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Qa Sec alternatives & similar sites

Quantum Security — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Information And Network Security →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
lutrasecurity.com ↗	74 match 1 shared topics	Lutra Security	de	information-and-network-security	robotsllmsaihumans	email phone	none
porxy.de ↗	71 match 1 shared topics	Inside Security GmbH	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
openxpki.com ↗	71 match 1 shared topics	WhiteRabbit Security	de	information-and-network-security Joomla	robotsllmsaihumans	email phone	none
positronix.de ↗	69 match 1 shared topics	PositroniX Cyber Security	Germany de	information-and-network-security Weebly	robotsllmsaihumans	emailphone	none
cybrdf.com ↗	69 match 1 shared topics	Cyber Security Services	de	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
sap-security-forum.com ↗	69 match 1 shared topics	SAP Security Forum 2013	de	information-and-network-security	robotsllmsaihumans	emailphone	none
psecscanner.de ↗	69 match 1 shared topics	Phoenix PHP Security Scanner	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
aidnt.com.br ↗	68 match 1 shared topics	AID-NETWORK-SECURITY	Brazil de	information-and-network-security	robotsllmsaihumans	emailphone	none
purple22.de ↗	68 match 1 shared topics	purple22 Information Security	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
cybersecurity-austria.info ↗	68 match 1 shared topics	Cyber Security News Austria	de	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
redminescanner.de ↗	68 match 1 shared topics	Redmine Security Scanner von Planio	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
rickassmann.de ↗	68 match 1 shared topics	Rick Grassmann \| IT security	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
dwp-secruity.de ↗	68 match 1 shared topics	DWP Solution & Security GmbH	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
infosec-x.com ↗	68 match 1 shared topics	Information Security Experts - Home	de	information-and-network-security WordPress	robotsllmsaihumans	email phone	none
quantumoptics-jena.de ↗	67 match 1 shared topics	Startseite - Quantum Optics Jena	Germany de	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
qo-jena.de ↗	67 match 1 shared topics	Startseite - Quantum Optics Jena	Germany de	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
rainer-baeder.de ↗	67 match 1 shared topics	Rainer Baeder - Security - Home	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none
rechtsanwalt-engels.de ↗	67 match 1 shared topics	marc heuse :: it-security	Germany de	information-and-network-security	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.