bi0s Recruitment

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SHOW US WHAT YOU CAN PROVE YOURSELF AND GRAB A SPOT

A full-width callout for the next bi0s recruitment cycle.

NOTE: This Recruitment drive is only for upcoming freshers in the Amritapuri campus (’26–’30 batch). We are not recruiting Second years (Sem 3) or Third Years (Sem 5) students.

JOIN BI0S RECRUITMENT 2026

Resources

WSL

Just a Linux terminal inside Windows.

Tutorial

Dual Boot

Boot into Linux or Windows with full GUI. Depending on your domain, dual boot may be needed later.

Tutorial Video

Virtual Machine (VM)

Run full Linux inside Windows.

Tutorial

Mac Setup

No need to install Linux. Just install Homebrew.

Tutorial Video

Installing Packages

Each distro uses different package managers. Learn the differences here.

Video

Practice Challenges

Small CLI puzzles to sharpen skills.

Cmd Challenge
01 / 4N6

Fragments of deleted memories linger beneath the surface. Reconstruct the timeline and uncover what was never meant to survive.

02 / WEB

Every endpoint is a gateway waiting to be explored. Probe the system, bypass defenses, and expose hidden functionality.

03 / PWN

Memory is the battlefield where control is won. Manipulate execution and turn the machine against itself.

04 / REV

Strip away layers of compiled logic to reveal the truth. Every instruction brings you closer to understanding the system.

05 / CRYPTO

Encrypted transmissions conceal more than simple messages. Break the cipher, recover the key, and reveal the hidden signal.

About bi0s

Team bi0s is a community of passionate college students striving to make the world a safer place through security research and excellence in CTF competitions.

Areas of focus include web security, forensics, reverse engineering, cryptography, hardware and many other domains.

Founded in 2008 by our mentor Shri Vipin Pavithran, bi0s has grown into one of India's leading CTF teams.

Vipin

What We Do

bi0sCTF consistently ranks among the top Capture The Flag teams in India (CTFtime since 2016). Read our blog

Beyond CTFs, our members conduct security research, discovering vulnerabilities in virtualization software, CMS platforms, operating systems, web technologies and much more.

We are actively involved in international competitions, collaborative research, mentoring programs and workshops that help students grow into security researchers.

bi0s is more than just flags. We host alumni meetups, game nights, sports sessions and community events. Even during online semesters, we've stayed united and active—both socially and technically.