Updates
- 7 Oct: Awards and closing ceremony can be viewed here. Congrats to top three teams, see you next year!
- 29 Sep: Game on! CISS Finals has arrived! Opening ceremony can be viewed here
- 29 Aug: Finals briefing slides can be downloaded here, and recorded video viewed here
- 5 Aug: Stage 1 result (Top 10) updated!
- 23 July: Stage 1 briefing slides can be downloaded here, and recorded video viewed here
- 21 July: Registration is now closed with 61 Red Teams signed up
- 12 July: A new record of 56 Red Teams have signed up!
- 8 July: 47 Red Teams have signed up; Discord server set up
- 2 July: Briefing for Red Teams will be on 22 July (1600, GMT +8); Red Team leaders and their deputies will receive an email with Zoom meeting link
- 28 June: 42 Red Teams have signed up
- 24 June: Deadline for registration has been extended to 13 Jul 2025
- 20 June: 27 Red Teams have signed up
- 29 May: 15 Red Teams have signed up
- 14 May: CISS 2025 info page created
About
What is CISS 2025?
The Critical Infrastructure Security Showdown 2025 (CISS 2025) is an international, one-of-a-kind cyber exercise in operational technology. It is held remotely, and open to invited international participants. CISS 2025 is sponsored by the Cyber Security Agency of Singapore and co-organised with the Digital and Intelligence Service, Singapore.
The 9th iteration of CISS 2025 returns with a familiar modality and added features:
The 9th iteration of CISS 2025 returns with a familiar modality and added features:
- Two-stage competition: Qualifying round (48-hour CTF) + Finals: “Live” testbed access (4 hours)
- CTF challenge contributions by more local and international collaborators
- Hybrid platforms: OT physical testbeds and cyber twins
- Mystery platform
- Live scoreboard
- No cap on number of teams per organisation, though each team will still be limited to 8 persons
- Larger cash prize for the top 3 finalists: S$5,000 / S$3,000 / S$2,000
Access to world’s largest interconnected industrial-grade critical infrastructure playground
A novel and complex OT system awaits participants of CISS 2025.
Evolution of CISS
Past CISS Red Teams (selected)
Programme schedule
Important dates (subject to changes)
Awards and results
Rise to the challenge
The top 3 Red Teams stand to win attractive cash and novelty prizes!
1st prize: S$5,000
Winner
RedCube A
2nd prize: S$3,000
Winner
T-Lao-Sec
3rd prize: S$2,000
Winner
Stanford Applied Cyber
Results
CISS 2025 Stage 1 results (Top 10)
- 0x90
- ADFCSA
- die_trying
- RedCube A
- Stanford Applied Cyber
- T-Lao-Sec
- Team Baguette
- TuAMK Goblins
- UncleCY
- YCelcnU
Partners and sponsors
To be a sponsoring partner, please contact itrust@sutd.edu.sg for sponsorship opportunities.
Challenge contributors
Organised by
Supported by
