Privacy policy


Aware of the importance of ensuring the confidentiality of data, MAC ALYSTER makes strong commitments with regard to the protection of personal data. Therefore, the purpose of this Data Protection Policy is to inform you about the commitments and practical measures taken by MAC ALYSTER to ensure the respect of your personal data. This Data Protection Policy may evolve depending on the legal and regulatory context, as well as the opinions issued by both the National Commission for Informatics and Liberties and the European Data Protection Committee. This privacy policy presents the processing we do of your personal data and the way in which we create, organize and implement our online and offline activities.

The cookie management is available on a separate page.

We attach great importance to respecting the privacy and individual data of our users. We are committed to respecting and providing simplified tools and procedures to enable you to assert your rights in accordance with the French Data Protection Act (Loi “Informatique et Libertés” n°78-17 of January 6, 1978, as amended) and the European General Data Protection Regulation (Regulation n° 2016/679). In order to maintain maximum protection for the personal data we process, our website and the entities managing it (host, IT service providers) will comply with the principles set out in national and community texts.

Data collected and purposes of collection

The specific practices described in this privacy policy statement apply only to the aforementioned website. If there are external links to other partner entities associated with MAC ALYSTER on our site, we recommend that you review their own privacy policy statements and we cannot be held responsible for their policy and content. In general, you can visit our website without disclosing any personal information. The only personal data we collect and store is that which you provide when filling out the registration form. In the registration form, we may collect your :
  • Last Name
  • First name
  • Phone number
  • Postal code
  • Email
Your data is only used by MAC ALYSTER for the purpose of processing your request. With your consent, they may also be transmitted to our partners and subcontractors (installers, manufacturers) with whom we carry out financing offers related to the Energy Savings Certificates scheme. The purpose of the data collected by MAC ALYSTER is solely to be able to constitute a file in accordance with the rules of the art in order to carry out the mission for which it was requested. In accordance with Article 5 of Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, we process personal data lawfully, fairly and transparently with regard to the data subject; and we collect this data for specific, explicit and legitimate purposes, namely the constitution of the file for the various intervention solutions of the company MAC ALYSTER. We only collect data that is adequate, relevant and limited to what is necessary in view of the purposes of the missions of the company MAC ALYSTER.

Information about the requirement to provide data

For contractual purposes and to carry out our mission, the transmission of certain personal data is necessary for the conclusion of the contract between MAC ALYSTER services and its prospective clients.

Data retention

MAC ALYSTER retains data of non-client users for prospecting purposes for a period of three years from their collection or last contact.

Data transfers

As part of the services provided, your data is not transferred outside of the European Union and adequate countries within the meaning of the GDPR, except for standard contractual clauses signed with our subcontractors located outside of the European Union, in accordance with Articles 44 to 49 of the GDPR. In the case of financing through the Energy Saving Certificates scheme and with your consent, your data is only transferred to our partners and subcontractors (installers, manufacturers) with whom we offer financing solutions related to the Energy Saving Certificates scheme.


MAC ALYSTER ensures the security of your personal data by implementing enhanced data protection through the use of physical and logical security measures.

Your rights

In accordance with the Informatique et Libertés regulations, you have the right to access, rectify, erase, restrict processing, data portability, withdraw your consent and define the fate of your data after your death regarding all data concerning you, which can be exercised with the data protection officer by email at the following address: or by postal mail to the following address: 37 Boulevard de Strasbourg, 93600 Aulnay-sous-Bois, France accompanied by a signed copy of an identity document. You can also file a complaint with a supervisory authority, the Commission Nationale Informatique et Libertés.

Right to object

In accordance with the provisions of Article 21 of the General Data Protection Regulation (GDPR), Regulation EU No. 2016/679 of 27 April 2016, you have a right to object. You may at any time object to the processing of your data for commercial prospecting purposes by contacting us via our website at the following address If your objection request does not relate to commercial prospecting, your request must specify the reasons related to your particular situation. MAC ALYSTER may justify its refusal for the following reasons :
  • There are legitimate and compelling reasons to process the data or that they are necessary for the establishment, exercise or defense of legal claims;
  • You have given your consent – you must then withdraw this consent and not object;
  • A contract binds you with MAC ALYSTER ;
  • A legal obligation that requires us to process your data ;
  • The processing is necessary for the protection of the vital interests of the data subject or of another natural person.


For any inquiries regarding the personal data protection policy implemented by MAC ALYSTER, you can contact us at