Computer Security Symposium 2026 (CSS2026)

Overview

The central academic symposium for security research in Japan, run by IPSJ's Computer Security research group since 1998. It convenes co-located workshops on malware countermeasures (MWS), privacy (PWS) and usable security (UWS) across five days, spanning formal theory through psychological and social dimensions. The host city rotates annually, with Hamamatsu hosting in 2026.

Program

• General sessions (20 minutes per paper) run in parallel across up to 8 rooms (A to H)
• 8 co-located workshops: MWS, PWS, UWS, OWS, BWS, AWS, FWS and TWS, including MWS Cup and PWS Cup
• Keynote on Day 1 and an invited talk on Day 3
• Two demonstration (poster) sessions and an international paper challenge session
• Award ceremony and the CSS x 2.0 lightning talks on Day 3 evening (in person only, talks require application); banquet on Day 4 evening (separate fee)
• Technical tour after the closing on the final day

Foundation

Founded

1998

Founder

IPSJ Computer Security Research Group (CSEC)

Launched as CSS'98. It has rotated through Okayama, Kobe, Fukuoka, Kumamoto, Nagasaki, Sapporo, Akita, Shimane, Niigata, Toyama, Okinawa, Nara, Kyoto, Kitakyushu, Osaka, Morioka, Kanazawa and Hiroshima, making regional host cities the norm.

Transition

1. 1998 First edition held as CSS'98
2. 2008 The malware countermeasures workshop (MWS) began running alongside it
3. 2025 Held in Okayama
4. 2026 Held October 19-23 at Act City Hamamatsu and online