Mobile app security predictions for 2026 hinge on trust and attestation

At a glance

What this is: This is a 2026 outlook on mobile app security that argues trust, attestation, and layered defenses are becoming central as app risk, fraud, and API abuse rise.

Why it matters: It matters to IAM and security teams because mobile apps increasingly gate identity verification, customer access, and API trust, which makes app integrity part of broader access governance.

By the numbers:

• Developers are building an average of 13 apps per year, which widens the mobile attack surface quickly.
• Only 41% of organisations use app attestation, leaving a large enforcement gap at the API boundary.

👉 Read Guardsquare's mobile app security predictions for 2026

Context

Mobile app security is no longer just about protecting code on a device. As apps become gateways to banking, healthcare, shopping, and identity flows, the real governance problem is whether organisations can verify the app, the device, and the request before trusting the transaction.

That shift matters because mobile apps now sit inside identity verification, customer access, and fraud prevention programmes. When the app is compromised, the control failure can look like IAM weakness, NHI abuse, or API misuse depending on where the attacker enters the flow.

Key questions

Q: How should security teams use app attestation in mobile identity flows?

A: Security teams should use app attestation as a gate for high-risk mobile actions, not as an optional telemetry signal. If the app cannot prove it is genuine and untampered, the system should step up verification, restrict sensitive operations, or route the user into an assisted path. That keeps trust decisions server-side and makes bypass harder.

Q: Why do mobile apps create problems for IAM and fraud teams?

A: Mobile apps sit in the middle of authentication, identity proofing, and transaction approval, so compromise of the app can undermine every downstream decision. Fraud teams care about the device and request path, while IAM teams care about who is authenticated. When the client is untrusted, both disciplines lose assurance.

Q: What breaks when mobile security only looks at the device and not the apps?

A: Teams miss the behaviours that actually move data, tokens, and sensitive content off the device. A phone can appear healthy while an installed app uses excessive permissions, risky SDKs, or unsafe network paths to create exposure. That means compromise detection stays reactive, while the app layer continues to generate risk that never enters the device alert stream.

Q: Who should own mobile app integrity controls in an enterprise?

A: Mobile app integrity should be shared across mobile engineering, IAM, fraud, and security operations because the control affects access, verification, and abuse prevention. No single team owns the entire risk. The right model is a common policy for attestation signals, escalation paths, and exception handling.

Technical breakdown

Server-side app attestation as a trust boundary

Application attestation moves trust decisions off the device and onto the server. Instead of assuming a client is genuine because it can reach an API, the service verifies that the app is untampered, running in an expected environment, and presenting signals that match policy. This matters because rooted devices, repackaged apps, and bot clients can all look legitimate at the network layer. Attestation gives defenders a way to separate user intent from client integrity before sensitive actions are allowed.

Practical implication: make attestation a precondition for high-risk API calls, not a post-event detection control.

Why mobile security and UX now need shared logic

The traditional model treats security as a device-side gate and UX as a separate design problem. That breaks down when blocking a user outright can drive churn, push users to unsafe workarounds, or prevent legitimate access in edge cases such as rooted phones. The better model uses combinatorial risk signals and server-side decisioning so security outcomes can adapt to context. In practice, that means the same identity or fraud signal can support step-up verification, customer service review, or transaction restriction rather than a single hard deny.

Practical implication: route risky sessions into adaptive workflows instead of using one device check to decide every outcome.

How client-side protections and MAST fit together

Mobile application security testing finds weaknesses in code, while runtime application self-protection and code hardening try to keep protections in place after release. Those controls are complementary because attackers often strip protections, modify binaries, or instrument the app after installation. Security teams should think in layers: test before release, harden the client, and verify behaviour at runtime. That layered approach is especially important when the app mediates identity proofing or API access, because compromise at any layer can undermine the trust chain.

Practical implication: combine MAST, runtime protection, and server-side verification rather than relying on scanning alone.

NHI Mgmt Group analysis

App attestation is becoming the new trust boundary for mobile identity flows. Mobile apps increasingly mediate banking, healthcare, and verification journeys, which means the app itself now influences whether an identity transaction should be trusted. When only 41% of organisations use attestation, the gap is not just technical, it is governance-related. Practitioners should treat app integrity as part of access assurance, not as a niche mobile control.

