Deloitte, a global consulting firm, and Docaposte, a French company specializing in secure digital identity solutions, have released a white paper addressing the growing threat of AI-enhanced fraud in banking and insurance. Published on Tuesday, September 15, 2026, the report introduces a concept called a "trust firewall," designed to protect digital records from being manipulated by deepfake technology. The white paper highlights that 4.2 billion euros were lost to payment fraud in the European Economic Area in 2024, with the figure expected to rise as generative AI becomes more advanced, enabling the creation of realistic voices, faces, and documents that can be used for deceptive purposes. The framework proposed in the white paper focuses on shifting the approach to fraud prevention from reacting to incidents after they occur to being able to prove the legitimacy of transactions long after they are completed. The "trust firewall" involves five key checks at each critical stage of a customer's digital interaction: verifying the individual's identity, confirming their right to act on their behalf, securing explicit consent, clearly communicating the operation performed, and maintaining a reliable, dated record of the entire process. These checks are intended to serve as verifiable evidence in case of disputes or during regulatory investigations. The white paper emphasizes the importance of tailoring verification levels to the risk involved in each transaction. For instance, low-level checks might be sufficient for simple account updates, while high-level checks would be required for actions that could alter financial status, such as transferring large sums or changing ownership. Julien Maldonato, an associate at Deloitte France, explains that knowing who owns an account does not necessarily confirm that the transaction was conducted by that person and not by an imposter. Loïc Balaÿ, director of the Insurance Market at Docaposte, suggests that the European digital wallet must allow for identity verification from the start of the process, similar to a pre-validated digital identity card. European regulations are driving the need for stronger fraud prevention measures. The eIDAS 2.0 regulation outlines the arrival of the EUDI Wallet, a future European digital wallet that will enable individuals to store verified identity information for use across various services. This wallet will become mandatory for banks and insurers to accept starting December 2027. Additionally, the European anti-money laundering regulation (AMLR) will require banks to more rigorously verify the identities of their customers. An implementing regulation from December 16, 2025, sets technical standards for digital archiving to ensure that digital records have real legal value in court. Deloitte will assist banks and insurers in identifying high-risk areas for fraud and estimating the associated costs, while Docaposte will handle the technical implementation using certified tools. The two partners plan to identify the most vulnerable customer processes within 90 days and begin initial tests, while also considering alternatives for customers who are less comfortable with digital solutions. The proposed framework aims to reduce fraud, minimize disputes, enhance the customer experience, and transform digital evidence into a valuable asset for financial institutions.