Company lists · Data refreshed September 2026

Top 25 Cryptography consulting firms based in Paris, France

Name: Cryptography consulting firms based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 9, 2026 80 companies tracked

RevenueBase identified 80 cryptography consulting firms headquartered in Paris, France as of September 2026 and tracks 552 professional contacts across them, including 192 with verified work emails and 23 with mobile numbers. Paris is the largest hub.

This list covers cryptography consulting firms headquartered in Paris, France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 9, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 9, 2026 86% judged on-target in blind review

80Companies

552Contacts tracked

192Verified emails

23Mobile numbers

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The 25 largest cryptography consulting firms based in Paris, France

Ranked by team size

Top 25 of 80 cryptography consulting firms based in Paris, France, ranked by team size, largest first. Data refreshed Sep 9, 2026. RevenueBase Smart Search rates how each company's information relates to cryptography consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Evabssi	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	201-500	117 contacts →
	Partial evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 9, 2026
2	Cyberlift	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	51-200	56 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 9, 2026
3	Systemis	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	51-200	29 contacts →
	Indirect evidence “Created in 2009, Systemis is an international group (50 people, France, Luxemburg, UK) and covers three major areas - Architecture and Counselling in Security- IT Security…” Source: RevenueBase Database · checked Sep 9, 2026
4	Cryptonext Security	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	26 contacts →
	Partial evidence “CryptoNext Security is a software provider specializing in post-quantum cryptography (PQC) and crypto-agility management.” Source: RevenueBase Database · checked Sep 9, 2026
5	Dowsers	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	21 contacts →
	Indirect evidence “Dowsers : : provides cutting-edge cybersecurity solutions and services which enhance trust in new digital assets such as cryptocurrencies, NFTs, smart contracts and digital…” Source: RevenueBase Database · checked Sep 9, 2026
6	WLF	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	21 contacts →
	Indirect evidence “Conseil en Cybersécurité : Stratégie, Gouvernance, Conformité, Audit et Gestion de crise” Source: RevenueBase Database · checked Sep 9, 2026
7	Functori	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	15 contacts →
	Partial evidence “Helping startups, corporates, and joint ventures innovate through top-tier consulting, prototyping, and R&D, with expertise in blockchains and safe & secure programming.” Source: RevenueBase Database · checked Sep 9, 2026
8	Cryptoexperts	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	12 contacts →
	Partial evidence “CryptoExperts SAS is a company founded by internationally recognized industrial and academic researchers in IT security and cryptography.” Source: RevenueBase Database · checked Sep 9, 2026
9	STEEF	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	12 contacts →
	Indirect evidence “Cabinet de Conseils, Créatif et Authentique construit autour d’une communauté composée d’Experts en Cybersécurité.” Source: RevenueBase Database · checked Sep 9, 2026
10	Tilencia	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	9 contacts →
	Partial evidence “Founded in 2021, TILENCIA is an operational consulting firm specialising in digital security strategy around a single mission: operationally supporting organisations in building…” Source: RevenueBase Database · checked Sep 9, 2026
11	Internet Of Trust	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	8 contacts →
	Partial evidence “Founded in February 2014, Internet of Trust is an independent security consulting company based in Paris and in Marseille area.” Source: RevenueBase Database · checked Sep 9, 2026
12	Datakori	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	8 contacts →
	Indirect evidence “Datakori est un cabinet international situé à Paris ainsi qu‘à Abidjan et qui intervient sur la cybersécurité et toute la chaîne de valeur de la data.” Source: RevenueBase Database · checked Sep 9, 2026
13	Blackbart	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	7 contacts →
	Indirect evidence “BlackBart est un cabinet de conseil en cybersécurité accompagnant les organisations publiques et privées dans la sécurisation de leurs environnements numériques et la maîtrise de…” Source: RevenueBase Database · checked Sep 9, 2026
14	Maguen Cyber	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	51-200	7 contacts →
	Indirect evidence “Maguen Cyber was created to provide its clients with the right security services.” Source: RevenueBase Database · checked Sep 9, 2026
15	Reciproc-It	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	7 contacts →
	Partial evidence “Reciproc-it is an Information Security System Consulting Firm.” Source: RevenueBase Database · checked Sep 9, 2026
