check before: 2022-05-27
Product:
Defender, Defender for Office 365, Exchange, Microsoft 365 Defender, Microsoft 365 suite, Microsoft Defender for Office 365
Platform:
Germany, Online, US Instances, Web, World tenant
Status:
Launched
Change type:
Admin impact, Feature update, Updated message
Links:
Details:
Updated July 05, 2022: We have updated the rollout timeline below and provided additional details. Thank you for your patience.
In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell.
Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default.
After rollout, this new expanded list along with the default selection will automatically apply to:
Any new anti-malware policies that you create
The default anti-malware policy: The current list of the selection will be retained and appended with the new file types being added as part of default selection. As a result, the list of file selections in the default policy will be expanded while retaining all of the existing selection. There will be no changes to any of the other settings (like zap, admin notification configuration etc). The only change which will happen to the default policy is the expansion of the selection.
The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below).
This message is associated with Microsoft 365 Roadmap ID 85611
[When this will happen:]
Starting mid-July (previously early July) and completion of deployment by mid-August (previously late July)
Change Category:
XXXXXXX ...
Scope:
XXXXXXX ...
Release Phase:
General Availability
Created:
2022-05-13
updated:
2022-08-27
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changes*
Date | Property | old | new |
2022-09-15 | MC prepare | Review existing anti-malware policies and add the recommended file types to the block list. Since the default policy will now cover more file types, it’s likely that the expanded list of files in the default policy will block messages. If you do not want the new list of file types to be active, create a custom anti-malware policy (soon, before this feature deployment) with the file types that meet your needs. Review the following resources below to learn more:
Anti-malware policy Anti-malware policy protection FAQ Current list of file types in pre-populated list Current list of default file type selection The list of file types: 7z, 7zip, a, accdb, accde,ace, action, ade, adp, apk, app, appx, appxbundle, arj, asf, asp, aspx, ani, avi, bat, bin, bundle, bz, bz2, bzip2, cab, caction, cer, chm, cmd, com, command, cpl, crt, csh, css, deb, der, dex, dgz, dll, dmg, doc, docm, docx, dot, dotm, dtox, dylib, elf, exe, font, gz, gzip, hlp, hta, htm, html, img, imp, inf, ins, ipa, iso, isp, its, jar, jnlp, js, jse, kext, ksh, lha, lib, library, lnk, lqy, lzh, macho, mad, maf, mag, mam, maq, mar, mas, mat, mav, maw, mda, mdb, mde, mdt, mdw, mdz, mht, mhtml, msc, mscompress, msh, msh1, msh1xml, msh2, msh2xml, mshxml, msi, msix, msixbundle, msp, mst, o, obj, odp, ods, odt, one, onenote, ops, package, pages, pbix, pdb, pdf, php, pif, pkg, plugin, ppa, ppam, pps, ppsm, ppsx, ppt, pptm, pptx, prf, prg, ps1, ps1xml, ps2, ps2xml, psc1, psc2, pst, pub, py, rar, reg, rev, rpm, rtf, scf, scpt, scr, sct, service, sh, shx, shb, shtm, so, sys, tar, tarz, terminal, tgz, tool, uif, url, vb, vbe, vbs, vhd, vsd, vsdm, vsdx, vsmacros, vss, vssx, vst, vstm, vstx, vsw, vxd, workflow, ws, wsc, wsf, wsh, xhtml, xla, xlam, xll, xls, xlsb, xlsm, xlsx, xlt, xltm, xltx, xz, z, zi, zip, zipx, The default selection from the above file type list is: ace, apk, app, appx, ani, arj, bat, cab, cmd,com, deb, dex, dll, docm, elf, exe, hta, img, iso, jar, jnlp, kext, lha, lib, library, lnk, lzh macho, msc, msi, msix, msp, mst pif, ppa, ppam, reg, rev, scf, scr, sct, sys, uif, vb, vbe, vbs, vxd wsc, wsf, wsh xll, xz z ps://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection#anti-malware-polici ps://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection-faq-eop?view=o365-world ps://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=856 | Review existing anti-malware policies and add the recommended file types to the block list. Since the default policy will now cover more file types, it’s likely that the expanded list of files in the default policy will block messages. If you do not want the new list of file types to be active, create a custom anti-malware policy (soon, before this feature deployment) with the file types that meet your needs. Review the following resources below to learn more:
