iOS app security services protect the data your app handles and the trust your business depends on. We provide threat modeling, secure Keychain and data-at-rest design, transport security, penetration testing and compliance readiness for HIPAA, SOC 2 and GDPR. Every engagement produces practical fixes and audit evidence your security team, customers and auditors can actually use. Whether you are preparing for an enterprise security review or remediating findings, request an iOS security assessment and get a prioritized plan from engineers who build iOS apps daily.
Request a Security Assessment →iOS is a well-protected platform, but an app is only as secure as its own design. Devices get lost or stolen, networks are hostile, users install untrusted profiles, attackers reverse-engineer app binaries and backends trust clients too much. Threat modeling identifies which of these risks matter for your app, your data and your users, then focuses effort where it reduces real risk. We base our approach on the OWASP Mobile Application Security Verification Standard, adapted to your business context and compliance obligations.
If a device is lost, what can someone access? We assess local data storage, session persistence and screen content to ensure sensitive information stays protected even when the device is in the wrong hands.
Public Wi-Fi, malicious proxies and compromised networks can intercept or manipulate traffic. We review how the app validates servers, protects credentials in transit and responds safely when connections look suspicious.
Attackers can inspect app binaries for hardcoded secrets, hidden endpoints and business logic. We identify what an attacker could learn from your app and ensure nothing in the binary grants meaningful access.
Many serious mobile vulnerabilities live on the server, not the device itself. We check that authorization, validation and rate limiting are enforced by the backend rather than trusted to the app.
Sensitive data stored on an iPhone needs deliberate protection. iOS provides strong building blocks, including the Keychain for secrets and file-level Data Protection classes tied to the device passcode, but apps must use them correctly. Common mistakes include tokens in UserDefaults, sensitive files left at weaker protection levels, unencrypted caches and data leaking into backups or screenshots. We design storage so every piece of sensitive data has an explicit, documented protection level that matches its risk.
Tokens, keys and credentials belong in the Keychain with appropriate accessibility settings, such as access only when the device is unlocked and never migrating to other devices through backups or restores.
Files containing sensitive data use complete protection where possible, making them inaccessible while the device is locked. We document the protection class for each data type and justify any exceptions.
Network caches, debug logs, keyboard caches and app switcher snapshots can expose sensitive data. We disable or protect these channels, so information does not leak outside the protected storage you designed.
For high-value operations, keys can be generated and kept in the Secure Enclave and gated behind Face ID or Touch ID, ensuring private keys never leave the device's dedicated secure hardware.
Every byte your app sends should travel over properly configured TLS. App Transport Security enforces strong defaults on iOS and iPadOS, but exceptions added during development often survive into production. For high-risk apps, certificate or public key pinning adds protection against interception by compromised or fraudulent certificate authorities. Pinning must be implemented carefully, though, because a poorly managed pin can lock every user out of your service when certificates rotate unexpectedly or a provider changes its chain.
We audit the ATS configuration and remove any insecure exceptions, ensuring all connections use modern TLS versions and strong cipher suites rather than weak legacy settings left behind by previous developers.
Where justified by risk, we pin public keys rather than individual certificates, include backup pins and plan rotation in advance, protecting users without risking a complete service outage during renewal.
Sensitive requests can be protected with signatures, replay prevention and device attestation through Apple's App Attest, helping your backend confirm that requests genuinely come from your legitimate, untampered app on a real device.
Analytics, advertising and support SDKs often send data you never intended to share. We monitor actual network traffic to confirm exactly what each SDK transmits, how often and where it goes.
iOS app penetration testing simulates how a real attacker would approach your app, its network traffic and its backend APIs. A meaningful test goes beyond automated scanning: testers analyze the binary, manipulate traffic, test authentication and authorization logic, and attempt to access data they should not see. We scope tests around your threat model and compliance needs, report findings with clear severity ratings and reproduction steps, and retest after fixes so you have documented proof of remediation.
