2025

Trail of Bits’ Buttercup competes in DARPA’s AIxCC Finals with expanded resources, multiple rounds, new challenge types, and custom AI model capabilities.

We’re working on integrating an ASN.1 API into PyCA Cryptography,
built on top of the same Rust ASN.1 implementation already used by
Cryptography’s X.509 APIs.

This post describes a sophisticated social engineering campaign using Zoom’s remote control feature and provides technical solutions to protect organizations against this attack vector.

Learn snapshot fuzzing for kernel-level testing. New Testing Handbook section shows how to test drivers, antivirus software, and complex kernel components.

Trail of Bits’ independent study finds OpenSearch v2.17.1 is 1.6x faster than Elasticsearch v8.15.4 on Big5 workload and 11% faster on vector search.

Learn how to integrate TRAIL threat modeling into your SDLC, adapt and maintain models as your system evolves, and use them to identify security control gaps.

Discover TRAIL, Trail of Bits’ systematic threat modeling approach that identifies design-level security weaknesses and provides actionable remediation guidance.

Learn how comprehensive threat modeling could have identified the operational security gaps that led to Bybit’s $1.5B hack and prevented similar breaches.

We developed a simple CodeQL query to find denial-of-service (DoS) vulnerabilities in several high-profile Java projects.

The $1.5B Bybit Hack demonstrates how the Era of Operational Security Failures has arrived, and most cryptocurrency companies are not prepared for its implications.

Introducing Medusa v1, a cutting-edge fuzzing framework designed to enhance smart contract security.

TVM Ventures has selected Trail of Bits as its preferred security partner to strengthen the TON developer ecosystem. Through this partnership, we’ll lead the development of DeFi protocol standards and provide comprehensive security services to contest-winning projects deploying on TON. TVM Ventures will host ongoing developer contests where teams can showcase innovative applications that advance […]

Writing smart contracts requires a higher level of security assurance than most other fields of software engineering. The industry has evolved from simple ERC20 tokens to complex, multi-component DeFi systems that leverage domain-specific algorithms and handle significant monetary value. This evolution has unlocked immense potential but has also introduced an escalating number […]

This blog post highlights key points from our new white paper Preventing Account Takeovers on Centralized Cryptocurrency Exchanges, which documents ATO-related attack vectors and defenses tailored to CEXes. Imagine trying to log in to your centralized cryptocurrency exchange (CEX) account and your password and username just… don’t work. You […]

PyPI now supports marking projects as archived. Project owners can now archive their project to let users know that the project is not expected to receive any more updates. Project archival is a single piece in a larger supply-chain security puzzle: by exposing archival statuses, PyPI enables downstream consumers to make more […]

Key derivation is essential in many cryptographic applications, including key exchange, key management, secure communications, and building robust cryptographic primitives. But it’s also easy to get wrong: although standard tools exist for different key derivation needs, our audits often uncover improper uses of these tools that could compromise key security. Flickr’s API […]

While Trail of Bits is known for developing security tools like Slither, Medusa, and Fickling, our engineering efforts extend far beyond our own projects. Throughout 2024, our team has been deeply engaged with the broader security ecosystem, tackling challenges in open-source tools and infrastructure that security engineers rely on every day. This year, our engineers […]