M365 Defender

Listed in the vendor table for Client-side protection. Not named in any of the 84 answers those categories produced in the October 2026 Edition: fourteen models, six prompts per category and segment, every question asked three times, on behalf of a small B2B company, a mid-market B2B company and an enterprise B2B company, with every standing computed within one segment.

Standing

Not named in 84 answers

Absence in a measured set of answers is a finding, not a verdict: it says the models did not reach for M365 Defender when asked these questions this month. The products they named instead are listed by category below.

By buyer segment

The same categories asked on behalf of a different buyer. Each share and rank is computed within its segment; the columns sit side by side and are never added together.

Category	Small business	Mid-market	Enterprise
Client-side protection	0% · 107 of 144 1 label	not named	not named

Where it was not named

Each category M365 Defender belongs to, the answers collected there, and who the models named first instead.

Category	Function	Named in	Named instead, first-choice share
Client-side protection	Security operations	0 of 84	cside 13% · Reflectiz 11% · Cloudflare Client-Side Security 7%

Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when M365 Defender's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as M365 Defender, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

What a new claim receivesHide what a new claim receives

A new claim receives the current edition's vendor brief for M365 Defender by email, built from the raw record of the edition. It shows:

where M365 Defender is named, by buyer and by framing, and which cells hold its first choices;
the claims the models make when they name it, ranked, with the strongest and the weakest quoted;
its vocabulary against the segment leader's, and the pages the models cited;
who was chosen in the answers that did not name M365 Defender, and every reason the record gives;
a battlecard for each top rival: the head-to-head split, why they win, and the reservation quoted against them;
one page of published figures cleared to show a buyer.