Privacy, in plain language.
Last updated: October 16, 2026
This policy explains what personal data the arthuremmanuel.com.br website processes, why, with whom it is shared, for how long and how you can exercise your rights under Brazil’s General Data Protection Law (Law No. 13,709/2018, “LGPD”) and Brazil’s Internet Civil Framework (Law No. 12,965/2014).
1. Who the controller is
The data controller is Arthur Emmanuel Oliveira Marinho, registered under Brazilian company number (CNPJ) 67.961.693/0001-50, working in software engineering, automation and AI in Lagoa Santa, Minas Gerais, Brazil.
Data protection officer (LGPD art. 41): Arthur Emmanuel, the controller, at arthuremmanuel.dev@gmail.com. This is the channel for questions, requests and complaints about your data.
2. What data we process and why
We process only what each purpose needs. The table shows the legal basis for each processing activity (LGPD art. 7).
| Data | Purpose | Legal basis |
|---|---|---|
| Connection data: IP address, date and time, page requested, browser and operating system | Deliver the site, keep it secure and prevent fraud and abuse | Legitimate interest (art. 7, IX) and legal obligation (art. 7, II; art. 15 of the Internet Civil Framework), where applicable |
| Network identifier transformed into an irreversible hash, and usage counters | Limit use of the virtual assistant and prevent abuse and undue costs | Legitimate interest (art. 7, IX) |
| Text of your messages to the virtual assistant and recent conversation history | Answer your questions about services and projects | Pre-contractual steps at your request (art. 7, V) |
| Microphone audio and transcripts, in voice mode only | Talk to the assistant by voice | Pre-contractual steps at your request (art. 7, V) |
| Name, company and needs you provide in the contact form or send by WhatsApp or e-mail | Reply to you and prepare a proposal | Pre-contractual steps at your request (art. 7, V) |
| Browsing data collected by Google Analytics: pages viewed, visit duration, traffic source, device type, browser, approximate location (city), page performance and interactions with the site (scrolling, clicks on contact and social buttons, options chosen on the pages, use of the calculator and the assistant). Never the text you type | Measure, statistically and in aggregate, how the site is used in order to improve it | Consent (art. 7, I), only if you accept |
We do not intentionally process sensitive personal data (art. 5, II). Do not send the assistant health or financial information, passwords or confidential data. There are no automated decisions affecting your interests (art. 20), and data is not used for advertising or marketing profiles.
5. International transfers
The providers above may store and process data on servers in the United States and other countries. These transfers rely on the grounds of LGPD art. 33, such as contractual clauses offered by the providers, the need to carry out pre-contractual steps you requested (art. 33, IX) and, for Google Analytics, your consent.
6. How long we keep data
- Assistant conversations: not saved in any website database; they stay only in your browser tab. Raw audio is not stored.
- Usage limit counters: only for the control window (minutes or one day), then deleted automatically.
- Hosting access logs: for the provider’s retention period and, where applicable, 6 months (art. 15 of the Internet Civil Framework).
- Contact messages: as long as needed to reply and negotiate and, if a contract follows, for the applicable legal periods.
- Google Analytics data: 2 months at event level; aggregated reports do not identify you.
Once the purpose ends, data is deleted or anonymized, except where LGPD art. 16 allows it to be kept.
7. Your rights
Under LGPD art. 18, you may, at any time and free of charge:
- confirm whether we process your data and access it;
- correct incomplete, inaccurate or outdated data;
- request anonymization, blocking or deletion of unnecessary or excessive data, or data processed unlawfully;
- request portability of your data to another provider;
- request deletion of data processed on the basis of your consent;
- know which entities we share your data with;
- be informed about the option not to consent and the consequences of refusing;
- withdraw consent, using the “Manage cookies” button on this page or the “Cookies” link in the footer;
- object to processing based on legitimate interest if the LGPD is not being complied with.
To exercise these rights, write to arthuremmanuel.dev@gmail.com. We may ask for information to confirm your identity. Confirmation and simplified access are immediate, and a full statement is sent within 15 days (art. 19). Since most of the data stays only in your browser, you can also delete it yourself by clearing the site’s data.
If you are not satisfied, you may file a petition with Brazil’s National Data Protection Authority (ANPD) at gov.br/anpd or with consumer protection bodies.
8. Security
We use encrypted connections (HTTPS), minimal collection, hashed identifiers, temporary credentials for voice mode, server-only API keys and restricted system access. No system is fully immune to incidents; if an incident may cause relevant risk or harm, we will notify the ANPD and the affected data subjects as required by LGPD art. 48.
9. Children and teenagers
The site is meant for companies and professionals and is not directed at people under 18. We do not knowingly collect data from children or teenagers. If you are a parent or guardian and believe this has happened, write to arthuremmanuel.dev@gmail.com so the data can be deleted.
10. Changes to this policy
This policy may be updated to reflect changes to the site or the law. The date at the top shows the version in force. If we change how cookies are used, we will ask for your choice again.
Questions: arthuremmanuel.dev@gmail.com.