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ByteDance SE Lab

Official account of ByteDance SE Lab, sharing research and practical experience in software engineering. Our lab unites researchers and engineers from various domains to accelerate the fusion of software engineering and AI, driving technological progress in every phase of software development.

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Latest from ByteDance SE Lab

36 recent articles

ByteDance SE Lab

Apr 15, 2026 · Information Security

Why Traditional IAM Fails for Agentic AI and How New Identity Frameworks Secure OpenClaw

The rapid rise of autonomous AI agents like OpenClaw exposes severe security gaps—over‑privileged access, unauthenticated public instances, and one‑click RCE—forcing a rethink of identity‑centric IAM designs that can protect agents through propagation, secretless auth, context awareness, and intent‑aware authorization.

AI securityIAMIdentity Management

0 likes · 15 min read

Why Traditional IAM Fails for Agentic AI and How New Identity Frameworks Secure OpenClaw

ByteDance SE Lab

Apr 7, 2026 · Artificial Intelligence

How Scale‑SWE Enables 100k Real‑World Coding Tasks for AI Agents

The Scale‑SWE project combines a massive 100k‑sample software engineering dataset with a high‑concurrency sandbox infrastructure and a multi‑agent workflow to dramatically improve code‑agent training, evaluation, and real‑world performance, surpassing existing models on SWE‑bench benchmarks.

AI scalingSWE datasetcode agents

0 likes · 11 min read

How Scale‑SWE Enables 100k Real‑World Coding Tasks for AI Agents

ByteDance SE Lab

Apr 3, 2026 · Fundamentals

Douyin’s Deep Dive: Expanding Android ART Heap, FD Limits & M:N Threading on Legacy Devices

This article details how Douyin engineers tackled Android’s limited heap, file‑descriptor, and thread constraints on older phones by expanding ART malloc and region spaces, enlarging FD/FD_SET limits, and implementing a transparent M:N user‑level threading model, achieving significant stability and performance gains.

ARTAndroidFD Limits

0 likes · 33 min read

Douyin’s Deep Dive: Expanding Android ART Heap, FD Limits & M:N Threading on Legacy Devices

ByteDance SE Lab

Apr 1, 2026 · Information Security

How Hidden Prompt Attacks Threaten OpenClaw Agents and the AgentArmor Defense

The article analyzes how malicious prompt injections can hijack OpenClaw agents' decision logic, outlines three core risk categories—intent deviation, workflow hijack, and data leakage—and presents AgentArmor's runtime protection framework that uses intent alignment, control‑flow integrity, and data‑flow confidentiality checks to mitigate these threats.

AI securityAgentArmorOpenClaw

0 likes · 19 min read

How Hidden Prompt Attacks Threaten OpenClaw Agents and the AgentArmor Defense

ByteDance SE Lab

Mar 20, 2026 · Artificial Intelligence

How to Build a Multi‑Repo Semantic Code Q&A System with OpenViking

This guide explains the challenges of multi‑repository code retrieval, presents an experimental evaluation of OpenViking's semantic search, and provides step‑by‑step instructions for installing, configuring, importing repositories, and integrating the system into AI agents and chatbots.

AI assistantMulti-repoOpenViking

0 likes · 16 min read

How to Build a Multi‑Repo Semantic Code Q&A System with OpenViking

ByteDance SE Lab

Mar 2, 2026 · Industry Insights

How Real-Time 3D Digital Clones Stole the Show at the 2026 Spring Festival Gala

The 2026 Spring Festival Gala showcased a breakthrough spatial video system that creates lifelike 3D digital twins in real time, using a 70‑camera 4D reconstruction pipeline, AI‑enhanced rendering, and seamless integration with broadcast and lighting controls to achieve photorealistic, multi‑person performances.

4D reconstructionDigital Twinai-optimization

0 likes · 6 min read

How Real-Time 3D Digital Clones Stole the Show at the 2026 Spring Festival Gala

ByteDance SE Lab

Feb 27, 2026 · Artificial Intelligence

How to Build Secure, Scalable LLM Agent Tools: Best Practices & Real-World Cases

This article explains why robust Agent Tools are essential for LLM agents, outlines a five‑stage lifecycle with concrete design principles such as type safety, LLM‑friendly interfaces, OpenAPI integration, self‑healing error handling, human‑in‑the‑loop safeguards, and performance optimizations, and demonstrates their impact through retail and fintech case studies.

Agent toolsIndustry CasesLLM

0 likes · 20 min read

How to Build Secure, Scalable LLM Agent Tools: Best Practices & Real-World Cases

ByteDance SE Lab

Aug 21, 2023 · Artificial Intelligence

How Fastbot Uses Reinforcement Learning for Faster Android GUI Testing

Fastbot is a reusable, model‑based Android GUI testing tool that leverages reinforcement‑learning techniques to learn from previous test runs, accelerating coverage and crash detection through a two‑phase workflow, probabilistic and learning‑based event selection, and provides configurable custom events, widget blocking, and tree‑pruning features.

GUI automationandroid testingfastbot

0 likes · 16 min read

How Fastbot Uses Reinforcement Learning for Faster Android GUI Testing

ByteDance SE Lab

Nov 30, 2022 · Information Security

Uncovering Android Security and Compatibility Flaws: Tools & Insights

Join the Infra Talk session where PhD researcher Xiaoyu Sun reveals how Android security and compatibility defects arise, demonstrates static and dynamic analysis techniques, and showcases open‑source tools for detecting privacy leaks and framework incompatibilities, while outlining future research directions.

AndroidMobile Developmentcompatibility

0 likes · 4 min read

Uncovering Android Security and Compatibility Flaws: Tools & Insights

ByteDance SE Lab

Sep 26, 2022 · Mobile Development

Inside ByteDance’s AppInfra: How Mobile Infrastructure Powers Millions of Apps

This interview reveals how ByteDance’s AppInfra team builds and evolves mobile infrastructure, performance optimization, automated testing, and talent strategies to support a growing portfolio of high‑traffic apps like Douyin and Toutiao, offering insights into cross‑platform toolchains, team organization, and future technology trends.

Automation testingInfrastructureTeam Organization

0 likes · 18 min read

Inside ByteDance’s AppInfra: How Mobile Infrastructure Powers Millions of Apps