Updated monthly. Latest: November 2026

Domain blacklist status

How many of the domains we checked in the last 45 days were flagged, and which security vendors flagged them. Built from anonymised BrandsDefender check results.

Cite this data

704

Domains checked

15.3%

Flagged by at least one vendor

108

Domains flagged

101

Security vendors checked

Most common vendors

Share of all checked domains each vendor flagged, and its share of the flagged domains. A domain can be flagged by more than one vendor.

VendorFlaggedShare of checked domainsShare of flagged
Gridinsoft77
10.94%
71.3%
Yandex Safe Browsing44
6.25%
40.7%
alphaMountain.ai24
3.41%
22.2%
G-Data5
0.71%
4.6%
Bitdefender3
0.43%
2.8%
Sophos3
0.43%
2.8%
URLQuery3
0.43%
2.8%

Another 10 flags came from vendors that flagged fewer than 3 domains. They count towards the totals but are not listed.

Vendors per domain

How many vendors flagged each checked domain.

  • No vendor59684.7%
  • One vendor7210.2%
  • Two vendors233.3%
  • Three or more131.8%

Month by month

A new row is added on the first day of each month.

MonthCheckedFlaggedShare
November 202670410815.3%

Methodology

  • Covers every domain with a security vendor check in the 45 days before the report date, using the current status for each domain and vendor.
  • A domain counts as flagged when at least one of the 101 vendors checked currently flags it.
  • Vendors are listed only when they flagged at least 3 domains, so no single site can be identified.
  • The data is anonymised: no domain names, client details or case details are published.
  • The figures reflect domains people chose to check with us, which skews towards domains with a suspected problem. They are not a sample of the whole web.
  • Refreshed automatically on the first day of each month. This edition was generated on 2 November 2026.

Cite this data

You are welcome to use these figures in articles, reports and talks. Please credit BrandsDefender with a link to this page.

Citation

BrandsDefender (2026). Domain blacklist status, November 2026: share of checked domains flagged by security vendors. https://brandsdefender.com/research/domain-blacklist-status/

HTML link

<a href="https://brandsdefender.com/research/domain-blacklist-status/">Domain blacklist status, November 2026</a> by BrandsDefender

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