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stormdoor.dev
FINDING

domain.typosquat

The domain looks like a one- or two-character typo of a well-known brand domain.

SEVERITY
medium
LEADS TO
suspect
GATE
/v1/domains
CHECK
domain.typosquat
Jump to what to do

Also emitted by /v1/links (check link.destination_reputation, evaluated against the redirect chain’s final destination).

What it looks at#

The same restricted edit-distance algorithm as email.typo_domain, run against a curated list of about 32 well-known brand domains spanning payments and finance (paypal.com, stripe.com, banks, card networks), major platforms (google.com, facebook.com, linkedin.com), retail (amazon.com, ebay.com), big tech and infrastructure (apple.com, microsoft.com, github.com), and delivery/logistics (fedex.com, ups.com). Same tight bounds as the email version: an absolute cap of 2 edits and a relative cap of 20% of the target’s length.

Why it matters#

A domain one edit away from paypal.com or amazon.com is a classic impersonation pattern, used in phishing and fake-checkout scams — the near-identical string is meant to be misread at a glance.

What to do#

Medium severity — treat as worth a second look, especially in combination with a young registration age (domain.newly_registered) or a parked/no-content destination.

OTHER FINDING CODES FROM /V1/DOMAINS