umpox
Re:A free tool that stuns LLMs with thousands of invisible Unicode cha...
on Monday November 24, 2025 @06:09AM (#46032753)
You can also give the LLM hidden messages with a small bit of prompting, e.g. https://umpox.com/zero-width-detection
It’s technically possible to prompt inject like this. I actually reported this to OpenAI back in April 2023 but it was auto-closed. (I mean, I guess it’s not a true vulnerability but kinda funny it was closed within 5 mins)
Re:Show HN: A Twitter/Instagram bot that (badly) attempts to caption a...
on Tuesday November 26, 2019 @06:03PM (#21643647)
Twitter: https://twitter.com/imagecaptions
Instagram: https://www.instagram.com/computergeneratedcaptions/
Takes a random image from Unsplash and attempts to caption it, posts to social media if it's under 85% confident of the result - which leads to some interesting outcomes!
Re:Show HN: A Twitter bot that uses computer vision to caption random ...
on Wednesday May 30, 2018 @02:56PM (#17190564)
From now, the bot should post around every 3 hours or so :-)
Show HN: A Twitter bot that uses computer vision to caption random photos
Re:Be careful what you copy: Invisibly inserting usernames into text
on Wednesday April 04, 2018 @03:12AM (#16752658)
If anyone isn't too keen on reading the article:
Source Code: https://github.com/umpox/zero-width-detection
Invisibly inserting usernames into text with Zero-Width Characters
Re:Show HN: Pdf-Bot, an API/CLI for Generating PDFs Using Headless Chrome
on Tuesday August 22, 2017 @05:50AM (#15070910)
Pretty cool! Check out Google's headless browser API Puppeteer too, they provide a few really useful functions for doing stuff like this.
https://github.com/GoogleChrome/puppeteer/blob/master/exampl...
Really easy to work around, I used it to build a simple CLI to generate device screenshots of a webpage by modifying the user-agent and resolution to match each device.