Natalia Martos Díaz
CEO and Founder

Biography
Her experience has been forged in multinational corporations as well as in high-impact start-ups, in top-level law firms and currently in her own alternative legal services firm.
She has extensive experience as a corporate lawyer, institutional and regulatory manager specialising in the Internet, media and new technologies sector, both in the EU and in America. After founding her firm, Legal Army, she has worked extensively in the banking, healthcare, e-health, artificial intelligence, programmatic advertising, data and analytics, logistics, pharmaceutical, e-commerce and insurance sectors, among others.
She is an expert in corporate law, business law, new technologies, intellectual property, privacy and innovation, as well as in the digital transformation of all types of industries. She specialises in exponential technologies such as Artificial Intelligence, Machine Learning, Data Science, Blockchain as well as in new industrial sectors such as Fintech, Insurtech and especially Legaltech.
Natalia was a founder of the association ENATIC (Lawyers Specialising in New Technologies), was a member of the founding committee and a member of the founding board of directors of APEP (Association of Spanish Privacy Professionals), she became the first president of the Madrid Chapter of the IAPP (International Association of Privacy Professionals - Washington DC) for 2018 and 2019 and is a former president of Madrid Tech City.
She is currently a member of Inkietos, a partner of APEP, the IAPP, ELTA (European Legaltech Association), Barcelona Global, Barcelona Tech City, the Business Network for Diversity and Inclusion (REDI), part of LeDA (Legal Design Alliance), an ally of Demtech and regularly participates in Kinnernet events organised by Yossi Vardi in Israel and Latin America.
Collaboration
Natalia participates in national and international technology, digital and entrepreneurship events as a speaker, advisor and consultant to several companies in the digital and technology fields.
She is currently a mentor and investor in start-ups and a professor at various business schools.
Experiencie
Natalia Martos has spent most of her professional life at the PRISA Group, as an in-house lawyer, having started her career at what is now Prisa Digital and later as a lawyer to the Secretary General. She was subsequently General Counsel and Director of Privacy at the Spanish social network Tuenti until it was sold to Telefónica. After this stage, she returned to Grupo PRISA to lead the group's digital transformation for more than four years as Corporate Legal Director of Digital Business and Global Privacy Director, reporting directly to the Group's Chief Digital Officer. During her last two years at PRISA, she was Legal Director of Prisa Noticias and Prisa Brand Solutions.
After more than 12 years as a company lawyer, she began practising law in law firms, making her debut as a Partner at Andersen Tax & Legal, creating a new area of practice, ‘Privacy, IT & Digital Business’. Once established, she created and developed this same area of practice at the firm Pérez-Llorca, advising all types of industries in their digitisation processes, adaptation to the new Data Protection Regulations, as well as in all those activities related to business law, intellectual and industrial property, digital business, technological assets and, in general, in all the activities of the legal departments of companies of all sizes and industries.
After this period, at the beginning of 2018 he founded Legal Army, one of the first ALSPs in Spain where he developed the practice of technology law, intellectual property, innovation and privacy focused on exponential technologies applied to different sectors of the economy and using legaltech tools to multiply the efficiency of his team. In 2021, her firm, Legal Army, is included for the first time in the renowned international directory Chambers & Partners in the ALSP (Alternative Legal Services Provider) category. In 2022, it is once again listed in the directory as one of the most relevant ALSPs in Spain.
In 2022 and 2023, Natalia is awarded the Iberian Lawyers IP&TMT prize, as Advertising Lawyer of the Year 2022 and 2023 in Spain.
Studies
2021
Frontiers of Innovation and Entrepreneurship, Summer Executive Program.
Massachusetts Institute of Technology, Sloan School of Management
2010 - 2011
Executive Programme in Women and Leadership (scholarship awarded by the Rafael del Pino Foundation).
Recognitions
Natalia Martos has spent most of her professional life at the PRISA Group, as an in-house lawyer, having started her career at what is now Prisa Digital and later as a lawyer to the Secretary General. She was subsequently General Counsel and Director of Privacy at the Spanish social network Tuenti until it was sold to Telefónica. After this stage, she returned to Grupo PRISA to lead the group's digital transformation for more than four years as Corporate Legal Director of Digital Business and Global Privacy Director, reporting directly to the Group's Chief Digital Officer. During her last two years at PRISA, she was Legal Director of Prisa Noticias and Prisa Brand Solutions.
