Greyphish is a real-time domain threat intelligence platform. It continuously watches newly registered and newly issued domains across the internet, and alerts you the moment something suspicious appears near your brand — before attackers have a chance to weaponize it.
Large organisations in finance, healthcare, e-commerce, and SaaS are among the most impersonated targets on the internet. Attackers register lookalike domains to run credential harvesting campaigns, redirect customers to fake login pages, or impersonate executives in wire fraud schemes.
Greyphish monitors domain registrations at scale so your security team sees suspicious lookalikes the moment they appear — giving you time to act before a phishing campaign goes live.
If your name, domain, or handle is your identity — as a consultant, creator, or public figure — a convincing lookalike can deceive your audience or clients without you ever knowing it existed.
Greyphish watches for permutations of your domain and keywords so you are never the last to know when someone tries to impersonate you online.
SOC analysts, MSSPs, and threat researchers need continuous brand coverage across dozens of clients and brands — without building and maintaining their own monitoring pipeline.
Greyphish provides a live feed of suspicious domains with enriched context, real-time watchlist alerting, and export formats ready for blocklists and SIEM ingestion. Pro subscribers get full API access for integration into existing workflows.
Greyphish monitors domain activity in real time across the internet. Every domain that surfaces is run through permutation analysis — covering the attack patterns that adversaries actually use: character transpositions, vowel swaps, homoglyph substitutions (replacing letters with visually identical Unicode characters), hyphenation tricks, combosquatting, and TLD variations.
Each candidate is compared against a library of monitored brands. Matches are surfaced immediately with threat classification and confidence scoring, so you can triage fast and act before damage is done.