The latest security news for developers - The GitHub Blog

AI is changing the pace of open source development and the security challenges that come with it. Maintainers are reviewing unfamiliar contributions, managing new attack surfaces, and responding to vulnerabilities with limited time and resources.

Session 4 of the

A compromised package can steal credentials the moment you install it, and until recently, GitHub could only flag those in npm. Not anymore. This is the story of how the supply chain engineering team behind Dependabot expanded malware advisories to eight ecosystems by building on OpenSSF’s shared malicious packages data.

Here’s where things stand: earlier this year...

If you maintain an active repository, you know the feeling. You open your notifications on a Monday morning and there they are: five, 10, sometimes a dozen Dependabot pull requests, each bumping a single dependency by a single patch version. Individually, every one of them is helpful. Collectively, they’re noise. And noise is how important updates get ignored.

We l...

In the past year, there’s been a pattern of supply chain attacks that target weaknesses in package repositories and CI/CD systems to quickly spread malware to hundreds of open source projects. This malware seeks to exfiltrate credentials both to broadly spread the attack, as well as for later exploitation.

We’ve written a few times about our plans for hardening the...

In September 2025, an attacker phished the credentials of a single npm maintainer and published booby-trapped versions of chalk, debug, and around a dozen other packages that are together downloaded more than 2 billion times a week. The code rewrote cryptocurrency wallet addresses inside any browser app that loaded it. The poisoned versions were live for roughly two hours be...