AI Coding & Developer Tools — September 24, 2026

Findings

1. [1] 2026-09-24 Require proof of presence for high-impact actions

   You can now require an interactive re-authentication or a multi-factor challenge before members take high-impact actions on GitHub Enterprise Cloud accounts. Proof of presence is an expansion of GitHub’s sudo mode for enterprises, enforcing a higher security bar when it’s needed. This public preview is only scoped to managed user (EMU) enterprises on github.com and GHEC-DR that use Microsoft Entra…

2. [2] 2026-09-24 When chat is the wrong UI

   We’re 176 years into this AI experiment. Wait…it’s only been three years? Are you sure? Sometimes I remember things that happened last year, but it feels like it was so long ago. Did that really happen to me, or was… In all seriousness, I do think being boxed in by the chat UI may be working against us all right now. This is making it hard to figure out how to solve actual problems, because it’s not at all obvious…

3. [3] 2026-09-24 AI-powered fuzzing with the GitHub Security Lab Taskflow Agent

   If you’re new to fuzzing and want to learn the fundamentals first, check out our Fuzzing 101 course at gh.io/fuzzing101. Continuous fuzzing is not a magic solution that solves all your problems . Even projects that have been enrolled in… And just like in my manual workflow, I need an answer to the question: when do we stop? Here, the loop uses plateau detection: once two consecutive iterations each gain less than a configurable threshold (1% absolute line coverage by… I started this project motivated by the limitations that any security researcher knows well: fuzzing works, but it doesn’t scale without human attention, and that human attention is the bottleneck. The Fuzzing Taskflow is my attempt to push that bottleneck…

4. [4] 2026-09-23 Developers want more efficient software. Here’s what over 1,000 GitHub users told us they need.

   Developers know efficient software matters, but many lack a clear way to find waste, measure an improvement, and make the case for fixing it. That is the central finding from a new survey of 1,039 GitHub users conducted by GitHub… The open source Daily Efficiency Improver workflow reviews a repository for opportunities across code, data, network, I/O, and frontend performance. It prioritizes changes that can be measured, runs the repository’s tests, and can open draft pull requests with the evidence…

5. [5] 2026-09-23 Building the new GitHub Copilot Inline Suggestions Model: Part Two

   See how GitHub Copilot added completions to its unified inline suggestions model, refined ghost text and editor behavior, and improved user satisfaction. Read the full article

Sources

1. [1] Require proof of presence for high-impact actions
2. [2] When chat is the wrong UI
3. [3] AI-powered fuzzing with the GitHub Security Lab Taskflow Agent
4. [4] Developers want more efficient software. Here’s what over 1,000 GitHub users told us they need.
5. [5] Building the new GitHub Copilot Inline Suggestions Model: Part Two