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Day 0 Security - Serious 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
4foxsec.com ↗	75 match 1 shared topics	4FOX Security - Expert Cyber Security Services	en	information-and-network-security	robotsllmsaihumans	emailphone	none
bstsecurity.com ↗	75 match 1 shared topics	BST Security - Home	en	information-and-network-security	robotsllmsaihumans	emailphone	none
purplehatsecurity.co.uk ↗	75 match 1 shared topics	Purple Hat Security - Cybersecurity Solutions	United Kingdom en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
a7security.io ↗	74 match 1 shared topics	A7 Security \| Enhance Your Security	en	information-and-network-security Squarespace Magento	robotsllmsaihumans	emailphone	none
darklinelabs.com ↗	74 match 1 shared topics	DarkLine Security - Elite Cybersecurity Penetration Testing	en	information-and-network-security	robotsllmsaihumans	emailphone	none
heliosec.io ↗	74 match 1 shared topics	Helios Security \| Managed Security Services & Assessments	en	information-and-network-security	robotsllmsaihumans	emailphone	none
farsecurity.com ↗	74 match 1 shared topics	FAR Security \| Offensive Security Assessments	en	information-and-network-security	robotsllmsaihumans	emailphone	none
3bdatasecurity.com ↗	74 match 1 shared topics	Cyber Security Solutions \| 3B Data Security	en	information-and-network-security	robotsllmsaihumans	email phone	none
3bdatasecurity.co.uk ↗	74 match 1 shared topics	Cyber Security Solutions \| 3B Data Security	United Kingdom en	information-and-network-security	robotsllmsaihumans	email phone	none
cambridgecybersecurity.co.uk ↗	74 match 1 shared topics	Cambridge Cyber Security - Expert Cyber Security Services	United Kingdom en	information-and-network-security	robots llmsaihumans	emailphone	none
onelock.com ↗	73 match 1 shared topics	OneLock - Security Consulting And Testing Services	en	information-and-network-security	robotsllmsaihumans	emailphone	none
spotlightsecurity.ai ↗	73 match 1 shared topics	Spotlight Security - Spotlight Security	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
bitcybersecurity.co.uk ↗	73 match 1 shared topics	Cyber Security - BIT Security	United Kingdom en	information-and-network-security	robotsllmsaihumans	emailphone	none
srssec.com ↗	73 match 1 shared topics	SrsSec - Serious Security for the Digital Age	en	information-and-network-security	robotsllmsaihumans	emailphone	none
7a-security.shop ↗	73 match 1 shared topics	7ASecurity: Penetration Testing for Serious Teams \| 7ASecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
7a-security.store ↗	73 match 1 shared topics	7ASecurity: Penetration Testing for Serious Teams \| 7ASecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
7asec.com ↗	73 match 1 shared topics	7ASecurity: Penetration Testing for Serious Teams \| 7ASecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
7asecure.com ↗	73 match 1 shared topics	7ASecurity: Penetration Testing for Serious Teams \| 7ASecurity	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.