John Walton

John Walton is chief information security officer of Nubank, a role the company announced from São Paulo on June 8, 2026. Reporting to chief technology officer Eric Young, Walton leads Nubank's information security strategy, work the company frames as protecting its platform, customers and operations while supporting its long-term growth agenda.

Career path

Walton joins Nubank with more than 25 years in security and engineering leadership roles at technology companies. Immediately before Nubank, he served as Deputy Chief Information Security Officer at Electronic Arts, after first holding the role of Vice President, Enterprise Security there. Before EA, he spent more than 16 years at Microsoft across a series of senior leadership roles, including Vice President, Security Engineering. The company describes his experience as spanning secure product development, global security operations, cyber risk governance and regulated cloud environments.

How the hire was framed

Eric Young, Nubank's chief technology officer, said the hire reflected a track record of leading security at consumer scale in one of the most demanding digital environments in the world, protecting hundreds of millions of users from real-time, adversarial threats. For his part, Walton pointed to Nubank's reach, saying few organizations in the world combine technical ambition with a mission that touches the financial lives of so many people.

CSO Online's own running column of executive security appointments, updated September 7, 2026, independently records the hire and Walton's more-than-25-year background in security and engineering leadership, describing Nubank itself as a digital financial services platform.

Neither source fetched for this profile gives exact dates for Walton's Electronic Arts or Microsoft postings, only their length and sequence.