If you work on deep learning systems, check out our new tool, PrivacyRaven—it’s a Python library that equips engineers and researchers with a comprehensive testing suite for simulating privacy attacks on deep learning systems. Because deep learning enables software to perform tasks without explicit programming, it’s become ubiquitous in […]
OpenSSL is one of the most popular cryptographic libraries out there; even if you aren’t using C/C++, chances are your programming language’s biggest libraries use OpenSSL bindings as well. It’s also notoriously easy to mess up due to the design of its low-level API. Yet many of these mistakes fall into […]
The Trail of Bits Winternship is our winter internship program where we invite 10-15 students to join us over the winter break for a short project that has a meaningful impact on information security. They work remotely with a mentor to create or improve tools that solve a single impactful problem. These paid internships give […]
A few weeks ago I had the inspiring experience of attending the annual Grace Hopper Celebration (GHC), the world’s largest gathering of women in technology. Over four days in Orlando, Florida, GHC hosted a slew of workshops and presentations, plus a massive career fair with over […]
As a summer intern at Trail of Bits, I used the PlusCal and TLA+ formal specification languages to explore Ethereum’s CBC Casper consensus protocol and its Byzantine fault tolerance. This work was motivated by the Medium.com article Peer Review: CBC Casper by Muneeb Ali, Jude […]
During my internship this summer, I built a multi-party computation (MPC) tool that implements a 3-party computation protocol for perceptron and support vector machine (SVM) algorithms. MPC enables multiple parties to perform analyses on private datasets without sharing them with each other. I defveloped a technique that lets three parties obtain the results of machine […]
We are proud to announce the integration of ensemble fuzzing into DeepState, our unit-testing framework powered by fuzzing and symbolic execution. Ensemble fuzzing allows testers to execute multiple fuzzers with varying heuristics in a single campaign, while maintaining an architecture for synchronizing generated input seeds across […]
As a summer intern at Trail of Bits, I’ve been working on building Fennec, a tool to automatically replace function calls in compiled binaries that’s built on top of McSema, a binary lifter developed by Trail of Bits. The Problem Let’s say you have a compiled binary, but you […]
KLEE-Native, a fork of KLEE that operates on binary program snapshots by lifting machine code to LLVM bitcode.
We open-sourced a set of static analysis tools, KRFAnalysis, that analyze and triage output from our system call (syscall) fault injection tool KRF. Now you can easily figure out where and why, KRF crashes your programs. During my summer internship at Trail of Bits, I worked on KRF, […]
During my summer at Trail of Bits, I took full advantage of the latest C++ language features to build a new SQLite wrapper from scratch that is easy to use, lightweight, high performant, and concurrency friendly—all in under 750 lines of code.
Broadly, an end-to-end encrypted messaging protocol is one that ensures that only the participants in a conversation, and no intermediate servers, routers, or relay systems, can read and write messages. An end-to-end encrypted group messaging protocol is one that ensures this for all participants in a conversation of three or more people. End-to-end encrypted group […]
Each year, Trail of Bits runs a month-long winter internship aka “winternship” program. This year we were happy to host 4 winterns who contributed to 3 projects. This project comes from Carson Harmon, a new graduate from Purdue interested in compilers and systems engineering, and a new full-time member of our research practice. I set […]
For my winternship and springternship at Trail of Bits, I researched novel techniques for symbolic execution on cryptographic protocols. I analyzed various implementation-level bugs in cryptographic libraries, and built a prototype Manticore-based concolic unit testing tool, Sandshrew, that analyzed C cryptographic primitives under a symbolic and concrete environment. Sandshrew is a first step […]
Each year, Trail of Bits runs a month-long winter internship “winternship” program. This year we were happy to host 4 winterns who contributed to 3 projects. This is the first in a series of blog posts covering the 2019 Wintern class. Our first report is from Vaibhav Sharma (@vbsharma), a PhD student at the University […]
This spring and summer, as an intern at Trail of Bits, I researched modeling fault attacks on RSA signatures. I looked at an optimization of RSA signing that uses the Chinese Remainder Theorem (CRT) and induced calculation faults that reveal private keys. I analyzed fault attacks at a low level rather than in […]
Tim Alberdingk Thijm As part of my Springternship at Trail of Bits, I created a series of data-flow-based optimizations that eliminate most “dead” stores that emulate writes to machine code registers in McSema-lifted programs. For example, applying my dead-store-elimination (DSE) passes to Apache httpd eliminated 117,059 stores, or 50% of the store operations to Remill’s […]
If you’re studying in a degree program, and you thrive at the intersection of software development and cyber security, you should apply to our fall or winter internship programs. It’s a great way to add paid experience -and a publication- to your resume, and get a taste of what it’s like to work in a commercial […]
This summer I’ve had the incredible opportunity to work with Trail of Bits as a high school intern. In return, I am obligated to write a blog post about this internship. So without further ado, here it is. Starting with Fuzzing The summer kicked off with fuzzing, a technique I had heard of but had […]
