
left until squ1rrel CTF ends.
squ1rrel CTF is a jeopardy-style CTF hosted by the squ1rrel CTF team at Vanderbilt University
Join our discord at https://discord.gg/A6dTKTXNDD and register your team to get started!
- No flag sharing or hint sharing with members of other teams. Challenge guidance should be provided only through ticket channels and no posting flags in public channels
- No online challenge bruteforce or attacking squ1rrel.dev/Vanderbilt University infrastructure
- Student division teams must be composed of current US-based university or high school students to be eligible for prizes.
- Open division teams may be of any size and composition.
- Join the discord server at https://discord.gg/A6dTKTXNDD and contact admins by creating a ticket in #open-ticket
- All teams must provide a valid email address to be eligible for prizes
- Flag format is squ1rrel{} unless otherwise specified
Prize transfers will be arranged with PayPal or Venmo. Winner must provide a valid email address to receive the prize and Student division teams must perform a verification process to confirm their student status.

Palo Alto Networks
Palo Alto Networks is a leading global cybersecurity company providing AI-driven, cloud-native, security platforms to enterprises, service providers, and governments.

Zellic
Zellic is a security research firm. Our targets include compilers, virtual machines, web apps, circuits, proof systems, and more. Before Zellic, we previously founded perfect blue, the #1 CTF team in 2020 and 2021. If you're smart and good at CTFs, we'd love to meet you.
We offer a complete benefits package and direct equity participation. We also offer flexible hours, remote work, and both full-time and part-time roles. Our team enjoys regular fully-funded offsites and a range of other perks.
Ask your friends: you might already know someone who works here.
To learn more, check out our blog: zellic.io/auditooor-grindset
Work at Zellic: [email protected] | zellic.io/careers | @gf_256
Meet the founders:
- Luna: @gf_256 on Discord (Twitter)
- Jazzy @jazzyzellic on Discord (Twitter)

