Deep-stack consulting
for hardened Linux
硬核 Linux 系统
深层技术咨询
With over ten years of hands-on experience in operating systems, compilers, security, and server infrastructure, we specialize in providing end-to-end solutions that cover everything from low-level system engineering to application-level optimization, ensuring uncompromising correctness and stability.
我们提供从底层系统工程到应用层优化的全方位解决方案。 我们专注于操作系统、编译器、安全和服务器基础设施等核心领域，帮助工程团队解决那些对正确性和长期稳定性有较高要求的复杂技术问题。
What we actually work on
我们实际解决的问题
Operating System Engineering操作系统工程
Kernel work, driver development, real-time scheduling, and performance tuning on Linux systems.
内核开发、驱动开发、实时调度，以及 Linux 系统的性能调优。
Compiler & Toolchain编译器与工具链
Custom language runtimes, LLVM/GCC backend work, Scheme/Guile VM internals, and cross-compilation environments for embedded targets.
自定义语言运行时、LLVM/GCC 后端开发、Scheme/Guile VM 内核，以及嵌入式目标的交叉编译环境。
Security Hardening安全加固
Reducing attack surface, hardening systems against real-world exploits, and reviewing security-critical designs.
收敛攻击面，针对真实世界的利用方式进行系统加固，并审查安全关键设计。
Storage存储咨询
Designing and improving Linux-based storage systems, from deployment to reliability and backup.
设计与优化基于 Linux 的存储系统，涵盖部署、可靠性与备份。
Privacy隐私咨询
Privacy review and architecture design for web-based systems, with a focus on real-world data handling risks.
面向 Web 系统的隐私审查与架构设计，重点关注真实的数据处理风险。
Server & Backend服务器与后端开发
High-concurrency web services, systems programming in C/Modern C++/Scheme, database integration, and infrastructure-as-code for demanding workloads.
高并发 Web 服务、C/Modern C++/Scheme 系统编程、数据库集成，以及面向高负载场景的基础设施即代码。
Embedded & IoT嵌入式与物联网
Firmware engineering, secure boot chains, minimal-footprint Linux distributions, and hardware-software co-design consultation.
固件工程、安全启动链、最小化 Linux 发行版，以及硬件/软件协同设计咨询。
Code Audit & Review代码审计与评审
Deep-dive source code reviews for critical systems, vulnerability analysis, and remediation guidance with thorough documentation.
关键系统源码深度审计、漏洞分析，以及附完整文档的修复指导。
Industries we serve
我们服务的行业领域
Internet & Cloud互联网与云计算
Building and optimizing scalable backend systems and high-throughput services.
构建与优化、可扩展的后端系统、高吞吐服务。
Internet of Things物联网
Secure-by-design embedded Linux, RTOS integration, over-the-air update pipelines, and device fleet management.
安全优先的嵌入式 Linux、RTOS 集成、OTA 更新管道与设备集群管理。
Automotive Security汽车安全
ISO/SAE 21434-aligned threat modeling, ECU hardening, and secure communication stacks for connected vehicles.
符合 ISO/SAE 21434 的威胁建模、ECU 加固，以及联网车辆的安全通信协议栈。
Security Lab ↗ 安全实验室 ↗Critical Infrastructure关键基础设施
ICS/SCADA security, air-gapped system design, and formal verification of safety-critical control paths.
ICS/SCADA 安全、气隙系统设计，以及安全关键控制路径的形式化验证。
Security Lab ↗ 安全实验室 ↗Cyber Security & Privacy 信息安全和隐私
Trusted computing environments, hardware root-of-trust, and supply chain integrity verification. Data security and privacy consulting and web applications/services.
可信计算环境、硬件信任根，以及敏感部署场景的供应链完整性验证。 Linux 环境下的数据保护，Web 应用/服务的隐私咨询。
Our open-source contributions
我们的开源贡献
HardenedLinux is an umbrella project and community dedicated to building highly secure and robust Linux systems. It provides a hardened Ubuntu-based distribution with comprehensive security enhancements.
