| 2023 | 28 | Security Protocols XXVIII - 28th International Workshop, Cambridge, UK, March 27-28, 2023, Revised Selected Papers | Cambridge | |
| 2019 | 27 | Security Protocols XXVII - 27th International Workshop, Cambridge, UK, April 10-12, 2019, Revised Selected Papers | Cambridge | |
| 2018 | 26 | Security Protocols XXVI - 26th International Workshop, Cambridge, UK, March 19-21, 2018, Revised Selected Papers SPW | Cambridge | 2018-03-19/21 |
| 2017 | 25 | Security Protocols XXV - 25th International Workshop, Cambridge, UK, March 20-22, 2017, Revised Selected Papers SPW | Cambridge | 2017-03-20/22 |
| 2016 | 24 | Cambridge International Workshop on Security Protocols SPW, Security Protocols | Brno | 2016-04-07/08 |
| 2015 | 23 | Cambridge International Workshop on Security Protocols SPW | Cambridge | 2015-03-31 to 2015-04-02 |
| 2014 | 22 | Cambridge International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2014-03-19/21 |
| 2013 | 21 | Cambridge International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2013-03-19/20 |
| 2012 | 20 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2012-04-12/13 |
| 2011 | 19 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2011-03-28/30 |
| 2010 | 18 | Cambridge International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2010-03-24/26 |
| 2009 | 17 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2009-04-01/03 |
| 2008 | 16 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2008-04-16/18 |
| 2007 | 15 | International Workshop on Security Protocols SPW, Security Protocols | Brno | 2007-04-18/20 |
| 2006 | 14 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2006-03-27/29 |
| 2005 | 13 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2005-04-20/22 |
| 2004 | 12 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2004-04-26/28 |
| 2003 | 11 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2003-04-02/04 |
| 2002 | 10 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2002-04-17/19 |
| 2001 | 9 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2001-04-25/27 |
| 2000 | 8 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 2000-04-03/05 |
| 1999 | 7 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 1999-04-19/21 |
| 1998 | 6 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 1998-04-15/17 |
| 1997 | 5 | International Workshop on Security Protocols SPW, Security Protocols | Paris | 1997-04-07/09 |
| 1996 | 4 | International Workshop on Security Protocols SPW, Security Protocols | Cambridge | 1996-04-10/12 |