Company lists · Data refreshed September 2026

Top 15 Application security testing companies based in Sweden

RevenueBase identified 30 application security testing companies headquartered in Sweden as of September 2026 and tracks 395 professional contacts across them, including 207 with verified work emails. Stockholm is the largest hub.

This list covers application security testing companies headquartered in Sweden, 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 14, 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 14, 2026 86% judged on-target in blind review
30Companies
395Contacts tracked
207Verified emails
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The 15 largest application security testing companies based in Sweden

Ranked by team size
Top 15 of 30 application security testing companies based in Sweden, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to application security testing companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceStockholm, SwedenHQ checked Sep 14, 202651-20097 contacts →

Strong evidence

“Founded by a group of hackers in 2013, Stockholm-based Detectify is an application security platform trusted by over 2,100 organizations globally, from high-growth startups to the…”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceGothenburg, SwedenHQ checked Sep 14, 202611-5014 contacts →

Indirect evidence

“Assureds konsulter är ledande utförare av offensiva cybersäkerhetstjänster och experter inom teknisk IT-säkerhet, som erbjuder penetrationstester, säkerhetsbedömningar och…”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceStockholm, SwedenHQ checked Sep 14, 202611-5014 contacts →

Indirect evidence

“Sourcecom är din strategiska partner i säkerhetsfrågor och erbjuder specialiserade informationssäkerhetstjänster inom allt från riskhantering, revisioner och rådgivning till…”

Source: RevenueBase Database · checked Sep 14, 2026
4Partial evidenceStockholm, SwedenHQ checked Sep 14, 202611-5014 contacts →

Partial evidence

“Nordic Defender is the first crowdsourced cybersecurity platform in the Nordic region, offering specialized offensive security solutions.”

Source: RevenueBase Database · checked Sep 14, 2026
5Partial evidenceÖstermalm, SwedenHQ checked Sep 14, 202611-5012 contacts →

Partial evidence

“Venor was founded with the idea of providing companies, institutions, and organizations with high-quality services within the defensive IT security area.”

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceSwedenHQ checked Sep 14, 202651-2008 contacts →

Partial evidence

“For more than 10 years, Netsecurity has offered expertise, solutions and innovative services in IT security on the Norwegian market.”

Source: RevenueBase Database · checked Sep 14, 2026
7Indirect evidenceGöteborg, SwedenHQ checked Sep 14, 20261-106 contacts →

Indirect evidence

“Actalos hjälper företag att minska cyberrisk och bygga en säker digital närvaro.”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceStockholm, SwedenHQ checked Sep 14, 20261-106 contacts →

Partial evidence

“Gold Security is a successful and independent IT-security company that offers solutions to complex problems to companies where IT-security is a critical part of their business…”

Source: RevenueBase Database · checked Sep 14, 2026
9Partial evidenceStockholm, SwedenHQ checked Sep 14, 20261-104 contacts →

Partial evidence

“Cyloq is a cybersecurity company offering a range of security services tailored for businesses.”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceMalmö, SwedenHQ checked Sep 14, 20261-103 contacts →

Partial evidence

“Shelltrail is a cutting-edge offensive IT-security firm that prides itself on detailed assessments and top-notch customer satisfaction.”

Source: RevenueBase Database · checked Sep 14, 2026
11Partial evidenceGothenburg, SwedenHQ checked Sep 14, 20261-102 contacts →

Partial evidence

“At SK Security, we are passionate about IT-Security and have dedicated our careers to elevating security standards for our customers through penetration tests.”

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceKarlskoga, SwedenHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Med vårt huvudkontor i det vackra Karlskoga är vi stolta över att betjäna kunder över hela landet.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceStockholm, SwedenHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“DarkCell AB was established in 2020 in Stockholm, Sweden.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceLorensberg, SwedenHQ checked Sep 14, 20261-101 contacts →

Indirect evidence

“0x4A was founded by Jesper Larsson and is a result of his lifelong curiosity for complexity.”

Source: RevenueBase Database · checked Sep 14, 2026
15Partial evidenceFunäsdalen, SwedenHQ checked Sep 14, 20261-101 contacts →

Partial evidence

“Triop AB is a company specializing in advanced computer security and devops.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 15 of 30 application security testing companies based in Sweden

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Application security testing companies based in Sweden at a glance

As of Sep 14, 2026
52.4%Verified-email coverage
13.2Average contacts per company
1-10Median size (employees)
46.7%Largest-city concentration · Stockholm
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
5
51-200
2
201-500
1

Email recency for this list is measured worldwide rather than for Sweden, so it is reported there. Company counts and contact totals on this page are exact for Sweden, over 30 companies.

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 application security testing companies, 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 Sweden whose own description of what they do matches “application security testing companies”. 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 application security testing companies), 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 application security testing companies, and records with no verified work email. Companies headquartered outside Sweden 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, 207 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 14, 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.

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 application security testing companies, 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 application security testing companies are there based in Sweden?

RevenueBase identified 30 application security testing companies headquartered in Sweden 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?

Detectify, headquartered in Stockholm, tops this list with the largest team on record.

Which city has the most application security testing companies?

Stockholm leads with 14 headquartered companies, followed by Molndal (2) and Funasdalen (1).

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 207 verified decision-maker contacts tracked across these 30 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 14, 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.