Privacy

Last updated 28 October 2026

The short version. What you type into the tools stays in your browser. Google Analytics counts your visit only if you click Accept, and you can change your mind at any time.

Who I am

daowolf.com is my personal website. I'm Oleg Desantis, and I decide how the little data it handles is used, which makes me its "controller" under UK data protection law. To ask me anything about it, message me on LinkedIn.

What stays on your device

The tools, such as System Design Quest and the Initiative Playbook, save your progress in your browser's local storage so you can carry on later. That data never leaves your device: nothing you type, answer or enter is sent to me or anyone else. To delete it, clear this site's data in your browser settings.

Counting visits

I use Google Analytics to see which pages are read and how people found them, so I can improve the site. It runs only if you click Accept when the site asks.

If you accept, it sets two cookies (_ga and _ga_ followed by an ID) that expire when you close your browser. The _ga cookie holds a random ID that tells your page views apart until then. It sends Google the address of the page, the page that linked to it, your browser and device details, and your rough location, which Google works out from your IP address. Google doesn't store your IP address. The site tells Google not to use any of this for advertising.

Google processes this data for me under its data processing terms, and may do so outside the UK, including in the United States under the UK-US "data bridge", which Google has signed up to. Google keeps the detailed records for no more than 14 months; the reports built from them hold only totals. Google explains more in How Google uses information from sites or apps that use our services.

If you reject, or don't answer, nothing is sent to Google Analytics and no analytics cookies are set. If your browser sends Do Not Track or Global Privacy Control, the site takes that as a no and doesn't ask, unless you've already accepted here.

The site remembers your answer in your browser's local storage for 6 months, then asks again. To change your mind, use "Cookie settings" at the bottom of any page. Rejecting after accepting deletes the cookies.

Hosting

Amazon Web Services (CloudFront and S3) delivers the pages. Like any host, it processes your IP address and browser details to deliver them and keep them secure.

Fonts

The fonts come from Google Fonts, so your browser fetches them from Google, which sees your IP address.

Other sites

Links to GitHub, LinkedIn and Miro lead to sites with their own privacy policies.

Why I'm allowed to do this

Analytics runs only with your consent, which you can withdraw at any time. Hosting and fonts rely on my legitimate interest in running the site.

Your rights

You can ask what I hold about you, or ask me to delete it. I can't link the analytics data to your name, so usually there's nothing I can find. Where I rely on my legitimate interest, you have the right to object to it. You can also complain to the Information Commissioner's Office at ico.org.uk.