I've got some credit cards but I don't which ones are valid.

A challenge where participants analyze a YouTube video featuring a cat dancing to music playing only in the left channel, looping for 10 hours. The goal is to extract a hidden Morse code from the audio and decode it to find the flag.

A spiritual successor the first.

Tired of getting your corporate mergers blocked by the FTC

It seems like companies have document leaks all the time nowadays. I wonder if this company has any.

I wrote an amazing encryption service. It is definitely flawless, so I'll encrypt the flag and give it to you.

I really really like RSA, so implemented it myself <3.

Hey, my digital cat managed to get into my server and I can't get him out.

I've heard that everyone just uses dcode.fr to solve all of their crypto problems. Shameful, really.

Based on the military-grade encryption offered by AES-256, RSA-256 will usher in a new era of cutting-edge security... or at least, better security than RSA-128.

A challenge where signing a magical contract accidentally involves the flag instead of one's name.

task

So many function calls... but are they that different?

I tried to make my own version of cookie clicker, without all of the extra fluff.

We're building the next generation flag sharing social media inside discord! Join us for the fun flag sharing activity, well uhm actually I might need to finish testing my code. Use code 'flag' to get instant access to the flag!

What about a quine?

I wrote code to try to solve the problem the omniscient god solved but it was too slow (it works tho!!). Can you help?

okay sorry here's a real jail.

Good luck getting anything to run.

Client side rendered python turtle sculptures, why don't we play around with them.

Somehow I think the pico one had too many unintendeds...

average southern californian reacts to DC weather. amazing scenery though at the time.

my friend keeps asking me to play OneShot. i haven't, but i made this cool challenge!

check out this cool font i made!

Please aes-decrypt the flag for me:

I was on an in-state skiing trip with my family when we decided to go out and see some sights. I remember needing to go to the bathroom near where these pictures were taken and then leaving a review. Can you find this review for me?

wow sanity check go join the discord.

what options do i have?

[survey](https://forms.gle/yhv7NoHnkzFPwJbm8)