Company lists · Data refreshed September 2026

Top 25 Cybersecurity contractors based in Singapore

Name: Cybersecurity contractors based in Singapore
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 250 companies tracked

RevenueBase identified 250 cybersecurity contractors headquartered in Singapore as of September 2026 and tracks 5,489 professional contacts across them, including 1,733 with verified work emails. Singapore is the largest hub.

This list covers cybersecurity contractors headquartered in Singapore, 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 21, 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 21, 2026 86% judged on-target in blind review

250Companies

5,489Contacts tracked

1,733Verified emails

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The 25 largest cybersecurity contractors based in Singapore

Ranked by team size

Top 25 of 250 cybersecurity contractors based in Singapore, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity contractors: 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	Ensign Infosecurity	Partial evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	888 contacts →
	Partial evidence “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Source: RevenueBase Database · checked Sep 21, 2026
2	Group-Ib	Partial evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	528 contacts →
	Partial evidence “Founded in 2003 and headquartered in Singapore, Group-IB is a leading creator of cybersecurity technologies to investigate, prevent, and fight digital crime.” Source: RevenueBase Database · checked Sep 21, 2026
3	PCSS	Indirect evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	387 contacts →
	Indirect evidence “PCSS is a Singapore-based systems integrator with more than 25 years of experience and accolades in providing secure, reliable and state-of-the-art security solutions.” Source: RevenueBase Database · checked Sep 21, 2026
4	Adventus	Partial evidence	SingaporeHQ checked Sep 21, 2026	201-500	279 contacts →
	Partial evidence “Leader in ICT & Cybersecurity Solutions & Services Adventus is a premier provider of Information and Communications Technology (ICT) and Cybersecurity solutions and services that…” Source: RevenueBase Database · checked Sep 21, 2026
5	Eventus Security	Partial evidence	SingaporeHQ checked Sep 21, 2026	201-500	249 contacts →
	Partial evidence “Eventus Security is a globally trusted Managed Security Services Provider (MSSP), delivering AI-driven, intelligence-led cybersecurity services to organizations across Asia…” Source: RevenueBase Database · checked Sep 21, 2026
6	Assurity Trusted Solutions PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	201-500	209 contacts →
	Indirect evidence “Assurity Trusted Solutions (ATS) is a wholly owned subsidiary of the Government Technology Agency (GovTech).” Source: RevenueBase Database · checked Sep 21, 2026
7	Trend Micro Amea	Indirect evidence	SingaporeHQ checked Sep 21, 2026	5,001-10,000	150 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
8	Exclusive Networks Asia	Partial evidence	Kallang, SingaporeHQ checked Sep 21, 2026	501-1,000	134 contacts →
	Partial evidence “Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Cyberteq	Partial evidence	Bishan, SingaporeHQ checked Sep 21, 2026	51-200	128 contacts →
	Partial evidence “CYBERTEQ is a Cybersecurity technology company with a clear mission to create value for clients by driving Digital and Cyber resilience.” Source: RevenueBase Database · checked Sep 21, 2026
10	Aetosky	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	112 contacts →
	Indirect evidence “Aetosky builds AI-enabled platforms that help governments and public sector institutions make better decisions, faster.” Source: RevenueBase Database · checked Sep 21, 2026
11	Pico Guards	Indirect evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	88 contacts →
	Indirect evidence “One of Singapore's largest physical security company focusing on security consulting, manpower and technology - harnessing these expertise to customize the appropriate physical…” Source: RevenueBase Database · checked Sep 21, 2026
12	Positka	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	67 contacts →
	Indirect evidence “Positka is dedicated to building a business that delivers value to customers by combining the strategic rigor and intellectual focus of high-end management consulting with the…” Source: RevenueBase Database · checked Sep 21, 2026
13	Threatbook	Indirect evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	54 contacts →
	Indirect evidence “ThreatBook combines AI with deep threat intelligence to defend enterprises across the security lifecycle: precise threat detection, automated triage and response, and risk…” Source: RevenueBase Database · checked Sep 21, 2026
14	Hexadius Consulting	Partial evidence	SingaporeHQ checked Sep 21, 2026	51-200	45 contacts →
	Partial evidence “Hexadius provides niche cybersecurity services in the areas of IAM, SAP security/ GRC, VAPT and GRC.” Source: RevenueBase Database · checked Sep 21, 2026
15	Theos Cyber	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	41 contacts →