Anti-malware policy Anti-malware policy protection FAQ Current list of file types in pre-populated list Current list of default file type selection The list of file types: 7z, 7zip, a, accdb, accde,ace, action, ade, adp, apk, app, appx, appxbundle, arj, asf, asp, aspx, ani, avi, bat, bin, bundle, bz, bz2, bzip2, cab, caction, cer, chm, cmd, com, command, cpl, crt, csh, css, deb, der, dex, dgz, dll, dmg, doc, docm, docx, dot, dotm, dtox, dylib, elf, exe, font, gz, gzip, hlp, hta, htm, html, img, imp, inf, ins, ipa, iso, isp, its, jar, jnlp, js, jse, kext, ksh, lha, lib, library, lnk, lqy, lzh, macho, mad, maf, mag, mam, maq, mar, mas, mat, mav, maw, mda, mdb, mde, mdt, mdw, mdz, mht, mhtml, msc, mscompress, msh, msh1, msh1xml, msh2, msh2xml, mshxml, msi, msix, msixbundle, msp, mst, o, obj, odp, ods, odt, one, onenote, ops, package, pages, pbix, pdb, pdf, php, pif, pkg, plugin, ppa, ppam, pps, ppsm, ppsx, ppt, pptm, pptx, prf, prg, ps1, ps1xml, ps2, ps2xml, psc1, psc2, pst, pub, py, rar, reg, rev, rpm, rtf, scf, scpt, scr, sct, service, sh, shx, shb, shtm, so, sys, tar, tarz, terminal, tgz, tool, uif, url, vb, vbe, vbs, vhd, vsd, vsdm, vsdx, vsmacros, vss, vssx, vst, vstm, vstx, vsw, vxd, workflow, ws, wsc, wsf, wsh, xhtml, xla, xlam, xll, xls, xlsb, xlsm, xlsx, xlt, xltm, xltx, xz, z, zi, zip, zipx, The default selection from the above file type list is: ace, apk, app, appx, ani, arj, bat, cab, cmd,com, deb, dex, dll, docm, elf, exe, hta, img, iso, jar, jnlp, kext, lha, lib, library, lnk, lzh macho, msc, msi, msix, msp, mst pif, ppa, ppam, reg, rev, scf, scr, sct, sys, uif, vb, vbe, vbs, vxd wsc, wsf, wsh xll, xz z https://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection#anti-malware-policies https://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection-faq-eop?view=o365-worldwide https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=85611 |
2022-08-27 | MC prepare | Review existing anti-malware policies and add the recommended file types to the block list. Since the default policy will now cover more file types, it’s likely that the expanded list of files in the default policy will block messages. If you do not want the new list of file types to be active, create a custom anti-malware policy (soon, before this feature deployment) with the file types that meet your needs. Review the following resources below to learn more:
Anti-malware policy Anti-malware policy protection FAQ Current list of file types in pre-populated list Current list of default file type selection The list of file types: 7z, 7zip, a, accdb, accde,ace, action, ade, adp, apk, app, appx, appxbundle, arj, asf, asp, aspx, ani, avi, bat, bin, bundle, bz, bz2, bzip2, cab, caction, cer, chm, cmd, com, command, cpl, crt, csh, css, deb, der, dex, dgz, dll, dmg, doc, docm, docx, dot, dotm, dtox, dylib, elf, exe, font, gz, gzip, hlp, hta, htm, html, img, imp, inf, ins, ipa, iso, isp, its, jar, jnlp, js, jse, kext, ksh, lha, lib, library, lnk, lqy, lzh, macho, mad, maf, mag, mam, maq, mar, mas, mat, mav, maw, mda, mdb, mde, mdt, mdw, mdz, mht, mhtml, msc, mscompress, msh, msh1, msh1xml, msh2, msh2xml, mshxml, msi, msix, msixbundle, msp, mst, o, obj, odp, ods, odt, one, onenote, ops, package, pages, pbix, pdb, pdf, php, pif, pkg, plugin, ppa, ppam, pps, ppsm, ppsx, ppt, pptm, pptx, prf, prg, ps1, ps1xml, ps2, ps2xml, psc1, psc2, pst, pub, py, rar, reg, rev, rpm, rtf, scf, scpt, scr, sct, service, sh, shx, shb, shtm, so, sys, tar, tarz, terminal, tgz, tool, uif, url, vb, vbe, vbs, vhd, vsd, vsdm, vsdx, vsmacros, vss, vssx, vst, vstm, vstx, vsw, vxd, workflow, ws, wsc, wsf, wsh, xhtml, xla, xlam, xll, xls, xlsb, xlsm, xlsx, xlt, xltm, xltx, xz, z, zi, zip, zipx, The