HardenedLinux 是一个致力于构建高安全、健壮性于一体的 Linux 系统开源项目与社区。它提供基于 Ubuntu 的加固 Linux 发行版，包含全面的安全强化特性。
A full-featured web framework for GNU Guile Scheme — handling routing, ORM, sessions, cache, and WebSocket. Built for production server workloads with a Lisp-native sensibility.
GNU Guile Scheme 全功能 Web 框架，高并发协程服务器核心、涵盖路由、ORM、会话、缓存与 WebSocket，借助 Lisp 高表达性提供无缝弹性集成，服务于生产级服务器负载。
A highly optimized functional programming VM for embedded systems based on ZephyrRTOS, Runs Scheme in as little as 10KB of RAM.
为嵌入式系统打造的高度优化函数式编程虚拟机，基于 ZephyrRTOS。最低仅需 10KB 内存即可运行 Scheme。
A CloudNative management framework for next-generation containerized data centers. Automates massive OpenBMC node fleets via Redfish API and SCL (Server Configuration Language). Includes firmware security hardening.
面向下一代容器化数据中心的云原生管理框架，通过 Redfish API 与 SCL 自动化管理大规模 OpenBMC 节点集群，并提供固件安全加固。
Years of hacking on systems that matter
多年深耕，构建真正重要的系统
Our open-source work spans the full software stack — from Scheme language runtimes and compiler internals to Linux kernel contributions and cryptographic primitives. We build and maintain code that actually runs in production.
我们的开源工作横跨完整软件栈——从 Scheme 语言运行时与编译器内核，到 Linux 内核贡献与密码学原语。我们构建并长期维护在生产环境中实际使用的系统代码。
Many of our upstream contributions live under the HardenedLinux organization, covering kernel hardening patches, toolchain security improvements, and documented attack-mitigation techniques.
大量上游贡献托管在 HardenedLinux 组织下，涵盖内核加固补丁、工具链安全改进，以及有据可查的攻击缓解技术。
We believe the best consulting comes from teams who ship real software. Our open-source record is our portfolio.
我们相信，最好的咨询来自真正交付软件的团队。开源贡献，是我们最真实的履历。
↗ HardenedLinux on GitHubSoftware Expertise
Help your business
专精软件
触类旁通
HardenedVault is a small team focused on systems-level engineering—operating systems, compilers, and security. We contribute to GNU projects, harden production Linux systems, and help teams build infrastructure they can rely on.
HardenedVault 是一支专注于操作系统、编译器与安全领域的系统工程师团队。我们长期为 GNU 项目贡献代码，致力于生产级 Linux 系统的安全加固，并帮助工程团队构建高度可靠的安全基础设施。
Operating Systems操作系统
Linux kernel internals, driver development, real-time subsystems, and secure boot architecture.
Linux 内核原理、驱动开发、实时子系统与安全启动架构。
Compilers & Runtimes编译器与运行时
LLVM/GCC pipelines, Compiler/VM design, language toolchain security, and cross-compilation.
LLVM/GCC 流水线、编译器/虚拟机 设计、语言工具链安全与交叉编译。
Security Engineering安全工程
Exploit mitigation, cryptographic engineering, formal threat modeling, and vulnerability research.
漏洞利用缓解、密码工程、形式化威胁建模与漏洞研究。
Server Development服务器开发
High-performance backends in C, Modern C++, and Scheme, Python based AI train/infer pipeline, Systems programming from protocol to deployment.
C、现代C++ 与 Scheme 高性能后端、基于 Python 的AI训练/推理流水线、从协议到部署的全链路系统编程。
Ready to go deep?
准备好深入合作了吗？
If you're dealing with complex system issues or need deeper engineering support, let's talk.
如果你正在处理复杂系统问题，或需要更深入的工程支持，欢迎联系我们。