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Defended alternatives & similar sites

defended. Open Source 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
opensourcesecurity.co.uk ↗	79 match 1 shared topics	Open Source Security	GB en	information-and-network-security	robotsllmsaihumans	emailphone	none
4csecurity.ai ↗	75 match 1 shared topics	4C Security \| Open Source XDR & SIEM	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
keepingdatasecure.co.uk ↗	71 match 1 shared topics	Cyber Security	GB en	information-and-network-security	robotsllmsaihumans	emailphone	none
chevronsecurity.co.uk ↗	71 match 1 shared topics	Chevron Security	GB en	information-and-network-security	robots llmsaihumans	emailphone	none
hapascrt.com ↗	71 match 1 shared topics	HAPA Security	en	information-and-network-security Sanity	robotsllmsaihumans	emailphone	none
absolvesecurity.com ↗	71 match 1 shared topics	Absolve Security - Home	en	information-and-network-security Weebly	robotsllmsaihumans	emailphone	none
avestim.com ↗	70 match 1 shared topics	Avestim - Cyber Security Services	en	information-and-network-security WordPress WooCommerce	robots llmsaihumans	emailphone	none
useshiftsecurity.com ↗	70 match 1 shared topics	Shift Security	en	information-and-network-security	robotsllmsaihumans	emailphone	none
7minsec.com ↗	70 match 1 shared topics	7 Minute Security	en	information-and-network-security WordPress	robotsllmsaihumans	email phone	none
7minutesecurity.com ↗	70 match 1 shared topics	7 Minute Security	en	information-and-network-security WordPress	robotsllmsaihumans	email phone	none
castielsecurity.com ↗	70 match 1 shared topics	Castiel Security	en	information-and-network-security	robotsllmsaihumans	emailphone	none
defendstrike.com ↗	70 match 1 shared topics	Defend Strike - Cyber Security Solutions	en	information-and-network-security Spree Commerce	robotsllmsaihumans	emailphone	none
cyber-ia.co.uk ↗	70 match 1 shared topics	Home- Cyber Security	GB en	information-and-network-security	robotsllmsaihumans	emailphone	full · 18
cyberdefendx.org ↗	70 match 1 shared topics	CyberDefendX \| Cybersecurity Services	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cintainfinita.com.ar ↗	70 match 1 shared topics	Cinta Infinita \| Information Security	AR en	information-and-network-security	robotsllmsaihumans	emailphone	none
auxin.io ↗	70 match 1 shared topics	Auxin Security - Auxin	en	information-and-network-security WordPress	robots llmsaihumans	emailphone	none
sansecurity.com ↗	70 match 1 shared topics	SAN Security	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cyberport.tools ↗	70 match 1 shared topics	CyberPort — Open-Source Defensive Cybersecurity Tools	en	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.