au·di·tor
noun. From Latin audītor, “listener”.
In the age of artificial intelligence, the risk is not lacking systems: it is being unable to prove they work.
Fernando ArrietaAuditor and writer
- +800organisations audited in Latin America
- 97countries in the network of G-CERTI, which he leads in Latin America and the Caribbean
- 44signed principles and analysis pieces
- 11media outlets featuring his columns and coverage
Fields of work
Where claims are strongest and evidence is weakest.
ISO/IEC 42001
Artificial intelligence
An organisation should be able to explain who authorised a model, who corrects it and who is accountable for its decisions.
ISO/IEC 27001
Information security
Control over information should be demonstrated with evidence, rather than a policy left in a drawer.
ISO 9001
Quality
The management system should work in everyday operations, and the certificate should reflect the truth.
What organisations achieve
They move from making claims to demonstrating them: they certify their systems, train their own auditors and maintain the system when no one is watching.
Certificate presentations and training at audited organisations
Track record
Trust is built through work
Organizations that are part of my professional journey.
In others' words
«Orgulloso de haber realizado el diplomado. Gracias Fernando Arrieta, un profesor con todas las letras. Nos brindó todo su apoyo y nos transmitió su experiencia en el rubro. Formidable combinación.»
Mariano CrotolariGoogle review · G-CERTI training · 22 July 2026View source (Mariano Crotolari) «¡¡Sin duda alguna son los mejores!!!
Yo buscaba un lugar donde aprender fuera el enfoque y no finalizar una x cantidad de horas para un certificado o título. Me encontré a un grupo de profesionales que no solo eran expertos en lo que enseñaban, sino que contaba con una vocación de enseñar a otros con tacto y paciencia para no discriminar entre las diferentes capacidades de aprendizaje que se pueden encontrar en un grupo de personas. No fueron la primera institución a la que acudí, pero si la que siempre voy a elegir. Gracias a @fernando Arrieta y a @Elisandro Santos por la calidad de personas que son.»
Richard Peña SanchezGoogle review · G-CERTI training · 19 August 2024View source (Richard Peña Sanchez) «Cursé la ISO 42001 con Fernando Arrieta, muy práctica, muy entretenida, muy formadora.
Muchas gracias! hermosa experiencia.
Ya nos veremos en otra ISO!»
«nos ha apoyado en el logro de nuestra certificación de manera muy rigurosa, responsable y atenta»
«Feliz de haber conocido a GCERTI, aprendí muchísimo de la mano de Alfredo, Fernando y Alejandro, gracias por cada clase, y por compartir sus conocimientos y experiencias con nosotros. Fueron y siguen siendo muy enriquecedoras.»
Gabriela GuzmánGoogle review · G-CERTI training · 1 June 2023View source (Gabriela Guzmán) «Fernando realmente Gracias por tu aporte sobre Plan de Negocio»
«Más que agradecida con G-certi, un equipo formado por excelentes personas!!!! Súper recomendables!!!! Fernando siempre didáctico en sus explicaciones!!! Simplemente gracias!!!»
«Fernando es un excelente Líder»
«Exelente los Master y talleres que hacen. Agradezco infinitamente que nos hayamos cruzado. Gracias»
Limited engagements
Independent opinion.
For boards and committees that must decide before a critical audit, after an incident or before deploying an AI system. I read the evidence, state what holds and what does not, and put it in writing.
I take on few engagements at a time.
Criteria
How I read systems.
My latest writing:
Before delegating a critical decision to AI
NIS2 and DORA · how requirements reach Latin American suppliers by contract
ISO 37001:2025 · changes, transition and the link with Law 27.401
All writingsJudgement in writing
An auditor's thinking, signed.
PrincipleEvery claim must be demonstrated, or left unmade29 Apr 2026Conceptual illustration
Governed AIWhat to examine before delegating a critical decision to AI19 Sep 2026Conceptual illustration
Management systemsFalse certificates and the register created to curb them11 Jun 2026Conceptual illustration
Public presence
In the media and at the lectern.
Analysis
Auditing artificial intelligence
An AI-supported decision needs identifiable responsibilities, limits of use and evidence that allows its results to be reviewed. These readings examine what to verify before delegating a decision and how to maintain oversight.
What does your organisation need to demonstrate?
Tell me about your needs: certifying the system, preparing for an audit or training your team.