our server

For one computer to find another, Kitewire uses a rendezvous server of ours. It stores only:

• the computer's ID (the nine numbers shown on screen);
• the computer's public key, created on the device itself the first time Kitewire opens.

For the Kitewire in numbers page, the server also keeps, for each connecting device (via a hash of the public key, not by ID):

• the system (Windows, Linux, macOS, Android, or iOS), reported by Kitewire itself;
• the country it connected from, inferred from the network address at the time of connection, without storing the address;
• the day it last appeared.

The page shows totals only. Devices that have not appeared for 90 days are removed from the count and deleted.

We do not store names, e-mail addresses, network addresses, connection history, or records of who accessed whom.

To prevent abuse, the server counts how many requests arrive from each location per minute using a network address hash that cannot be reversed. This count disappears on its own after one minute.

What travels over the internet during a session

When connecting, the two computers exchange network addresses through the rendezvous server to speak directly with each other. After that, they talk directly whenever the network allows.

When a direct connection is not possible, the session passes through a relay server of ours. Even so, the content remains end-to-end encrypted: the relay only forwards the packets and cannot read the screen, sound, keyboard, or clipboard.

The password never travels over the network. Kitewire proves both sides know the same password without sending it.

Anyone who only knows a computer's ID cannot find its network address: the address is only sent to whoever entered the correct password.

What stays on your computer

• The computer's private key, which never leaves it.
• If you set a fixed password, only a value derived from it (Argon2id with salt), from which the password cannot be recovered.
• The computers you saved to connect without a password: the public key and name of each one.
• The log of access to this computer: when, for how long, from which network address, with which computer name, and whether access was accepted. Stores the last 500 connections so you can check who connected.
• The computers you connected to and the key for each, to reject connections if someone impersonates them.
• Your preferences, such as starting with the computer.

These files are located in the Kitewire data folder under your user account and, with the system service installed, also in the system folder accessible only by administrators. They disappear when you delete the folders.

All of this is encrypted with a key bound to this computer: on Windows through the operating system's own data protection, and on Linux through the computer key readable only by administrators. Copied to another computer, the files will not open and cannot be used to log in anywhere. On Mac the files are also encrypted, but until a future release, the key stays in the same folder.

This website

The kitewire.com.br website does not use cookies, has no analytics tools, and loads nothing from third parties: the font and images come from the website itself. Like any website, the server receives the visitor's network address to deliver the pages.

Who data is shared with

Kitewire servers (the rendezvous server, the relay, and this website) run on Cloudflare's infrastructure, which operates them for us and may process data outside of Brazil. Other than Cloudflare, no one receives data from Kitewire. We do not sell or share data with third parties.

Your rights

Under the Brazilian General Data Protection Law (LGPD), you can request to know what we hold about your computer and request that it be deleted. Since we only store the ID and public key, deleting means the computer gets a new ID the next time Kitewire opens.

Contact

Questions or requests: [email protected].