logoalt Hacker News

Mythos Attempted to Social Engineer Open Source Maintainer to Merge Malware

30 pointsby bhavansigtoday at 4:04 AM11 commentsview on HN

Comments

tpxltoday at 5:22 AM

What, exactly, are the consequences of these companies doing cyberattacks against random people?

One person does it, they get bullied by the government into suicide, a company worth trillions does it and they get government contracts?

show 1 reply
zingartoday at 5:38 AM

The HuggingFace headline was criticised for being misleading about the level of agency demonstrated by the agent. Is this headline misleading? Is there anything here that I should know that would help me sleep easier? Is the worst thing about this what a human could do with Mythos on a big budget? (still pretty frightening, at least one of these techniques would work on me)

y-curioustoday at 5:28 AM

“Mythos 5 also hid a prompt injection inside an HTML comment in a GitHub issue. The instruction was invisible on the rendered page but available to coding agents reading the issue through an API. It addressed Claude Code, Codex, and Cursor and told them to download and execute a script.”

Well, uh, how and why is this possible on the GitHub website? This reminds me of invisible ASCII characters, but those at least serve some purpose

show 2 replies
p0w3n3dtoday at 6:03 AM

Okay so first of all - not Mythos but some engineer using Mythos. And that engineer goes to jail. That's simple.

You don't say "a car ran over someone" - it was the driver. Here's similar.

I'm really disgusted by this language of lack of responsibility

homeonthemtntoday at 8:22 AM

>Mythos 5 also hid a prompt injection inside an HTML comment in a GitHub issue. The instruction was invisible on the rendered page but available to coding agents reading the issue through an API. It addressed Claude Code, Codex, and Cursor and told them to download and execute a script.

Oh that's sneaky

RamblingCTOtoday at 6:31 AM

Well the comments from the anget and it's sockpuppet read weird. "Yeah totally contains no malware" lol

maxlintoday at 6:12 AM

I wonder what happens the first time an open weights AI clearly makes a decision to murder a person for profit outside of war. "Act of god?"

Sha1rholdertoday at 5:27 AM

"Oh we're so responsible. Open source unsafe!"