TISC 2025 Summary

Summary

We’ve located the core. The gears have shifted—we’re no longer reacting; we’re in control.

Now, let’s chart the course to victory. It’s time to sharpen our skills and prepare for the final showdown.

Participants completed a series of challenges across domains such as Web Penetration, Forensics, Reverse Engineering, Binary Exploitation, Cryptography, Mobile, Cloud and OSINT.

Participants were once again able to chart their own course to the final mission by choosing from either Track A or B.

TISC 2025 was held over 16 days, from 12 Sep 2025 (2100H) - 28 Sep 2025 (2100H).

Statistics

1,325 cybersecurity experts answered the call in TISC 2025 to track down the source, with 920 solving at least one challenge. Cloud/ Web-focused challenge (i.e., Track A) proved to be the more popular route for those who completed Level 7 and 8. Here are some statistics:

2025 Winners' Results

A total cash prize pool of S$30,000 was up for grabs.

9 deserving challengers won cash prizes this year:

Level 12

$21,111

Rank	Name	Total Time taken
1	Gerrard Tai	11 days, 1 hour, 5 minutes and 27 seconds View write-up

Level 12

$21,111

Gerrard Tai

11 days, 1 hour, 5 minutes and 27 seconds

Level 10

$1,111 (each)

Rank	Name	Total Time taken
2	Meng Xiang	4 days, 22 hours, 26 minutes and 46 seconds View write-up
3	Cai Shuce	6 days, 15 hours, 23 minutes and 32 seconds View write-up
4	Lucas Tan Yi Jie	8 days, 10 hours, 49 minutes and 34 seconds View write-up
5	Ou Yang Zhong Liang	11 days, 11 hours, 40 minutes and 25 seconds View write-up
6	Goh Joshua	13 days, 21 hours, 21 minutes and 43 seconds View write-up
7	Chia Zong Ying, Elijah	14 days, 19 hours, 36 minutes and 6 seconds View write-up
8	Tay Wei Jie	14 days, 8 hours, 53 minutes and 52 seconds View write-up
9	Yeo Beng Jun Vincent	15 days, 12 hours and 34 minutes View write-up

Level 10

$1,111 (each)

Meng Xiang

4 days, 22 hours, 26 minutes and 46 seconds

Cai Shuce

6 days, 15 hours, 23 minutes and 32 seconds

Lucas Tan Yi Jie

8 days, 10 hours, 49 minutes and 34 seconds

Ou Yang Zhong Liang

11 days, 11 hours, 40 minutes and 25 seconds

Goh Joshua

13 days, 21 hours, 21 minutes and 43 seconds

Chia Zong Ying, Elijah

14 days, 19 hours, 36 minutes and 6 seconds

Tay Wei Jie

14 days, 8 hours, 53 minutes and 52 seconds

Yeo Beng Jun Vincent

15 days, 12 hours and 34 minutes

Challenge Creators

A big thank you to all challenge creators! Your challenges have allowed cybersecurity experts to put their skills to the test and your identity will now be revealed:

Level 1 - Target Reference Point 🛰️ GEOINT (OSINT)

Level 2 - The Spectrecular Bot (Web)

Level 3 - Rotary Precision (Forensics)

Level 4 - Spectre Memory (Prompt Injection, Misc)

Level 5 - SYNTRA (RE, Misc)

Level 6 - Passkey (Web)

Level 7A - Santa ClAWS (Web, Cloud)

Level 7B - SIGNULL (Mobile, Web)

Level 8A - VirusVault (Web)

Level 8B - Super "Optimised" Swap (Pwn)

Level 9 - HWisntThatHardv2 (IoT, Hardware)

Level 10 - Countle Secured Storage (Web, RE, Crypto, Misc)

Level 11 - Ash Twin (Web, Pwn)

Level 12 - SpectreChrome (Pwn, Browser Exploit)

TISC Swag

Top 50 who solve the most levels in the shortest time will receive a customised and exclusive TISC keycap.

Digital Badge

Participants can feature your digital badge on social media platforms like LinkedIn (and tag us @csitsg)!

All participants will receive a digital badge as a memento for their participation in TISC 2025.

Participants who completed at least level 5 will receive a digital badge indicating their highest level completed.

Challenge Creators will receive this digital badge as a token of appreciation for designing challenges for TISC 2025.

All participants will receive a digital badge as a memento for their participation in TISC 2025.

Participants who completed at least level 5 will receive a digital badge indicating their highest level completed.

Challenge Creators will receive this digital badge as a token of appreciation for designing challenges for TISC 2025.

See you in TISC 2026 for the final showdown!