How can I block Dangerous Macros?

How can we block the macro dangerous files.

You can easily add file extensions in the Anti Spam File Extension blocking menu.

Please see more information at:

(https://www.file-extensions.org/filetype/extension/name/microsoft-office-files)

file extension dotm	Microsoft Word Open XML macro-enabled document template
file extension ppsm	Microsoft PowerPoint macro-enabled Open XML complete slide show
file extension pptm	Microsoft PowerPoint macro-enabled Open XML presentation

file extension xlsm	Microsoft Excel Open XML macro-enabled workbook
file extension docm	Microsoft Word Open XML macro-enabled document

file extension xlam	Microsoft Excel Open XML macro-enabled add-in file
file extension xlm	Microsoft Excel macro
file extension xltm	Microsoft Excel Open XML macro-enabled workbook template
file extension ppam	Microsoft PowerPoint macro-enabled Open XML add-in
file extension potm	Microsoft PowerPoint 2007/2010 macro-enabled Open XML template file
file extension mam	Microsoft Access macro shortcut file
file extension sldm	Microsoft PowerPoint 2007/2010 macro-enabled Open XML slide file

It is recommended blocking attentions such as:

OCM, XLSM, PPTM

This can help block specific Malware as well.

See more here:

https://blogs.technet.microsoft.com/mmpc/2016/02/24/locky-malware-lucky-to-avoid-it/

https://isc.sans.edu/forums/diary/Locky+JavaScript+Deobfuscation/20749/

It can also be recommended to block javascript extensions .js