S4 TESTIMONIALS

The future of OT security is happening now, and S4x25 is where the brightest minds come together to shape it. 🌍

– Luca Barba

What a week in#S4x25 😮‍💨 this week has been a game / life changer for me!
I can’t wait to see what the future holds 🏆🔮🥅🤝

– Mariam A. Coladonato de Gallegos

🛡️ Why I love S4:
🔥 Incredible talks from industry leaders
🤝 Catching up with amazing friends, colleagues, and sponsors
🎉 Connecting with everyone—from first-timers to seasoned veterans

🔐 Whether you’re here to learn, network, or just soak in the energy
of the ICS/OT cyber community, this is THE place to be.

– Aaron C. Crow

One of the most incredible experiences I’ve had in my career. I met so many inspiring people in the ICS Cybersecurity community and gained so much valuable knowledge about the field. S4 was an unforgettable event! It was so meaningful to be able to share the experience with a group of amazing women in the space.

– Rebecca Daniels

Always excited to be at S4—a community where I first learned
the ropes of OT. Great to reconnect and engage with the
brilliant minds of ICS and OT cybersecurity.

The best part? Learning never stops, especially with a community
brew in one hand and a beer in the other! 🍻🔒
Thank you so much Dale Peterson for bringing us together
with a fun and remarkabale experience 🏄🏽

– AJ Eserjose

Being a successful cybersecurity recruiter isn’t just about who
you know or matching keywords on a resume—it’s about understanding
the culture, the mindset, and the way security professionals think.
And you can’t fully get that from behind a screen.

After just getting back from #S4x25 in Tampa, that point is clearer than ever.

– Colleen Riccinto

I first heard about S4 in 2017, when I joined a bunch
of crazy Italians in a Dutch startup. Since them we
became part of Forescout, navigated a pandemic
working remotely but together, and in 2025,
we’re still here—still passionate about
OT security in the Vulnerability Management Pavilion at S4.

Three intense days. A zillion meetings.
Reconnecting with old friends.
And learning.

– Luca Barba

Great energy at S4x25, fantastic interactions,
insightful conversations, and some amazing networking!

– Pallavi Singh

Attending S4x25 as a WICSS Scholarship recipient has been
an incredible opportunity to connect with experts,
explore cutting-edge ICS security products, and gain
valuable insights that will shape my future in the field.
One of the most inspiring parts of this experience has been
meeting so many brilliant women in cybersecurity.

Seeing their passion and impact in this field is so encouraging,
and reinforces my excitement for the future of ICS security.

– Donna Thakadipuram

I could never have imagined how impactful it would
be for me to attend and to meet other women
in my industry of ICS/OT Security!

My favorite part aside from the experience of S4 itself
was to spend time with a group of women who are
passionate about ICS/OT security! It was the happiest
I have been in a long time; my career is extremely
important to me and I spend a lot of time in the
headspace of ICS/OT security—to have that be an
external experience was just phenomenal.

– Josephine Hollandbeck

Had a blast (again) this year at S4. It was another year of feeling the pulse of
where the OT Cyber industry is moving and catching up with friends in the industry.

I was reminded of the importance of this community not just for our role in
society but also how crucial it is to keep this community engaged
and exchanging ideas.

Big congrats to Dale Peterson for another successful event,
for keeping us OT folks together! Looking forward to S4x25!

– Michael Ng Chien Han – Ir (GTS/PD&T)

Really enjoyed connecting with new members of the ICS community and reestablishing old friendships.

I love working and being a part of such a special community and looking forward so seeing you all down the road. Thank you Dale Peterson for putting this event on and bring together like minded people from all parts of the world focused on the mission of securing critical infrastructure.

– Mike Hoffman

#S4x24 has come to an end.

There’s something uniquely magical about this event: the cutting-edge ideas,
the vibrant atmosphere, the beach, and, most importantly, the people. I had the
chance to meet many fascincating people and see how the members of the
community contribute to the security of railways.

Dale – you’re doing fantastic job of bringing the community together and by
pushing the boundaries. The content and the level of details at the event
are unparalleled

Looking forward to many more to come.

– Miki Shifman

First day at #s4x24 has been incredible. Very exciting to see how the topic of
OT cybersecurity continues to grow in relevance and how much progress has
been made. In addition, the collaboration that is happening between system
owners, technology providers, service teams, and thought leaders is impressive.

So humbled to learn from and work with this amazing community!
Together there is no challenge that cannot be tackled!

– Matthew Cosnek

This conference stands alone in its ability to gather such a high caliber of practitioners and thought leaders, all generously sharing their expertise with the singular aim of advancing our community and industry. The atmosphere is remarkably open and welcoming; whether you’ve dedicated 20 years to industrial automation or are newly intrigued by the field, the willingness of participants to offer advice and share knowledge freely is truly exceptional.

– Jonathan Gordon