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Oc3 alternatives & similar sites

OC3 | Open Confidential Computing Conference 2026 — 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
cysec.io ↗	71 match 1 shared topics	CYSEC \| Confidential Computing & Satellite Cybersecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cysec.tech ↗	71 match 1 shared topics	CYSEC \| Confidential Computing & Satellite Cybersecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cysec.ai ↗	71 match 1 shared topics	CYSEC \| Confidential Computing & Satellite Cybersecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cysec-systems.swiss ↗	71 match 1 shared topics	CYSEC \| Confidential Computing & Satellite Cybersecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cysec-systems.info ↗	71 match 1 shared topics	CYSEC \| Confidential Computing & Satellite Cybersecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cysec.app ↗	71 match 1 shared topics	CYSEC \| Confidential Computing & Satellite Cybersecurity	en	information-and-network-security	robotsllmsaihumans	emailphone	none
0day.net ↗	71 match 1 shared topics	DEF CON® Hacking Conference Home	en	information-and-network-security	robotsllmsaihumans	emailphone	full · 20
defconhotline.com ↗	71 match 1 shared topics	DEF CON® Hacking Conference Home	en	information-and-network-security	robotsllmsaihumans	emailphone	none
defconkids.com ↗	71 match 1 shared topics	DEF CON® Hacking Conference Home	en	information-and-network-security	robotsllmsaihumans	emailphone	none
defconjack.com ↗	71 match 1 shared topics	DEF CON® Hacking Conference Home	en	information-and-network-security	robotsllmsaihumans	emailphone	full · 20
defcon-five.com ↗	71 match 1 shared topics	DEF CON® Hacking Conference Home	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cybersecurityconference.co.uk ↗	70 match 1 shared topics	Cyber Security Conference 2026	United Kingdom en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
csoconfidential.org ↗	68 match 1 shared topics	CSO Confidential	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
csoconfidential.net ↗	68 match 1 shared topics	CSO Confidential	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
cs5global.org ↗	68 match 1 shared topics	Home - CS5 East \| The Official Conference of The Cyber AB	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
cs5east.org ↗	68 match 1 shared topics	Home - CS5 East \| The Official Conference of The Cyber AB	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
cybersecuritycongress.org ↗	68 match 1 shared topics	AI, Cybersecurity Resilience Conference France 2026	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cascade-conference.org ↗	68 match 1 shared topics	CASCADE Conferences	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.