	Indirect evidence “THEOS Cyber: Your Trusted Partner in APAC At THEOS Cyber, we are passionate about safeguarding your digital assets from online threats.” Source: RevenueBase Database · checked Sep 21, 2026
16	3si PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	40 contacts →
	Indirect evidence “3Si is a leading Systems Integrator providing end-to-end Security solutions and technologies to organizations operating in complex and mission critical environments.” Source: RevenueBase Database · checked Sep 21, 2026
17	Cybersafe	Partial evidence	SingaporeHQ checked Sep 21, 2026	11-50	39 contacts →
	Partial evidence “Cybersecurity isn't only for the big boys anymore.” Source: RevenueBase Database · checked Sep 21, 2026
18	Dacta Global	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	38 contacts →
	Indirect evidence “DACTA was established with the aim of simplifying the perception of complexity surrounding digital security challenges and solutions.” Source: RevenueBase Database · checked Sep 21, 2026
19	Uniforce Security Services PTE LTD	Indirect evidence	#07-24, SingaporeHQ checked Sep 21, 2026	201-500	38 contacts →
	Indirect evidence “Uniforce Security Services Pte Ltd is backed up with combined 30 years of experience, specializing in a whole range of professional security services.” Source: RevenueBase Database · checked Sep 21, 2026
20	TSI Tech	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	35 contacts →
	Indirect evidence “TSI is a leading solution provider for intelligent security solutions and mission-critical information systems.” Source: RevenueBase Database · checked Sep 21, 2026
21	Insidersecurity	Partial evidence	SingaporeHQ checked Sep 21, 2026	11-50	34 contacts →
	Partial evidence “At InsiderSecurity, we simplify cybersecurity with AI and automation.” Source: RevenueBase Database · checked Sep 21, 2026
22	Horangi Cyber Security	Partial evidence	SingaporeHQ checked Sep 21, 2026	51-200	33 contacts →
	Partial evidence “At Horangi, we’re passionate about building a safer cyberspace and creating software that solves challenging cybersecurity problems.” Source: RevenueBase Database · checked Sep 21, 2026
23	Prospect Protection PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	32 contacts →
	Indirect evidence “Prospect Protection is licensed by the Singapore Police Force to carry out security outsourcing and investigation services.” Source: RevenueBase Database · checked Sep 21, 2026
24	Inventivo PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	29 contacts →
	Indirect evidence “Our Journey Inventivo was established in 2015 by 2 passionate Engineers that believe in providing services to the partner community.” Source: RevenueBase Database · checked Sep 21, 2026
25	Vcyberiz	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Quantified Risk, Fortified Resilience.” Source: RevenueBase Database · checked Sep 21, 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: cybersecurity contractors. 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 cybersecurity contractors.
Partial evidence: Its own public description names part of cybersecurity contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity contractors. 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 250 cybersecurity contractors based in Singapore

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Cybersecurity contractors based in Singapore at a glance

As of Sep 21, 2026

31.6%Verified-email coverage

22.0Average contacts per company

11-50Median size (employees)

88.8%Largest-city concentration · Singapore

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

110

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Singapore, so it is reported there. Company counts and contact totals on this page are exact for Singapore, over 250 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 cybersecurity contractors, 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 Singapore whose own description of what they do matches “cybersecurity contractors”. 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 cybersecurity contractors), 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 cybersecurity contractors, and records with no verified work email. Companies headquartered outside Singapore 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, 1,733 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 21, 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.

Cybersecurity contractors by metro

Cybersecurity contractors in Singapore222

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 cybersecurity contractors, 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 cybersecurity contractors are there based in Singapore?

RevenueBase identified 250 cybersecurity contractors headquartered in Singapore 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?

Ensign Infosecurity, headquartered in Singapore, tops this list with the largest team on record.

Which city has the most cybersecurity contractors?

Singapore leads with 222 headquartered companies, followed by Downtown Core (3) and Csc (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 1,733 verified decision-maker contacts tracked across these 250 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 21, 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.