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Defcon alternatives & similar sites

DEF CON® Hacking Conference Home — 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
0day.net ↗	95 match 1 shared topics	DEF CON® Hacking Conference Home	en	information-and-network-security	robotsllmsaihumans	emailphone	full · 20
brucon.org ↗	69 match 1 shared topics	BruCON \| Security and hacker conference and training	en	information-and-network-security Wix	robots llmsaihumans	emailphone	none
cs5global.org ↗	69 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 ↗	69 match 1 shared topics	Home - CS5 East \| The Official Conference of The Cyber AB	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
blueteamconference.net ↗	69 match 1 shared topics	Blue Team Con - An infosec conference for defenders.	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
blueteamcon.info ↗	69 match 1 shared topics	Blue Team Con - An infosec conference for defenders.	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
blueteamcon.net ↗	69 match 1 shared topics	Blue Team Con - An infosec conference for defenders.	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
blueteamcon.org ↗	69 match 1 shared topics	Blue Team Con - An infosec conference for defenders.	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
blueteamconference.org ↗	69 match 1 shared topics	Blue Team Con - An infosec conference for defenders.	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
breakpointsec.com ↗	68 match 1 shared topics	Breakpoint 2012 Security Conference	en	information-and-network-security SilverStripe	robotsllmsaihumans	emailphone	none
thehackbat.com ↗	67 match 1 shared topics	theHackbat - Open-source hacking tools	en	information-and-network-security	robotsllmsaihumans	emailphone	none
medsecmeeting.org ↗	67 match 1 shared topics	MEDSec: A Medical Device Cybersecurity Conference	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
boardwalkbytes.org ↗	67 match 1 shared topics	Cyber Security Summit - Premier Information Security Conference	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
csctconference.com ↗	67 match 1 shared topics	International Conference on Cyberspace Security and Communication Technology (CSCT 2025)	en	information-and-network-security	robotsllmsaihumans	emailphone	none
pwn2own.net ↗	66 match 1 shared topics	Pwn2Own Hacking Competition 2025 Review \| Trend Micro (US)	en	information-and-network-security Adobe Experience Manager	robotsllmsaihumans	emailphone	none
pwn2own.com ↗	66 match 1 shared topics	Pwn2Own Hacking Competition 2025 Review \| Trend Micro (US)	en	information-and-network-security Adobe Experience Manager	robotsllmsaihumans	emailphone	none
breachlabs.ai ↗	66 match 1 shared topics	BreachLabs — Ethical Hacking for Nordic Tech	en	information-and-network-security	robotsllmsaihumans	emailphone	none
0xffsec.com ↗	66 match 1 shared topics	0xffsec \| Full stack hacking.	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.