I just use GitHub's username is charliechaplindev, then I have [email protected]

Use OSINT tool [GHunt](https://github.com/mxrch/GHunt),

```
python ghunt.py email [email protected]
```

I receive a link to Google Map [https://www.google.com/maps/contrib/117833363030761934622/reviews](https://www.google.com/maps/contrib/117833363030761934622/reviews)

In this link, there is a image with flag.


Answer: **uiuctf{b0rk_b0rk_1_lOv3_mY_d0g<3}**