Data security for consumer applications | Cossack Labs

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Security for consumer apps

Consumer software can take any form: from most-downloadable social network apps to niche developer tools. B2C companies operate in a tight space: they need to understand customers' goals and needs; they are responsible for sensitive data; they need to respect GDPR, CCPA, COPPA, and prevent data leaks.

Consumer app security is a mix of protecting users data against prying eyes, and at the same time protecting the product against users actions.

Typical challenges for
consumer apps’ security


Lots of data


Minimum lovable product


Massive adoption invites malware


Security hinders growth

Modern solutions

E2EE and Zero knowledge architectures

Strong product security

Security tooling

Our offerings

// Relevant products


Offers a transparent application level encryption which is easy-to-integrate to already existing infrastructures. Use AcraServer to encrypt database fields “on the fly”, use Acra’s Requests Firewall and Anomalies Detection to protect against suspicious queries.


A cross-platform cryptographic library for mobile, web, and server platforms, which solves 90% of typical data protection use cases that are common for most apps. Themis helps to integrate application level encryption fast and easy.

// Custom design and implementation

“Your data is always yours”

We design, implement and verify selective and end-to-end encryption layers for consumer apps. A key to long-time user retention is data recovery: users can lose their passwords or devices. Still, they should have a way to decrypt their data after successful authentication.

Specialized security controls

Verifiable audit logs, anonymous trackable IDs, data pseudonymisation, data firewalls, intrusion detection systems – our software has a modular structure, and we ship single modules too.

Multi-platform security

We build in security measures that work on every platform: hardware, mobile, web, server-side. They are scalable and easy to maintain, and support high load. We improve security without hurting app releases or breaking UX.

// Consulting


We assist your team in setting up and improving the SSDLC process for app development. We help prioritise security features, find appropriate automation tools, and always sync with the latest security guidelines and regulations.

Auditing and reviewing

We perform security audits and design reviews of existing implementations, how your apps protect sensitive data in storage and in transit, perform authentication, protect API, attest devices, and so on.

Security engineering

Encryption never comes alone. We will advise you on data migration, key management, designing application level encryption flow, implementing certain security features, assessing your product, verifying its security properties, and providing actionable advisory on improvements.

Have a question? Get a human to answer it!

How we make a difference

Experience in massive scale systems

Security customised for your use case

Product / UX security expertise

Combining compliance and practical security

Our mission is simple.

We help you focus on serving your customers better, while relieving your team from security engineering pains and making your users confident that their data is safe with you.

Contact us

There are many ways we can help: with our products, bespoke solutions, and engineering services. Leave your contact information to connect with our team:

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