The founder lectured me in Uni. They're an anti-AI CAPTCHA technology in Brisbane.

GitHub uses them too. They've been adversarial to AI advances for quite a while now.

Definitely thinking well ahead of the curve.

Many having this issue. More discussion here: https://news.ycombinator.com/item?id=39686914

Edit: Fixed; confirmed as of 13:37 GMT+11, March 12, 2024.