We carefully examine the compiled app for hardcoded secrets, insecure configurations, weak cryptography, unprotected local data and exposed debug features, mapping findings to OWASP MASVS controls for clear, standards-based reporting.
Testers run the app on instrumented devices, intercept and modify traffic, and inspect stored data during use, finding issues that only appear while the app is actually running with real accounts.
Authorization flaws, excessive data exposure, injection and rate-limit weaknesses in your APIs are tested from the mobile client's perspective, where many of the most damaging mobile vulnerabilities are typically found.
Reports include clear severity ratings, business impact, evidence and specific remediation guidance for developers. After fixes, we retest every finding and issue an updated report suitable for customers and auditors.
Compliance frameworks rarely mention iOS by name, but they still apply to your app. HIPAA governs protected health information, SOC 2 covers how a service organization protects customer data, and GDPR sets privacy rights for people in the EU. None of them certifies an app on its own; they assess your organization's controls, and the app must support them. We translate framework requirements into concrete iOS engineering controls, especially for healthcare iOS apps and other regulated products.
For apps handling protected health information, we implement encryption, access controls, audit logging, automatic session timeouts and secure messaging, and confirm that all vendors receiving PHI sign business associate agreements.
SOC 2 auditors look for evidence that controls operate consistently. We align secure development practices, change management, access reviews and logging in the app and backend with your SOC 2 control set.
We support consent management, tracking permissions, data minimization, export and deletion requests, and accurate privacy disclosures, ensuring the app's real behavior matches your published privacy policy and App Store privacy labels.
Banking and payment apps face additional expectations around fraud prevention and strong authentication. Our work for fintech iOS apps applies these controls alongside careful PCI DSS scoping and tokenization decisions.
Security work only helps you sell and pass audits if it is documented. Enterprise customers send security questionnaires, auditors request evidence and procurement teams want proof before signing. We produce documentation that answers those requests directly, from architecture diagrams to test reports and control mappings. This evidence shortens sales cycles for B2B products serving enterprise customers and reduces the scramble that usually happens when an auditor or major prospect asks difficult questions.
Diagrams and written threat models show data flows, trust boundaries and controls. They give auditors and customer security teams a quick, clear understanding of how the app protects sensitive data.
Formal written reports with executive summaries, detailed findings and retest results provide independent evidence of testing. Enterprise customers frequently request these documents during vendor security reviews, renewals and contract negotiations.
We map implemented iOS and backend controls to OWASP MASVS, HIPAA safeguards and SOC 2 criteria, making it far easier to answer security questionnaires and demonstrate coverage during formal audits. Our enterprise iOS app security checklist shows the items we verify.
Code review records, dependency scanning results and release approvals show that security is a routine part of everyday engineering work. See how these steps fit into our iOS delivery process.
Securing an iOS app starts with a threat model, then applies controls across storage, network, authentication and backend. Key steps include storing secrets in the Keychain, using Data Protection classes, enforcing TLS, validating authorization on the server, minimizing third-party SDK data sharing and testing regularly with penetration tests aligned to OWASP MASVS.
iOS penetration testing typically includes static analysis of the app binary, dynamic testing on instrumented devices, traffic interception, local data storage review and testing of backend APIs for authorization and data exposure flaws. A good engagement ends with a severity-rated report, remediation guidance and a retest to confirm that fixes work.
An app alone cannot be certified HIPAA compliant, because HIPAA applies to organizations and their processes. However, an iOS app can be designed to support compliance through encryption, access controls, audit logging, secure messaging, session timeouts and using only vendors that sign business associate agreements when they handle protected health information.
SOC 2 applies to service organizations rather than individual apps, but the mobile app and its backend are part of the system auditors evaluate. Secure development, access controls, change management, logging and incident response for the app all contribute evidence toward your organization's SOC 2 report.
Most organizations test at least annually and after major releases, architecture changes or new integrations. Regulated and high-risk apps often test more frequently. Continuous measures, such as dependency scanning and secure code review in every release, reduce risk between formal penetration tests and keep audit evidence current.