{"id":3887,"date":"2023-03-29T10:09:05","date_gmt":"2023-03-29T10:09:05","guid":{"rendered":"https:\/\/secure-contacts.com\/infocenter\/technologie-und-sicherheit\/"},"modified":"2025-09-15T18:27:02","modified_gmt":"2025-09-15T18:27:02","slug":"technologie-und-sicherheit","status":"publish","type":"page","link":"https:\/\/secure-contacts.com\/en\/infocenter\/technologie-und-sicherheit\/","title":{"rendered":"Technology and security"},"content":{"rendered":"\n
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Technology and data security<\/h1>\n
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Managing your business contacts in compliance with data protection regulations<\/div>\n <\/div>\n
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The Secure Contacts app enables the management of business contacts on a smartphone in compliance with data protection regulations<\/strong>. Full integration with Microsoft Intune protects personal data and prevents synchronization with third-party apps<\/strong> such as WhatsApp, Google, etc. Users don’t have to store and maintain a single business contact on their own device.<\/p>\n<\/div>\n \n <\/div>\n

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All business data from the company address book, the personal Outlook address book<\/strong>, and customer data from any CRM systems<\/strong> or other sources<\/strong> are available in the app and managed centrally. It acts as a protected and encrypted container<\/strong> that prevents unintentional data loss to third-parties.<\/p>\n<\/div>\n <\/div>\n \n <\/div>\n <\/div>\n<\/section>\n\n\n\n\n

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All the features at a glance<\/h2>\n <\/div>\n
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Safety & privacy<\/b><\/div><\/div>\n
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GDPR-compliant<\/p>\n Prevent uncontrolled loss of contact data by apps with access to the device’s phonebook (e.g., WhatsApp). <\/div>\n <\/div>\n

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Encryption<\/p>\n 256-bit AES encryption of data
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Central MDM integration<\/p>\n (e.g. Microsoft Intune) with granular policies and differentiated user group management. <\/div>\n <\/div>\n

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Control over the data<\/p>\n No storage of data in iCloud or local backups and deletion in case of:
\r\n\u2022 Loss of the device
\r\n\u2022 Leaving the company
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Protection against data leakage and loss<\/p>\n In case of device loss or job change. <\/div>\n <\/div>\n

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Extended security features<\/p>\n Such as anonymous calls, vacation mode, and out-of-office status display. <\/div>\n <\/div>\n \n <\/div>\n

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\"\" Usability & management<\/b><\/div>\n
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All contacts in one app<\/p>\n Company address book, Outlook, GAL, CRM systems (Dynamics 365, Salesforce, HubSpot), Azure Dataverse & more. <\/div>\n <\/div>\n

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Intelligent caller identification (Caller ID)<\/p>\n And automated data maintenance with duplicate consolidation. <\/div>\n <\/div>\n

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Outlook integration<\/p>\n Create, edit, and delete contacts directly in the app. <\/div>\n <\/div>\n

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QR & vCard support<\/p>\n For quickly adding new contacts including multiple vCard management. <\/div>\n <\/div>\n

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Telephony & messenger integration<\/p>\n Telephony & messenger integration. <\/div>\n <\/div>\n

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Microsoft Teams functions<\/p>\n Status display, calls, and chats directly from the app. <\/div>\n <\/div>\n

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User-friendliness & customization<\/p>\n Modern UI with tab navigation, notes function, Siri & CarPlay support, and corporate identity customization. <\/div>\n <\/div>\n \n <\/div>\n <\/div>\n <\/div>\n \n <\/section>\n\n\n\n\n

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Architecture<\/h2>\n \n
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Security concept<\/h2>\n \n

The app\u2019s security concept is based on two components: On the one hand, data is encrypted within the app, and on the other, a security configuration is applied to the app via the Microsoft UEM System Endpoint Manager (Intune) and the Microsoft Authentication Library (MSAL) in combination with the Intune SDK.<\/p>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n\n\n

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Data sources<\/h4>\n

The Secure Contacts App is a cloud-native application, meaning it receives all contact information from your Azure tenant. Primary data sources are Azure Active Directory (AAD) and the Global Address List (GAL). In addition, the app receives contact information from the user\u2019s personal Outlook contacts (APC, Exchange Online only). As of Version 3, these Outlook contacts can be created, edited, and deleted directly in the app. Contacts can also be added via QR codes or vCards, including support for multiple vCards. Optional data sources include Dynamics 365 (D365), MS Dataverse (DVRS), and Azure Blob Storage (ABS), which require additional configuration in the customer\u2019s Azure tenant.<\/p>\n

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App data in transit<\/h4>\n

The app communicates only with the MS Azure Cloud, which means primarily with the Graph API and Azure Authentication Endpoint, and optionally with Azure Blob Storage and Azure Dataverse. All API calls or transactions are made via HTTPS with Transport Layer Security (TLS). After the SSL handshake, the Secure Contacts app and Azure API endpoints use the strongest encryption algorithm available on both sides. The app does not collect telemetry data in the process, nor does it connect to any endpoints other than the MS Azure Cloud.<\/p>\n

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App data at rest<\/h4>\n

The Secure Contacts app stores all data in a SQLite database with AES-256 encryption. The cryptography key is randomly generated using Microsoft’s RNGCryptoServiceProvider when the app is first launched. It is then securely stored in the device’s local iOS key chain. The app container itself is secured by MS Intune app protection. As a result, neither another app nor the operating system itself can view or modify the stored data.<\/p>\n<\/div>\n \n <\/div>\n

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Microsoft Intune<\/h4>\n

In addition to security features, the Secure Contacts App also integrates the Microsoft Intune SDK. This enables control of functions through Microsoft App Protection Policies.<\/p>\n

These include, among others, the following functions:<\/p>\n