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Operating System Security (OSS) – A system security course @ PurdueCS — 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
skripting.com ↗	72 match 1 shared topics	Skripting – Scripting, Systems and Security crap	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
asvalis.com ↗	70 match 1 shared topics	Asvalis – Security Services – Freelance Security Services	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
dostalsecurity.com ↗	70 match 1 shared topics	Dostal Security – Enterprise Grade Security for Everyone.	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
ion-security.com ↗	69 match 1 shared topics	ion-security - ion-security Home Page	en	information-and-network-security Weebly	robotsllmsaihumans	emailphone	none
0xeb-bp.com ↗	69 match 1 shared topics	0xeb_bp \| a security blog	en	information-and-network-security	robotsllmsaihumans	emailphone	none
ernw.net ↗	69 match 1 shared topics	ERNW - providing security. \| ERNW - providing security.	en	information-and-network-security	robotsllmsaihumans	emailphone	none
ernw-insight.net ↗	69 match 1 shared topics	ERNW - providing security. \| ERNW - providing security.	en	information-and-network-security	robotsllmsaihumans	emailphone	none
ernw-sectools.net ↗	69 match 1 shared topics	ERNW - providing security. \| ERNW - providing security.	en	information-and-network-security	robotsllmsaihumans	emailphone	none
ernw-insight.com ↗	69 match 1 shared topics	ERNW - providing security. \| ERNW - providing security.	en	information-and-network-security	robotsllmsaihumans	emailphone	none
astralsecurity.io ↗	69 match 1 shared topics	Astral Security — The Modern Security Operations Platform	en	information-and-network-security	robotsllmsaihumans	emailphone	none
pugsec.com ↗	69 match 1 shared topics	Pug Security - Pug Security	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cm-alliance.com ↗	69 match 1 shared topics	Cyber Security Training and Cybersecurity Consulting UK	en	information-and-network-security HubSpot	robotsllmsaihumans	emailphone	none
vunetrix.com ↗	69 match 1 shared topics	Vunetrix \| Security System Monitoring Tool \| Cyber Security Tools	en	information-and-network-security WordPress	robotsllmsaihumans	email phone	none
gednetsecurity.com ↗	68 match 1 shared topics	GedNet Security \| Cybersecurity Consulting & Risk Protection	en	information-and-network-security	robotsllmsaihumans	emailphone	none
pumbacybersec.com ↗	68 match 1 shared topics	Pumba Cyber Security – Cyber Security Consulting	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
4foxsec.com ↗	68 match 1 shared topics	4FOX Security - Expert Cyber Security Services	en	information-and-network-security	robotsllmsaihumans	emailphone	none
into-security.com ↗	68 match 1 shared topics	Cybersecurity matters – Into Security	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
wagnercyber.com ↗	68 match 1 shared topics	Wagner Cybersecurity LLC \| Expert Cybersecurity Consulting	en	information-and-network-security Spree Commerce	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.