Mobile fraud is moving from device compromise to workflow compromise. Attackers do not need to defeat every security layer if they can repack a client, modify verification logic, or coerce users into downloading a fake app. That changes the control objective from simple malware blocking to preserving the authenticity of the request path. The named concept here is app integrity trust gap: the space between a working app and a trustworthy app. Practitioners should close that gap before fraud teams inherit the failure.

The security and UX trade-off is now a governance issue, not a design preference. If security controls are so blunt that they block legitimate users, teams create pressure for exceptions, bypasses, and unmanaged friction workarounds. That is why adaptive, server-side decisioning matters. Mobile security programmes should be evaluated on their ability to preserve both trust and task completion, because a control that cannot be used consistently will not be governed consistently.

Mobile app security is converging with IAM, fraud, and API governance. The article’s most important signal is that mobile controls increasingly sit at the intersection of identity verification, customer authentication, and API trust. That means IAM, mobile security, and fraud teams need shared policy language for device integrity, step-up logic, and request assurance. Practitioners should expect mobile trust signals to become part of broader identity governance rather than a standalone appsec concern.

What this signals

App integrity trust gap: mobile programmes are moving toward policies that judge the authenticity of the client, the device, and the request together. That will push identity teams to define which app signals can influence authentication, risk scoring, and transaction approval without creating ungoverned exceptions.

For teams that already rely on mobile journeys for onboarding or customer access, the next governance step is to connect attestation, fraud telemetry, and IAM policy into a single decision model. The practical challenge is not collecting more signals, but ensuring the same signal means the same thing across security and identity workflows.

For practitioners

• Make app attestation mandatory for high-risk flows Require server-side attestation before payments, account recovery, identity verification, and sensitive API transactions. Treat attestation failure as a policy signal that can trigger step-up review rather than a simple app error. This is the control that helps distinguish genuine clients from repackaged or instrumented apps.
• Use adaptive decisioning instead of binary device blocks Replace blanket rooted-device or jailbreak denials with risk-based routing that can send users into assisted verification, additional checks, or limited-function access. This reduces churn while preserving control over high-risk actions and keeps security decisions aligned with business logic.
• Layer MAST, hardening, and runtime protection Test the app before release, harden the binary, and enforce runtime protections after installation so attackers cannot simply remove safeguards. That combination matters most for apps that carry authentication, onboarding, or verification responsibilities.
• Align mobile trust signals with IAM and fraud policy Define which app integrity signals should influence identity proofing, session risk, and transaction approval. Shared policy between IAM, fraud, and mobile teams prevents conflicting responses when the same user session looks legitimate in one system and risky in another.

Key takeaways

• Mobile app security is becoming a trust and governance problem because apps now sit inside identity, payment, and healthcare workflows.
• Guardsquare’s cited data shows a gap between high confidence and real exposure, with nine incidents per organisation and only 41% using attestation.
• Practitioners should shift to server-side attestation, adaptive decisioning, and layered runtime protection to keep trust usable and enforceable.

Key terms

• App Attestation: App attestation is a trust decision that checks whether a mobile app and its device environment meet policy before sensitive actions are allowed. It can use device integrity, app integrity, and telemetry to decide whether requests should be trusted, restricted, or denied.
• Runtime Application Self-Protection: RASP is a runtime control that detects and can block suspicious application behaviour as it happens. In NHI contexts, it can contain abuse from service accounts or tokens, but it does not replace identity ownership, entitlement review, rotation, or deprovisioning.
• Interactive Application Security Testing: IAST is a testing method that instruments an application from the inside while it runs in a controlled environment. It helps teams see how code behaves, which data flows are triggered, and where security weaknesses appear before deployment, but it does not govern identities after release.

What's in the full article

Guardsquare's full blog post covers the operational detail this post intentionally leaves for the source:

• Threat signal combinations used to make server-side decisions in mobile risk flows
• Implementation detail on app attestation and how it changes API enforcement
• Practical examples of code hardening, RASP, and MAST across the mobile lifecycle
• How mobile teams can balance user retention with stronger trust enforcement

👉 The full Guardsquare post covers the trust, UX, and attestation details behind the 2026 outlook.

Deepen your knowledge

The NHI Foundation Level course, the industry's only accredited NHI security programme, covers NHI governance, secrets management, and machine identity security. It helps practitioners connect identity controls to the broader access and trust decisions their programmes rely on.