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Jsec alternatives & similar sites

Jester Secure iT GmbH — 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
qberos.com ↗	65 match 2 shared topics	QBEROS - Cyber Security Solutions	de	information-and-network-security Weebly	robotsllmsaihumans	email phone	none
jo-soft.de ↗	64 match 2 shared topics	Start - Jo Soft IT-Security GmbH	Germany de	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
blackbox51.ch ↗	64 match 2 shared topics	Blackbox 51 GmbH – IT-Security & sichere IT-Infrastrukturen für KMUs	Switzerland de	information-and-network-security Spree Commerce	robotsllmsaihumans	emailphone	none
istplanbar.de ↗	63 match 2 shared topics	IST planbar GmbH	Germany de	information-and-network-security	robotsllmsaihumans	email phone	none
a-it-s.de ↗	63 match 2 shared topics	Startseite: SIZ GmbH	Germany de	information-and-network-security TYPO3	robotsllmsaihumans	emailphone	none
minedata.ch ↗	63 match 2 shared topics	MineData GmbH – Cybersecurity, Digitalisierung & FinOps	Switzerland de	information-and-network-security	robots llmsaihumans	email phone	partial · 4
kcyber.ch ↗	63 match 2 shared topics	Kahlke Cyber Systems \| IT-Security für KMU	Switzerland de	information-and-network-security	robotsllmsaihumans	emailphone	none
csb-it.net ↗	62 match 2 shared topics	Sicherheit und Effizienz in der IT \| CSB GmbH	de	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
csb-it.org ↗	62 match 2 shared topics	Sicherheit und Effizienz in der IT \| CSB GmbH	de	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
it-risikobewertung.de ↗	62 match 2 shared topics	IT-Sicherheit \| Adaptron GmbH	Germany de	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
certmobile.com ↗	62 match 2 shared topics	Certmobile GmbH \| Firmenslogan	de	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
it-security-champion.de ↗	62 match 2 shared topics	PORTFORMANCE: IT-Sicherheit & Managed Security Services	Germany de	information-and-network-security Webflow	robotsllmsaihumans	emailphone	none
isms-begleitung.de ↗	62 match 2 shared topics	Gray-Hat IT-Security Consulting Stephan H. Wenderlich	Germany de	information-and-network-security	robots llmsaihumans	emailphone	none
isms-richtlinien.de ↗	62 match 2 shared topics	Gray-Hat IT-Security Consulting Stephan H. Wenderlich	Germany de	information-and-network-security	robots llmsaihumans	emailphone	none
keepbit.de ↗	61 match 2 shared topics	keepbit IT-SOLUTIONS GmbH \| Ihr #1 IT-Sicherheitsexperte	Germany de	information-and-network-security Webflow	robotsllmsaihumans	emailphone	none
it-forensec.de ↗	61 match 2 shared topics	IT‑Security & IT‑Forensik für Unternehmen \| IT‑Forensec	Germany de	information-and-network-security Joomla	robotsllmsaihumans	email phone	none
it-scan.de ↗	61 match 2 shared topics	IT-Audit in Unternehmenssicherheit \| Mannheim \| IT-SCAN GmbH	Germany de	information-and-network-security	robots llmsaihumans	email phone	none
it-seecurity.de ↗	61 match 2 shared topics	IT-Seecurity - IT-Seecurity	Germany de	information-and-network-security WordPress	robotsllmsaihumans	email phone	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.