What technologies does Cryspen use?

Cryspen uses Gmail, Google Apps, Varnish, Mobile Friendly, Scala. View their full technology stack — including all 13 detected tools — on StackWho.

Who is the Co-Founder & CEO of Cryspen?

Franziskus Kiefer is the Co-Founder & CEO at Cryspen. Get verified contact information on StackWho.

Where is Cryspen located?

Cryspen is based in Paris, Ile-de-France, France.

Cryspen

cryspen.com

computer & network security

cryspen.com

Paris, Ile-de-France, France

1-10 employees

LinkedIn Profile

About Cryspen

cryptography & formal verification, mls group communication, protocol analysis, openmls, formal specification, b2b, security analysis, cryptography software, cryptography consulting, state forks resolution, formal methods in cryptography, cryptography verification, post-quantum tls handshake, cryptography research collaboration, cryptography research, computer systems design and related services, cryptography in webassembly, formal verification, cryptographic primitives, cryptography tools

Cryspen's Tech Stack

AI/ML

Decision Makers at Cryspen

1 contact

Franziskus Kiefer

Co-Founder & CEO

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13 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

React-based front-ends indicate a modern web engineering stack. Developer tools, component libraries, testing frameworks, and design systems are relevant sales angles.

Cryspen's Position in the StackWho Database

• Cryspen is 1 of 4,889 computer & network security companies tracked in StackWho.
• 4,875 computer & network security companies in our database have verified decision-maker emails (100% of the cohort).
• 12,711 companies in Ile-de-France are in the StackWho database.
• 2,068 computer & network security companies are in the 1-10 employee range (same size as Cryspen).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Cryspen use?

Cryspen uses Gmail, Google Apps, Varnish, Mobile Friendly, Scala, Remote, and 7 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Cryspen?

StackWho has verified email addresses for 1 decision maker at Cryspen. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Cryspen directly for sales, recruiting, or partnerships.

What industry is Cryspen in?

Cryspen operates in the computer & network security industry, headquartered in Paris, Ile-de-France, France. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Cryspen's contact data?

Yes. StackWho Pro members can export decision maker contact data for Cryspen and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.