16	Stelau Conseil	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	6 contacts →
	Indirect evidence “Créé en 2002, Stelau Conseil est un cabinet d'audit et de conseil spécialisé dans la sécurité des systèmes d'information.” Source: RevenueBase Database · checked Sep 9, 2026
17	Leviam	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	5 contacts →
	Indirect evidence “Leviam est un cabinet de conseil spécialisé dans la cybersécurité.” Source: RevenueBase Database · checked Sep 9, 2026
18	Defenso	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	5 contacts →
	Indirect evidence “Defenso est un cabinet de conseil indépendant spécialisé en ingénierie de Cyberdéfense.” Source: RevenueBase Database · checked Sep 9, 2026
19	Straad.A	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	5 contacts →
	Indirect evidence “Membre de #NUMEUM et du #CyberCercle, STRAAD.A, structure de conseil et d'expertise en sécurité globale, se positionne comme un partenaire de l'anticipation et de la maitrise des…” Source: RevenueBase Database · checked Sep 9, 2026
20	Psswrd	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	4 contacts →
	Indirect evidence “Fondé et opérationnel depuis septembre 2023, PSSWRD est un cabinet de conseil pure-player en cybersécurité, réunissant des femmes et des hommes engagés autour de valeurs fortes …” Source: RevenueBase Database · checked Sep 9, 2026
21	Blockchains Experts	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	4 contacts →
	Indirect evidence “Blockchains Experts offers leading cybersecurity services for blockchain.” Source: RevenueBase Database · checked Sep 9, 2026
22	WELAN	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	4 contacts →
	Indirect evidence “WELAN est une société de conseil en cybersécurité qui accompagne les entreprises de toutes tailles désireuses de se protéger contre les menaces numériques croissantes.” Source: RevenueBase Database · checked Sep 9, 2026
23	Cysafe Consulting	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	4 contacts →
	Partial evidence “CySAFE Consulting est un cabinet de conseil spécialisé en cybersécurité et management des risques qui accompagne les grandes, comme les petites entreprises, ainsi que les…” Source: RevenueBase Database · checked Sep 9, 2026
24	Univoq Partners	Partial evidence	Paris, FranceHQ checked Sep 9, 2026	11-50	4 contacts →
	Partial evidence “Univoq Partners is a cybersecurity consulting firm designed to address the new challenges organizations face with a clear, committed, and effective approach.” Source: RevenueBase Database · checked Sep 9, 2026
25	MA Cyber	Indirect evidence	Paris, FranceHQ checked Sep 9, 2026	1-10	3 contacts →
	Indirect evidence “MA Cyber vous accompagne dans la sécurisation de votre système d'information.” Source: RevenueBase Database · checked Sep 9, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cryptography consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cryptography consulting firms.
Partial evidence: Its own public description names part of cryptography consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cryptography consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 80 cryptography consulting firms based in Paris, France

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Cryptography consulting firms based in Paris, France at a glance

As of Sep 9, 2026

34.8%Verified-email coverage

4.2%Mobile-number coverage

6.9Average contacts per company

1-10Median size (employees)

103.8%Largest-city concentration · Paris

Sep 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

1770–30

1531–60

061–90

090–180

0180+

Company record updated

Median 49.0d

00–30

31231–60

16261–90

4890–180

30180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cryptography consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Paris, France whose own description of what they do matches “cryptography consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cryptography consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cryptography consulting firms, and records with no verified work email. Companies headquartered outside Paris are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 192 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 9, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cryptography consulting firms by metro in France

Cryptography consulting firms in Paris83

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cryptography consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cryptography consulting firms are there based in Paris, France?

RevenueBase identified 80 cryptography consulting firms headquartered in Paris, France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Evabssi, headquartered in Paris, tops this list with the largest team on record.

Which city has the most cryptography consulting firms?

Paris leads with 83 headquartered companies, followed by Lyon (6) and Toulouse (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 192 verified decision-maker contacts tracked across these 80 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 9, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.