Application Security

mobile device with a cybersecurity shield

We have been a recognized leader in software security for 10 years, with a long track record of helping our clients improve their security. We go beyond just finding bugs; we help secure the industry’s most critical applications by focusing on deeply technical and detail-oriented assessments and by providing guidance to help you eliminate software vulnerabilities so you never see the same bug twice. We publish research based on our work and have worked with the industry’s leading organizations, such as Linux Foundation, Rook, and OPA, on technical and detail-oriented security assessments.

Through collaboration with open-source project teams via the Open Source Technology Improvement Fund (OSTIF) and the Open Technology Fund (OTF), we conduct threat modeling assessments and secure code reviews. Because of this partnership, we have made significant contributions to improve the security posture of the open-source community by reviewing projects, including the kernel release signing process in Linux, the cURL project, and PyPI.

Book a technical office hours session

Book a complimentary one-hour meeting with one of our engineers to dive into a challenging technical issue, explore tooling options, and gain valuable insights directly from our experts. This session is purely technical—no sales talk, just a focused discussion that showcases our depth, talent, and capabilities.

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Application Security Services:

Design Assessment

Our Design Assessment offers a focused one- to two-week security analysis of your system during the early design phase. We evaluate your security architecture to identify potential vulnerabilities and foundational weaknesses, helping you build a robust and resilient system from the ground up.

Proactive Vulnerability Prevention

Strategic Architectural Alignment

Early Risk Identification

Comprehensive Design Evaluation

A design review provides immediate feedback, minimizing project risks, saving development time and costs by reducing the need for late-stage refactoring.

Explore our Design Assessments: Public Report for cURL

Threat Modeling

Our data-centric threat models provide a comprehensive risk assessment that identifies specific system risks and potential threat actors, both internal and external. We use a proven methodology to help you develop more secure applications and systems.

Security Control Maturity Assessment

Comprehensive Threat Landscape Mapping

Trust Zone Analysis

Threat Actor Profiling

Threat modeling helps you proactively identify risks, understand potential attack vectors, and develop targeted mitigation strategies.

Explore Our Threat Models: Public Report for the Linkerd Project

Cloud/Infrastructure Assessment

We evaluate the infrastructure used to deploy and operate cloud-hosted applications and environments. Our assessment identifies key threats and develops a comprehensive understanding of your cloud-native environment's security posture.

Advanced Automated Analysis

Container and Orchestration Security

Infrastructure Configuration Review

Cloud Deployment Risk Assessment

Our Cloud Assessment provides comprehensive security insights, helping you identify and mitigate infrastructure vulnerabilities before they become critical issues.

Explore Our Cloud/Infrastructure Assessments: Public Report for the Tekton Project

Comprehensive Code Assessment

Our Comprehensive Code Assessment adopts a hybrid approach, combining manual review, static analysis, and dynamic testing to evaluate high-risk components across your entire project, including core code, infrastructure, front end, back end, APIs, and SDKs.

Strategic Security Improvement

Advanced Testing Methodologies

Multi-Language Vulnerability Analysis

Comprehensive Code Quality Evaluation

Our Comprehensive Code Assessment provides a holistic review of your system, delivering insights into potential vulnerabilities and architectural risks with actionable guidance for improving your project's security and integrity.

Explore Our Comprehensive Code Assessments: Public Report for cURL

Handbook

Handbooks

Our Testing Handbook is a resource that guides developers and security professionals in configuring, optimizing, and automating many of the static and dynamic analysis tools we use at Trail of Bits. Get started using the handbook.

Report

Public Reports

We have extensive experience performing security assessments on cloud-native and technology products such as Zoom, PyPi, cURL and KEDA. View all of our public application security assessments.

Blog

Blogs

We are committed to sharing our knowledge with the community. We share our research and expertise whenever possible through our blog. Read our favorite application security blog post, cURL: How a joke led to significant findings.

Why work with Trail of Bits

Unlike many firms that follow a predefined checklist that limits the scope and capabilities, our assessments don't look to check boxes but discover the root causes of security weaknesses identified. This approach allows us to provide nuanced, actionable insights that do more than fix the immediate problems—they also enhance the system's overall resilience and security for the future. By focusing on the root causes and broader implications of security vulnerabilities, we empower our clients to not just respond to bugs but to develop stronger, more resilient software design, development, and coding practices.

Read our assessment of Argo
Our expertise

We believe in the power of collaboration and the synthesis of knowledge across various fields to deliver unparalleled services to our clients. Our diverse company lines are not isolated silos of expertise. Instead, they represent a spectrum of capabilities that we seamlessly blend to meet the unique needs of each project.

AI/ML
Application Security
Blockchain
Cryptography
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