default selection from the above file type list is: ace, apk, app, appx, ani, arj, bat, cab, cmd,com, deb, dex, dll, docm, elf, exe, hta, img, iso, jar, jnlp, kext, lha, lib, library, lnk, lzh macho, msc, msi, msix, msp, mst pif, ppa, ppam, reg, rev, scf, scr, sct, sys, uif, vb, vbe, vbs, vxd wsc, wsf, wsh xll, xz z https://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection#anti-malware-policies https://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection-faq-eop?view=o365-worldwide https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=85611 | Review existing anti-malware policies and add the recommended file types to the block list. Since the default policy will now cover more file types, it’s likely that the expanded list of files in the default policy will block messages. If you do not want the new list of file types to be active, create a custom anti-malware policy (soon, before this feature deployment) with the file types that meet your needs. Review the following resources below to learn more:
Anti-malware policy Anti-malware policy protection FAQ Current list of file types in pre-populated list Current list of default file type selection The list of file types: 7z, 7zip, a, accdb, accde,ace, action, ade, adp, apk, app, appx, appxbundle, arj, asf, asp, aspx, ani, avi, bat, bin, bundle, bz, bz2, bzip2, cab, caction, cer, chm, cmd, com, command, cpl, crt, csh, css, deb, der, dex, dgz, dll, dmg, doc, docm, docx, dot, dotm, dtox, dylib, elf, exe, font, gz, gzip, hlp, hta, htm, html, img, imp, inf, ins, ipa, iso, isp, its, jar, jnlp, js, jse, kext, ksh, lha, lib, library, lnk, lqy, lzh, macho, mad, maf, mag, mam, maq, mar, mas, mat, mav, maw, mda, mdb, mde, mdt, mdw, mdz, mht, mhtml, msc, mscompress, msh, msh1, msh1xml, msh2, msh2xml, mshxml, msi, msix, msixbundle, msp, mst, o, obj, odp, ods, odt, one, onenote, ops, package, pages, pbix, pdb, pdf, php, pif, pkg, plugin, ppa, ppam, pps, ppsm, ppsx, ppt, pptm, pptx, prf, prg, ps1, ps1xml, ps2, ps2xml, psc1, psc2, pst, pub, py, rar, reg, rev, rpm, rtf, scf, scpt, scr, sct, service, sh, shx, shb, shtm, so, sys, tar, tarz, terminal, tgz, tool, uif, url, vb, vbe, vbs, vhd, vsd, vsdm, vsdx, vsmacros, vss, vssx, vst, vstm, vstx, vsw, vxd, workflow, ws, wsc, wsf, wsh, xhtml, xla, xlam, xll, xls, xlsb, xlsm, xlsx, xlt, xltm, xltx, xz, z, zi, zip, zipx, The default selection from the above file type list is: ace, apk, app, appx, ani, arj, bat, cab, cmd,com, deb, dex, dll, docm, elf, exe, hta, img, iso, jar, jnlp, kext, lha, lib, library, lnk, lzh macho, msc, msi, msix, msp, mst pif, ppa, ppam, reg, rev, scf, scr, sct, sys, uif, vb, vbe, vbs, vxd wsc, wsf, wsh xll, xz z ps://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection#anti-malware-polici ps://docs.microsoft.com/microsoft-365/security/office-365-security/anti-malware-protection-faq-eop?view=o365-world ps://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters=&searchterms=856 |
2022-07-06 | MC Messages | Updated June 23, 2022: We have updated the rollout timeline below. Thank you for your patience.
In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell. Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default. After rollout, this new expanded list along with the default selection will automatically apply to: Any new anti-malware policies that you create The default anti-malware policy The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below). This message is associated with Microsoft 365 Roadmap ID 85611 [When this will happen:] Starting early July (previously mid-June) and completion of deployment by late July | Updated July 05, 2022: We have updated the rollout timeline below and provided additional details. Thank you for your patience.
