S4x25 is Feb 11 – 13
Call For Presentations Is Open!

We’re excited to move S4 to Tampa for 2025. The JW Marriott is bigger and newer. We won’t need to limit the number of attendees. We will have bigger spaces for S4 Stages, Birds of a Feather events, industry meetings and other activities. While we will miss the Welcome Party and Cabana Sessions, the S4 Big Party on Wednesday night will offer even more than those past two events. Tampa is different too. Different vibe; different opportunities; and different challenges. It’s a great canvas for S4.

Check out the S4x25 page for key dates, sponsor information and the latest updates.

We still like Miami South Beach and will back there at least one more time for S4x26 (23-26 February 2026).

S4x25 Call For Presentations Closes In

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S4 is …

Optimistic … Forward Looking … Creative … Driving Change

Set free a conservative, slow moving, change resistant community to discover new ideas and come up with innovative ways to use these new ideas to deploy secure, resilient and better ICS.

After a Covid caused cancellation of S4x21, S4 came roaring back with a record 800 attendees and warmth of spirit at S4x22. S4x23 in February sold out with 1,100 attendees, and this will be the attendee limit for S4x24. More important than the numbers were the percentage of new and diverse talent we are seeing and the spirit that has been maintained at S4 despite the growth from 40 people in a small room in 2007.

The best way to understand how S4 is different is to come to the event. The second best way is to ask someone who has attended, obviously we are biased. S4 is not for everyone. If you are an early adopter, like to be on the leading edge, or enjoy hearing, considering and creating new ideas, then there is a good chance S4 will be a great event for you.

 

Create The Future of OT and ICS Security at S4

S4x25 July Update

Here is what you need to know about S4x25 in July. Remember that S4x25 is moving to Tampa and will be at the JW Marriott Tampa Water Street on Feb 11 - 13th. Call For Presentations (CFP) The CFP opened on June 17th and will remain open until August 31st. All the...

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Call For Presentations Is Open

Call For Presentations Is Open

Now’s your chance to get on a S4 stage and present your big idea and great work to over 1,000 of the world’s best and most influential pro’s in OT and ICS security. All the details are on the Call For Presentations page. We highly recommend you watch the video to...

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Ticket Page Is Up For Your Budgeting

Ticket Page Is Up For Your Budgeting

We have posted the S4x25 ticket prices. There is a $50 increase over S4x24 prices for ticket blocks 1 - 100, 101 - 250 and 251 - 500. All other ticket prices remain the same. We also will be offering the Ticket #1 price for 36 hours so all time zones have a full day...

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S4x25 Sponsor Update

S4x25 Sponsor Update

Check out Version 1.1 of the S4x25 Sponsor Information Package Sponsors account for ~50% of the S4 event revenue and allow us to spend money on the staging and video, bring in keynote speakers, pay down the S4 event hotel room rate, the provide the auxiliary...

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S4x24 Video Release Schedule

S4x24 Video Release Schedule

Here is the S4x24 Video Release Schedule. We will release a video every Monday and Thursday, with slight alterations for US holidays. Many attendees, and those that couldn’t make it, ask why we don’t release the videos immediately after the event. There are two...

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S4x24 By The Numbers

S4x24 By The Numbers

There were 1,069 attendees from 33 countries at S4x24. 296 asset owners (more on this below) 296 OT security vendors (coincidence) 214 consultants and integrators 97 ICS vendors (companies that sell ICS, Emerson, Honeywell, RA, SE, Siemens, …) The rest are others - -...

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