After more than 12 years as a company lawyer, she began practising law in law firms, making her debut as a Partner at Andersen Tax & Legal, creating a new area of practice, ‘Privacy, IT & Digital Business’. Once established, she created and developed this same area of practice at the firm Pérez-Llorca, advising all types of industries in their digitisation processes, adaptation to the new Data Protection Regulations, as well as in all those activities related to business law, intellectual and industrial property, digital business, technological assets and, in general, in all the activities of the legal departments of companies of all sizes and industries.
After this period, at the beginning of 2018 he founded Legal Army, one of the first ALSPs in Spain where he developed the practice of technology law, intellectual property, innovation and privacy focused on exponential technologies applied to different sectors of the economy and using legaltech tools to multiply the efficiency of his team. In 2021, her firm, Legal Army, is included for the first time in the renowned international directory Chambers & Partners in the ALSP (Alternative Legal Services Provider) category. In 2022, it is once again listed in the directory as one of the most relevant ALSPs in Spain.
In 2022 and 2023, Natalia is awarded the Iberian Lawyers IP&TMT prize, as Advertising Lawyer of the Year 2022 and 2023 in Spain.











Publications and Media
Expansión: Legal Army lanza su área de gobernanza en IA
Onda Cero: Podcast Julia en la Onda - Natalia Martos
Todojuristas: 100 Mujeres Referentes del Sector Legal [2025]
Forbes Lawyers: Legal Army se consolida en España
Confilegal: Las 3 barreras que frenan la sustitución de profesionales por la IA
Infolibre: Si violan a tu avatar, también te violan a ti
Cinco Días: Las ALSP afianzan en España una forma diferente de ejercer la abogacía
Natalia Martos Díaz - Abogada experta en privacidad y tecnología
Cinco Días: Las mejores ASLP: Legal Army
El Economista: ¿Es la Inteligencia Artificial el fin de los derechos de autor?
REDI: Principios de actuación y buenas prácticas en materia LGTBI+
WIRED: Las voces generadas por IA se vuelven indistinguibles de las humanas (también en español)
Todo Juristas: Cómo crear tu firma del Siglo XXI. Por Natalia Martos
Startup Oasis: Legal Army | Tecnología para liderar un ejército jurídico
Innovative Women in ICT: Natalia Martos, CEO of Legal Army
South Summit 2019: The hurdles nobody talks about when building legaltech
¿Decidirá Google lo que es verdad y lo que no? | España
Thinking Party 2018: Inteligencia Artificial | Sesión tarde (Español)
EnTerritorioLegaltech "Newlaw"
Fundación Telefónica: Sandy Parakilas | Facebookgate "soy dueño de mis datos"
Debates Ethic | La era de las máquinas
UNIR: El futuro del derecho de las TIC y la proteccin de datos UNIR
Mobile Week Barcelona 2017 Dileg Big Data vs privacitat i seguretat personal
Generación R: Cómo gestionar con éxito los despachos de abogados en la nueva era. Obra colectiva. Wolters Kluwer España Dec 2021
Innovación y Tendencias: Sector Legal 2020 Wolters Kluwer Legal Feb 2020
La adaptación al nuevo marco de protección de datos tras el RGPD y la LOPDGDD Wolters Kluwer Legal Feb 2019
El nuevo marco regulatorio derivado del reglamento europeo de protección de datos Wolters Kluwer Legal Mar 2018
La prestación del consentimiento según el RGPD El Economista Feb 2018
El Delegado de Protección de Datos: ¿Figura interna, externa o mixta? Aranzadi Actualidad Jurídica Dec 17, 2017
Se acerca el 25 de mayo de 2018. ¿Está su empresa adaptada al nuevo Reglamento de Protección de Dato Diario La Ley Nov 15, 2017
Alerta ‘legaltech’: ¿sustituirá la inteligencia artificial a los abogados? Retina / elpais.com Jul 2017
¿Por qué los medios de comunicación no pueden usar las fotos de Facebook? Crea Cultura (Atresmedia) Mar 8, 2017
Medios, redes sociales y nuevas leyendas urbanas de la Propiedad Intelectual Crea Cultura Blog Jun 14, 2016
Tuits y propiedad intelectual: ¿De quién son los tuits de @CarmelaRios? Crea Cultura Blog Dec 11, 2014
¿Cómo afectará la nueva legislación sobre 'cookies' al mundo digital? ElHuffingtonPost May 2013
Derecho y Redes Sociales (Segunda Edición) Civitas Aranzadi Thomson Reuters Mar 25, 2013
Punto de vista. Implicaciones jurídicas de las redes sociales. La protección del honor, la intimidad TELOS, Fundación Telefónica. Revista número 85 Oct 2010
Derecho y Redes Sociales (Primera Edición) Civitas Aranzadi Thomson Reuters Oct 2010