In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell. Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default. After rollout, this new expanded list along with the default selection will automatically apply to: Any new anti-malware policies that you create The default anti-malware policy: The current list of the selection will be retained and appended with the new file types being added as part of default selection. As a result, the list of file selections in the default policy will be expanded while retaining all of the existing selection. There will be no changes to any of the other settings (like zap, admin notification configuration etc). The only change which will happen to the default policy is the expansion of the selection. The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below). This message is associated with Microsoft 365 Roadmap ID 85611 [When this will happen:] Starting mid-July (previously early July) and completion of deployment by mid-August (previously late July) |
2022-07-06 | MC How Affect | Once these changes are rolled out, the list of default file type selections to the newly created policies and the default policy will differ from your existing policies. You will need to review the existing policies and update the list with recommended file types (see below). | Once these changes are rolled out, the list of default file type selections to the newly created policies and the default policy will differ from your existing policies. As the selection in the default policy will be expanded, there could be some messages which could be quarantined due to new file type addition. You will need to review the existing policies and update the list with recommended file types (see below). |
2022-07-06 | MC Last Updated | 06/23/2022 21:41:53 | 2022-07-05T21:24:46Z |
2022-07-06 | MC End Time | 08/31/2022 09:00:00 | 2022-09-26T09:00:00Z |
2022-06-24 | MC Messages | Updated June 1, 2022: We have updated this message to ensure visibility for affected organizations. Thank you for your patience.
In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell. Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default. After rollout, this new expanded list along with the default selection will automatically apply to: Any new anti-malware policies that you create The default anti-malware policy The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below). This message is associated with Microsoft 365 Roadmap ID 85611 [When this will happen:] Starting mid-June and completion of deployment by late July | Updated June 23, 2022: We have updated the rollout timeline below. Thank you for your patience.
In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell. Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default. After rollout, this new expanded list along with the default selection will automatically apply to: Any new anti-malware policies that you create The default anti-malware policy The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below). This message is associated with Microsoft 365 Roadmap ID 85611 [When this will happen:] Starting early July (previously mid-June) and completion of deployment by late July |
2022-06-24 | MC Last Updated | 06/01/2022 18:58:48 | 2022-06-23T21:41:53Z |
2022-06-02 | MC Messages | In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell.
Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default. After rollout, this new expanded list along with the default selection will automatically apply to: Any new anti-malware policies that you create The default anti-malware policy The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below). This message is associated with Microsoft 365 Roadmap ID 85611 [When this will happen:] Starting mid-June and completion of deployment by late July | Updated June 1, 2022: We have updated this message to ensure visibility for affected organizations. Thank you for your patience.
In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any email message with attachments of these specific file types will be handled per the policy settings. You can configure this specific list of file types by selecting them from the pre-defined list in the policy properties in the Microsoft 365 Defender portal or by manually adding your own (custom) file types using the power shell Set-MalwareFilterPolicy cmdlet in Exchange Online PowerShell. Based on internal research and best practices guidelines from industry and other organizations, we are updating the list of file types that are available for selection. Currently, there are 95+ file types in the list, of which 13 are pre-selected by default in the common attachment filter settings. We are expanding this list to cover over 200 file types, of which over 50 are selected by default. After rollout, this new expanded list along with the default selection will automatically apply to: Any new anti-malware policies that you create The default anti-malware policy The file selections in your existing anti-malware policies (enabled or not) will be retained and will not be updated automatically. You will need to manually update your existing policies with the recommended list of default file types (see below). This message is associated with Microsoft 365 Roadmap ID 85611 [When this will happen:] Starting mid-June and completion of deployment by late July |
2022-06-02 | MC Title | Exchange Online-Updates to the file type list in the common attachment filter | (Updated) Exchange Online-Updates to the file type list in the common attachment filter |
2022-06-02 | MC Last Updated | 05/13/2022 02:31:02 | 2022-06-01T18:58:48Z |
2022-06-02 | MC MessageTagNames | Feature update, Admin impact | Updated message, Feature update, Admin impact |
*starting April 2022
Last updated 12 months ago