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Firsov alternatives & similar sites

Denis Firsov | Homepage — 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
petri.com ↗	70 match shared topic	Homepage - Petri IT Knowledgebase	United States~ en	technology-and-computing WordPress	robots llmsaihumans	emailphone	none
ioactive.com ↗	70 match shared topic	Homepage - IOActive	en	information-and-network-security WordPress	robots llmsaihumans	emailphone	none
geenius.ee ↗	28 match shared topic	Geenius – tehnoloogia ja innovatsioon igapäevaelus	Estonia et	technology-and-computing	robotsllmsaihumans	emailphone	none
tr.ee ↗	18 match shared topic	Free Link Shortener Tool - Custom Trusted Short Links by Linktree for Any URL	Estonia et	marketing-and-advertising	robotsllmsaihumans	emailphone	none
s.ee ↗	18 match shared topic	S.EE - URL Shortener, Link in Bio & File Sharing	Estonia et	technology-and-computing	robots llmsaihumans	emailphone	none
glazer.ee ↗	18 match shared topic	Data-Driven Intelligence Platform \| Glazer Technologies - Glazer Technologies	Estonia et	artificial-intelligence WordPress	robots llmsaihumans	emailphone	none
wpconsent.com ↗	55 match shared topic	WPConsent - Cookie Consent Management Plugin for WordPress	en	technology-and-computing WordPress WooCommerce	robots llmsaihumans	emailphone	none
sslshopper.com ↗	55 match shared topic	SSL Certificate Comparison and Reviews	en	technology-and-computing	robotsllmsaihumans	emailphone	partial · 8
thehackernews.com ↗	55 match shared topic	The Hacker News \| #1 Trusted Source for Cybersecurity News	en	information-and-network-security	robotsllmsaihumans	emailphone	none
bleepingcomputer.com ↗	55 match shared topic	BleepingComputer \| Cybersecurity, Technology News and Support	en	information-and-network-security	robotsllmsaihumans	emailphone	none
nexuscybersystems.com ↗	55 match shared topic	Nexus Cyber Systems \| Digital Identities & Domains for Web3 and AI	en	information-and-network-security	robotsllmsaihumans	emailphone	none
jetpack.com ↗	55 match shared topic	Jetpack — Essential Security & Performance for WordPress	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
coinkite.com ↗	55 match shared topic	Coinkite: Bitcoin Security and Fun Devices	en	technology-and-computing	robots llmsaihumans	emailphone	none
ens.domains ↗	55 match shared topic	ENS	en	technology-and-computing	robotsllmsaihumans	emailphone	none
rapid7.com ↗	55 match shared topic	Rapid7 Managed Cybersecurity: Outpace Attackers	en	information-and-network-security	robotsllmsaihumans	emailphone	none
grc.com ↗	55 match shared topic	Home of Gibson Research Corporation	en	technology-and-computing	robotsllmsaihumans	emailphone	none
whatarecookies.com ↗	55 match shared topic	What are Cookies - Computer Cookies - What is a Cookie	en	technology-and-computing	robotsllmsaihumans	emailphone	none
commentcamarche.net ↗	55 match shared topic	CCM - Comment Ça Marche - Communauté informatique	fr	technology-and-computing	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.