Ksibi, Ahmed2025-09-242025-09-242017Bonnel, Sylvie and Oury, Clément. “Selecting websites in an encyclopaedic national library: a shared collection policy for internet legal deposit at the BnF”, 2014 British Library. British Library digital preservation strategy 2013 – 2016, 2013. Canadian Heritage Information Network. Digital Preservation Toolkit, 2013. CENL/FEP Statement on the Implementation of (Statutory and Voluntary) Deposit Schemes for Non-Print Publications, FEP and CENL, 2012 Digital Legal Deposit, an IPA [International Publishers Association] Special Report, 2014 Digital Preservation Coalition, Digital Preservation Handbook Definitions and Concepts, 2008 Helmus, W. “Survey on selection and collecting strategies of born digital heritage - best practices and guidelines”, 2015 InterPARES 2 Project. InterPARES 2 Project Dictionary, 2015. InterPARES 2 Project. “Preserver Guidelines - Preserving Digital Records: Guidelines for Organizations”, 2007 ISO,Information and documentation — Statistics and Quality Indicators for Web Archiving, 2013 (draft available). ISO 16175-1:2010(E) Information and documentation – Principles and functional requirements for records in digital office environments – Part 1: Overview and statements of principles, 2010. Netherlands Cultural Heritage Agency. “Assessing Museum Collections: Collection Valuation in Six Steps”, 2014. UNESCO. Charter on the Preservation of Digital Heritage, 2003 UNESCO/PERSIST. Guidelines for the selection of digital heritage for long-term preservation. Paris :UNESCO,2016 Verheul, I. “Networking for Digital Preservation: Current Practice in 15 National Libraries”, München: Saur, 2006https://repository.ifla.org/handle/20.500.14598/6139Social networks have generated a pervasive “digital boom” all aspects of life in all areas. Heritage institutions- libraries, archives documentation services - traditionally bear the responsibility of preserving the intellectual and cultural resources produced by all of society. Libraries must produce and process digital data of Web 2.0 their role in civic information. Currently, the data collected on the natural or legal persons are being treated as a commodity data that are rented to companies, governments by data brokers. Treatment of digital heritage to the memory of mankind, it is imperative to respect the declarations of principles, charters, standards issued by international organizations and intergovernmental documentary: UNESCO, IFLA and ICA. To preserve digital memory, a collaborative effort needs to be accomplished by libraries and their institutions to develop strategies, contributing to better protection of digital data.fraAttribution 4.0 Internationalhttps://creativecommons.org/licenses/by/4.0/Articlehttps://sierre2017.wordpress.com/open access-