TL;DR: Decentralized identity is being positioned as a way to reduce oversharing, repeated verification, and API-heavy fraud exposure in European finance as eIDAS 2.0 expands wallet-based trust flows across banks, insurers, and fintechs, according to Ping Identity. The governance issue is not just portability, but how IAM, consent, and assurance controls are reworked around user-held credentials.
At a glance
What this is: This is an analysis of decentralized identity in European finance and the way eIDAS 2.0 shifts trust, verification, and consent from central databases toward user-held credentials and wallet-based authentication.
Why it matters: It matters because IAM teams in banking, insurance, and fintech must decide how to integrate wallet flows, consent controls, and strong authentication without weakening assurance or creating new fraud paths.
Context
European finance has long relied on fragmented identity schemes, repeated verification, and centrally stored customer data, which raises friction and increases breach exposure. Decentralized identity changes the control point by letting users hold verifiable credentials in wallets and present only the attributes needed for a transaction.
The governance issue is not simply portability. eIDAS 2.0 expands wallet-based trust into regulated financial services, so IAM, consent, and strong authentication have to work across borders, relying parties, and existing applications. That creates a programme-level question for banks, insurers, and fintechs rather than a narrow digital wallet implementation problem.
The article frames this as a typical response to modernisation pressure in European finance: a policy-led identity shift, not an isolated product or channel change.
Key questions
Q: How should financial services teams integrate decentralized identity into existing IAM programmes?
A: They should treat decentralized identity as an integration layer, not a replacement for IAM. The core tasks are credential verification, consent management, assurance mapping, and revocation handling. Teams need to preserve their current authentication, audit, and policy controls while adding wallet-based trust flows through standards such as OpenID Connect and OpenID4VP.
Q: Why does decentralized identity matter for fraud prevention in financial services?
A: It matters because wallet-based, out-of-band approval reduces dependence on reusable personal and payment data that attackers exploit in browser and API-driven fraud. When verification is bound to the holder, device, and local approval step, attackers face a higher bar than simply stealing stored identity data.
Q: What are the main governance risks in wallet-based identity flows?
A: The main risks are weak issuer trust, poor revocation handling, inconsistent assurance levels, and unclear consent records. If those controls are not explicit, selective disclosure can create uncertainty about what the relying party is allowed to trust, which turns portability into fragmented decision-making instead of stronger governance.
Q: What should organisations review before replacing centralised login with decentralized identity?
A: They should review whether their existing SSO, identity proofing, and account recovery processes can support portable credentials without breaking auditability. The key question is not whether the wallet works, but whether the enterprise can still explain who authenticated, what was shared, and why access was granted.
Technical breakdown
How verifiable credentials and DIDs change trust establishment
Verifiable credentials are digitally signed assertions about a person, while decentralized identifiers, or DIDs, point to the keys used to verify those assertions. Together they let a verifier confirm a claim without querying a central identity database at every step. That changes the trust model from repeated data collection to cryptographic proof and selective disclosure. In financial services, this matters because the issuer, holder, and verifier each keep distinct roles, which reduces unnecessary data movement but also creates new dependencies on wallet integrity, revocation, and interoperability.
Practical implication: Practitioners need to map wallet-issued credentials into existing identity proofing and federation flows rather than treating them as a separate channel.
Why wallet-based authentication reduces API and fraud exposure
The wallet model can move high-risk interactions out of browser autofill, stored card data, and fragile API-only journeys. If a user confirms a transaction inside the wallet with device binding, biometric step-up, or liveness checks, the relying party gets stronger assurance that the holder is present at the point of use. That does not eliminate fraud, but it makes intercepted credentials harder to reuse and forces attackers toward device compromise instead of remote replay. The key technical shift is from static trust in credentials to transaction-time proof of control.
Practical implication: Security teams should evaluate where out-of-band wallet confirmation can replace brittle high-value flows such as onboarding and payment approval.
How IAM becomes the control plane for wallet integration
IAM sits between the wallet, the relying application, and the back-end policy layer. In practice, that means OpenID Connect, OpenID4VCI, OpenID4VP, and SIOPv2 have to connect credential issuance, presentation, and consent decisions without breaking existing SSO patterns. The hard part is not just protocol support. It is maintaining assurance, attribute governance, and auditability when identity evidence is portable and selectively disclosed. Without disciplined integration, decentralization can create fragmented trust decisions even while reducing data exposure.
Practical implication: IAM architects should define where wallet credentials are accepted, how consent is recorded, and which assurance signals are required for step-up.
Threat narrative
Attacker objective: The attacker aims to bypass brittle centralized identity checks and complete account access or payment fraud with reusable identity material.
- Entry begins when an attacker targets high-value financial identity flows that still depend on repeated data entry, stored credentials, or API-heavy federation.
- Credential abuse follows when stolen identity data or replayed session material is reused across centralized verification points that were never designed for out-of-band proof.
- Impact occurs when fraud succeeds because the relying party cannot distinguish a legitimate wallet-held assertion from a copied or intercepted credential.
Breaches seen in the wild
- CoPhish OAuth phishing via Copilot Studio: Datadog showed Copilot Studio agents on a Microsoft domain can front OAuth consent phishing and forward stolen tokens; no victims reported.
Read and download The State of NHI & AI Agent Breach Report 2026, covering 200+ breaches impacting Non-Human Identities including AI Agents.
