Choices

Competition · Hybrid

Grey Cat The Flag (GreyCTF) 2027

NUS Greyhats (supported by the National Cybersecurity R&D Lab) · Singapore, Singapore

Applications upcoming

An annual Capture-The-Flag cybersecurity competition hosted by NUS Greyhats, with a Local Category for pre-university and undergraduate students who are Singapore citizens or PRs.

Grade
JC1 – JC2
Same as Grades 11–12 in the US
Age
Not published
Details under Eligibility
Citizenship
Singapore
Entry
Open application
Check it against your grade

Challenges cover AI, cryptography, forensics, binary exploitation (pwn), reverse engineering, web and miscellaneous tasks. The organisers describe it as beginner-friendly, with hard challenges for stronger teams. There is no team-size limit for qualifiers, but each team can send up to 4 members to the finals.

Topics

TechnologyCapture the FlagPre-universityTeam competition
Read more on ctf.nusgreyhats.org
See all