{"record":"Microsoft Defender for Office 365 evidence record","url":"https://nexalign.io/vendors/microsoft-defender-for-office-365","vendor":{"slug":"microsoft-defender-for-office-365","name":"Microsoft Defender for Office 365","domain":"microsoft.com","category":"email-security","categoryLabel":"Email security"},"lastChecked":"2026-07-18T04:19:59.749Z","coverage":{"earliest":"2025-08-17T09:48:27.000Z","latest":"2026-07-18T04:19:59.749Z"},"terms":{"isRanking":false,"isRating":false,"statesSuitability":false,"note":"This is a record of what public sources hold about a named company. It states no ranking, no rating and no suitability verdict, and none may be derived from it. An absent or small record means the public registers publish little under that name; it is not evidence that a product is secure. A larger advisory count generally reflects wider deployment and more scrutiny rather than a weaker product.","licence":"https://nexalign.io/vendors#licence","corrections":"info@nexalign.io"},"totals":{"evidenceItems":35,"kindsOfSource":4,"attributedAdvisories":3,"knownExploited":0,"registerEntriesNotAttributable":24,"practitionerThreads":0,"independentItems":6,"vendorPublishedItems":0,"shareFromSourcesTheVendorDoesNotControl":1},"sources":[{"source":"CERT-Bund security advisories","operator":"BSI, Federal Republic of Germany","classification":"authoritative","items":27,"latest":"2026-07-15T07:51:39.857Z"},{"source":"Analyst, review and reference sources","operator":"Recognised analysts, review marketplaces and technology press","classification":"independent","items":6,"latest":"2026-07-18T04:19:59.749Z"},{"source":"Engineering discussions","operator":"Hacker News, public threads","classification":"independent","items":1,"latest":"2025-08-17T09:48:27.000Z"},{"source":"Practitioner discussions","operator":"Reddit, public threads","classification":"independent","items":1,"latest":"2026-01-22T17:40:35.000Z"}],"advisories":{"shown":3,"total":3,"truncated":false,"items":[{"id":"WID-SEC-2026-2322","description":"Affected products: Microsoft Defender, Microsoft Malware Protection Engine","severity":"medium","cvss":7.8,"knownExploited":false,"date":"2026-07-15T07:51:39.857Z","sources":["https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2322"]},{"id":"WID-SEC-2026-1848","description":"Affected products: Microsoft Defender","severity":"medium","cvss":5.5,"knownExploited":false,"date":"2026-06-10T06:30:53.819Z","sources":["https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1848"]},{"id":"WID-SEC-2026-1603","description":"Affected products: Microsoft Defender, Microsoft Malware Protection Engine","severity":"high","cvss":8.1,"knownExploited":false,"date":"2026-05-21T07:35:34.658Z","sources":["https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1603"]}]},"practitionerThreads":{"shown":0,"total":0,"truncated":false,"items":[]},"independentCoverage":{"shown":5,"total":6,"truncated":true,"items":[{"title":"Microsoft Defender for Office 365 vs Mimecast Advanced Email Security (2026)","host":"peerspot.com","url":"https://www.peerspot.com/products/comparisons/microsoft-defender-for-office-365_vs_mimecast-advanced-email-security","date":null},{"title":"Microsoft Defender for Office 365 Reviews, Competitors and Pricing","host":"peerspot.com","url":"https://www.peerspot.com/products/microsoft-defender-for-office-365-reviews","date":null},{"title":"Microsoft Defender for Office 365 Reviews & Ratings 2026 | Gartner Peer Insights","host":"gartner.com","url":"https://www.gartner.com/reviews/market/email-security/vendor/microsoft/product/microsoft-defender-for-office-365","date":null},{"title":"What is your primary use case for Microsoft Defender for Office 365?","host":"peerspot.com","url":"https://www.peerspot.com/questions/what-is-your-primary-use-case-for-microsoft-defender-for-office-365","date":null},{"title":"Microsoft Defender for Office 365 Reviews & Ratings 2026 | Gartner Peer Insights","host":"gartner.com","url":"https://www.gartner.com/reviews/product/microsoft-defender-for-office-365","date":null}]},"vendorPublished":{"shown":0,"total":0,"truncated":false,"items":[]},"openQuestions":["A further 24 register entries mention Microsoft Defender for Office 365 without naming a product of Microsoft Defender for Office 365 as affected. They are excluded rather than counted as vulnerabilities.","No public practitioner discussion naming Microsoft Defender for Office 365 was found in the indexed threads. Operational experience with this product is not represented in this record.","Pricing, contract terms, notice periods and support commitments are not part of any public register. They come from the vendor and belong in a negotiation record.","Certification status such as ISO 27001, SOC 2 or BSI C5 has to be checked against the current certificate and its stated scope. A valid certificate can still exclude the product being bought."]}