NHI Mgmt Group analysis
Selective disclosure is now an IAM control, not just a privacy feature: Decentralized identity turns attribute minimisation into a governance decision because the relying party sees only what the wallet presents. That matters in European finance, where repeated collection of the same data creates both user friction and avoidable exposure. The practitioner implication is that attribute policy, consent, and assurance must be designed together, not handled as separate teams.
Wallet-based trust shifts the fraud boundary from the browser to the device: The article’s real security value is not the wallet brand but the move to out-of-band verification anchored to a holder and device. That reduces the usefulness of stolen credentials and makes replay much harder, especially where biometric step-up is enforced inside the wallet. Practitioners should treat device-bound confirmation as a transaction control, not an optional user experience layer.
IAM remains the enforcement layer for decentralised identity: Open protocols only help if the enterprise can map wallet assertions to policy, audit, and application authorisation. This is where many decentralised identity programmes fail, because portability does not replace federation, consent logging, or access decisions. The field should therefore treat wallet integration as an IAM architecture exercise, not a front-end credential swap.
eIDAS 2.0 makes identity governance cross-border by default: The regulation pushes banks, insurers, and fintechs toward common assurance expectations even though their legacy systems differ. That widens the governance surface from local onboarding to multinational trust orchestration. The implication for practitioners is that identity programme design now has to account for jurisdictional consistency as part of the core operating model.
Cryptographic proof does not remove governance debt; it changes where it sits: Decentralized identity removes some central honeypot risk, but it increases reliance on wallet integrity, issuer trust, revocation handling, and interoperability. That is a better security shape only if the organisation can govern those dependencies across the lifecycle. Practitioners should look at the control plane, not the credential format, as the real source of risk.
From our research library:
- 88% of organisations have embedded AI agents in their workflows, according to KPMG's 2026 report.
- Read next: Agentic AI Identity Guide
What this signals
Selective disclosure becomes a governance primitive: European finance is moving toward identity flows where users present only the minimum verified attribute needed for each transaction. That reduces oversharing, but it also means IAM teams must decide how much trust to place in portable claims and how to preserve auditability across the verifier chain.
Wallet-based authentication changes the attack economics: By shifting confirmation into an out-of-band wallet flow, institutions force attackers away from reusable central credentials and toward harder device-level compromise. The practical effect is that fraud controls, authentication policy, and application authorisation need to be designed as one system, not separate layers.
For practitioners
- Define wallet acceptance boundaries Specify which journeys can accept verifiable credentials, which still require legacy proofing, and what assurance level each use case needs.
- Bind consent to authorisation policy Record selective disclosure and transaction consent as part of the authorization decision so the application can prove what was shared and why.
- Map out-of-band verification to high-risk flows Prioritise onboarding, payment approval, and account recovery journeys where wallet confirmation can reduce replay and autofill abuse.
- Preserve auditability across distributed trust Keep a durable record of issuer, holder, verifier, credential type, and revocation status so cross-border checks remain explainable.
Key takeaways
- Decentralized identity in European finance is less about replacing IAM than about moving trust decisions into wallet-mediated verification and consent.
- The model can reduce repeated data entry and overcollection, but only if issuers, wallets, and relying parties maintain strong assurance and revocation discipline.
- For practitioners, the real work is integrating portable credentials into existing authentication, authorisation, and audit processes without losing governance visibility.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-63, NIST CSF 2.0 and NIST Zero Trust (SP 800-207) set the technical controls, while GDPR defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | SP 800-63C — Federation | Wallet presentation and verifier trust align with federated identity assurance in finance. |
| Recommendation — Use federation controls to define how wallet assertions are accepted and validated across relying parties. | ||
| NIST CSF 2.0 | PR.AA-05 — Access Permissions, Entitlements and Authorizations | Wallet-based claims still need authorization mapping inside enterprise applications. |
| Recommendation — Map portable credentials to authorization rules so selective disclosure does not weaken access decisions. | ||
| GDPR | Art.5 — Principles Relating to Processing of Personal Data | Selective disclosure and reduced data collection directly affect personal data minimisation and purpose limitation. |
| Recommendation — Align wallet data handling to minimisation and purpose-limitation requirements before deployment. | ||
| NIST Zero Trust (SP 800-207) | Identity and Access Management — Identity and Access Management | The model shifts trust decisions into continuous verification and context-aware access control. |
| Recommendation — Design wallet acceptance as part of a Zero Trust access path with continuous verification. | ||
Key terms
- Decentralized Identity: A model where users control portable credentials and present them to applications for verification. Instead of one organisation holding all identity data, trust is distributed across issuers, wallets, and relying parties, which changes how access decisions, recovery, and account linking must be governed.
- Verifiable Digital Credential: A verifiable digital credential is structured identity data that can be checked cryptographically by a relying party. Instead of relying on visual inspection, the verifier validates issuer signatures and presentation rules, which gives the control a clearer trust basis than an image-based document.
- Decentralised Identifier (DID): A W3C standard for self-sovereign, cryptographically verifiable identities that do not rely on a centralised registry. Emerging as a mechanism for providing AI agents with persistent, verifiable identities across multi-cloud and multi-agent environments.
- Selective Disclosure: Selective disclosure is the practice of sharing only the identity attributes needed for a specific decision. In credential-based systems, it reduces oversharing, lowers retention burden, and limits exposure when a verifier does not need the full record to make a trustworthy judgment.
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Published by the NHIMG editorial team on June 23, 2026.
Updated on October 11, 2026.
NHI Mgmt Group, the independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org