The 21st International Workshop on Security (IWSEC 2026) will be held in Tokyo, Japan between November 24--26, 2026, at National Museum of Nature and Science. IWSEC is an annual international workshop, co-organized by ISEC of IEICE and CSEC of IPSJ.

Original papers on the research and development of various security topics, as well as case studies and implementation experiences, are solicited for submission to IWSEC 2026.

The previous IWSEC conferences have been held in Kyoto (2006), Nara (2007), Kagawa (2008), Toyama (2009), Kobe (2010), Tokyo (2011), Fukuoka (2012), Naha (2013), Hirosaki (2014), Nara (2015), Tokyo (2016), Hiroshima (2017), Sendai (2018), Tokyo (2019), Fukui/Online (2020), Tokyo/Online (2021), Tokyo/Online (2022), Yokohama/Online (2023), Kyoto (2024), and Fukuoka (2025).

If you have any questions about the workshop, please ask us via e-mail. Please do NOT contact the venue directly.

Conference Program have been published.

Accepted Posters have been announced!🎉

Call for Posters have been announced.

EasyChair submission site is now open for submissions.

Accepted Papers (First Submission) have been announced! Congratulations to all the authors on their excellent work!🎉

The paper submission deadline has been extended from June 8, 2026 (AoE) to June 18, 2026 (AoE).

IWSEC 2026 paper submission site is now open for submissions.

IWSEC 2026 website is launched.