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About CISS 2025
Critical Infrastructure Security Showdown 2025 (CISS 2025) is a premier and one-of-its-kind cyber exercise in operational technology. This international exercise is held entirely remotely and opened to invited international participants. CISS 2025 is sponsored by the Cyber Security Agency of Singapore and co-organised with the Ministry of Defence, Singapore.
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
- Increased cash prize for top 3 finalists: S$5,000 / S$3,000 / S$2,000
CISS 2025 Finals Results
TBC
Updates
Access to world’s largest interconnected industrial-grade critical infrastructure playground
A novel and complex OT system awaits participants of CISS 2023
Registration for CISS 2025
Red Teams can form up to 8 members per team and there is no cap on the number of teams per organisation.
Please register here by 1 Jul 2025!
Prizes
The top 3 Red Teams stand to win attractive cash and novelty prizes!
1st prize: S$5,000
2nd prize: S$3,000
3rd prize: S$2,000
Past CISS Red Teams (selected)
Sponsoring Partners
Please contact itrust@sutd.edu.sg for sponsorship opportunities.
CISS News & Event Gallery
CISS2023 Award Ceremony
CISS2023 Opening Ceremony
CISS2022 Award Ceremony
CISS2022 Opening Ceremony
CISS2021-OL Opening Ceremony
CISS2020 Award Ceremony
CISS2021 Award Ceremony
CISS2020-OL Opening Ceremony
CISS2019
