SPHERE23 is coming. Are you in?

Mark your calendars for 24 and 25, May 2023



We’re thrilled to announce SPHERE23 will take place on May 24 and 25 in beautiful Helsinki, Finland.

As the first co-security conference ever, SPHERE22 reimagined what’s possible for a cyber security gathering. We’ve taken your feedback from the sold-out event and look forward to blow even more minds this year.

That’s why we’re inviting you to join us. Grab one of the limited seats available to co-create with other trailblazers and makers, technology experts and thinkers, entrepreneurs and business leaders who want to make a positive impact. 

SPHERE23 blends the inspiration of a traditional conference with the excitement of a participant-driven unconference. You’ll enjoy dynamic talks on the main stage. And you’ll also have plenty of time to participate in interactive live demos and connect with peers from around the world.

So don’t miss out.

Book your calendar and register for the second co-security unconference ever. Now.

We are now SOLD OUT!

If you don’t have a ticket, please message your WithSecure contact now as we may receive cancellations today or even tomorrow morning. You can reach out to them via phone call, email, or LinkedIn.

Accommodation for SPHERE23


WithSecure will make your hotel reservation and cover your accommodation expenses between 23 and 25 May. The hotels we are partnering with are Radisson Aleksanteri, GLO hotel Art, and Clarion Hotel Helsinki – all conveniently located near the SPHERE23 event location. Upon your registration, we will confirm your booking, including which hotel we have secured for you.

Please note that confirming these details might take some time as we are currently processing over 400 registrations.

Plan to stay longer in Helsinki?

  • If you wish to extend your stay in Helsinki, you will need to make your own booking and cover expenses. Radisson Aleksanteri, GLO Hotel Art, and Clarion Hotel Helsinki all currently have availability during that time, but keep in mind that Helsinki gets very busy in late May, so getting a room for extra nights may be difficult as the event draws closer. 
  • If you are yet to register your place at SPHERE23, please note that we confirm new bookings with each of these hotels twice a week, and as each has a slightly different booking process, allow for a slight delay in getting your confirmation. After you have received your hotel booking confirmation, feel free to contact them for any extra nights.
  • If these hotels do indeed fill up before you can book your extended stay, fear not, Helsinki has many other beautiful hotel options too!