Anonymization with Microsoft PresidioNo contract content in logs
We record only whether the operation succeeded and how long it took. The contract text, names, and document data are never included.
Anonymization with Microsoft Presidio
Contract anonymization for AI
Maurelius removes details that could identify people or companies. Only the protected copy can then be passed to AI for analysis.
- Anonymized before AI analysis
- Contract content is not logged
- Documents are not retained
Compare the contract before and after anonymization
See which details are replaced before AI analysis using a fictional contract excerpt.
Original document
Fictional contract before anonymization
UMOWA O ŚWIADCZENIE USŁUG PRAWNYCH zawarta 12 maja 2026 r. w Warszawie pomiędzy: Baltic Horizon sp. z o.o. z siedzibą przy ul. Grzybowskiej 15, 00-132 Warszawa, wpisaną do rejestru przedsiębiorców KRS pod numerem 0000123456, NIP 525-000-12-34, REGON 012345678, reprezentowaną przez Martę Lewandowską, PESEL 90010112345, kontakt: marta.lewandowska@baltic-horizon.example, tel. +48 501 234 567, a Piotrem Zielińskim, zamieszkałym przy ul. Długiej 8/4, 80-831 Gdańsk. § 1. Zleceniobiorca przygotuje opinię prawną do 30 czerwca 2026 r. § 2. Wynagrodzenie wynosi 18 500,00 zł netto i zostanie zapłacone na rachunek PL61 1090 1014 0000 0712 1981 2874. Wszystkie dane użyte w tym przykładzie są fikcyjne.
Anonymized document
Identifying details replaced with neutral labels
UMOWA O ŚWIADCZENIE USŁUG PRAWNYCH zawarta 12 maja 2026 r. w Warszawie pomiędzy: [FIRMA_1] z siedzibą przy [ADRES_1], wpisaną do rejestru przedsiębiorców KRS pod numerem [KRS_1], NIP [NIP_1], REGON [REGON_1], reprezentowaną przez [OSOBA_1], PESEL [PESEL_1], kontakt: [EMAIL_1], tel. [TELEFON_1], a [OSOBA_2], zamieszkałym przy [ADRES_2]. § 1. Zleceniobiorca przygotuje opinię prawną do 30 czerwca 2026 r. § 2. Wynagrodzenie wynosi 18 500,00 zł netto i zostanie zapłacone na rachunek [IBAN_1]. Wszystkie dane użyte w tym przykładzie są fikcyjne.
No data retention
Your contract does not stay with us
The text is used once to create an anonymized copy. We do not store the document, build a history of it, or keep a copy that can be accessed later.
No server-side copy
Neither the original nor the anonymized copy is stored in a database or archive. Once processing ends, Maurelius has no copy to return to.
Used only during anonymization
The text exists only long enough to create the protected copy. The result stays visible in your browser, but the service does not retain it.
Still have questions? Read our FAQ.
Privacy first, AI second
What happens to the document?
The system first creates a copy without identifying information. Only that protected copy can be passed to AI for analysis.
- 01
You provide a contract
The process receives text containing party, representative, and contact details.
Anna Kowalska · PESEL · address - 02
Presidio detects sensitive data
Detection mechanisms find the information that needs to be protected.
PERSON · COMPANY · TAX ID · IBAN - 03
A protected copy is created
Detected data is replaced with neutral labels that cannot be reversed.
[PERSON_1] · [COMPANY_1]Data protected - 04
Only the copy goes to AI
The original text is not passed to the AI model.
Anonymized content only - 05
Maurelius analyzes the document
Maurelius can assess clauses and risks without access to names or identifiers.
Clauses · risks · recommendationsAnalysis in Maurelius
Two deployment models
Where does processing take place?
Use Maurelius SaaS or run the entire process in your own cloud. In both models, data is anonymized before it reaches AI.
Maurelius SaaS
Maurelius creates a protected copy in a secure environment. Only that copy can be sent to AI. We do not store the document or include its content in logs.
Outside the cloud
User
Provides the contract text
encrypted connection
MAURELIUS SAAS INFRASTRUCTURE
Stage 1
Document extraction
No document storage
Stage 2
Microsoft Presidio
Detects and hides data
Stage 3
Protected copy
Neutral labels replace identifying data
anonymized text only
Separate boundary
AI model
Does not receive the original data
The same rule applies: the AI model can receive only an anonymized copy. The original identifying data is never passed to it.
Frequently asked questions
Privacy without technical jargon
Straightforward answers to the most important security and privacy questions.