MOTW isn’t saved with the document, it’s a new file attribute saved in the NTFS file system alongside other long-standing attributes like Read Only, Date Created, Date Modified etc. Mark of the Web is something done by Windows (not Office) to tag incoming documents as coming from the Internet, an untrusted or Restricted Zone. Mark of the Web or MOTW in WindowsĪt the heart of this new protection is the Mark of the Web or MOTW. Criminals use all sorts of tricks to fool people into clicking Enable Macros. Unblocking the macros isn’t simple in fact it’s deliberately difficult.Īt the moment, suspicious documents get a warning which is too easily bypassed with a single click. The key difference is that macros are blocked from running under the new scheme. Important stuff to know and unknowns yet to be disclosed. The new protections only apply to Office for Windows and only start implementation in April 2022.Īs usual, the devil is in the detail and, boy, is there a lot of detail. For example, Office will not be disabling all macros by default. Some of the headlines are flat out wrong. This new feature is different and hopefully more secure. Some might be surprised that it’s not in Office already because there’s already warnings about ‘external’ content. The ‘Learn More’ link goes here to explain the dangers of unknown or Internet sourced documents plus how to unblock a document’s macros.Īs presented, the new check is a good thing. The document, workbook or slides can still be read, it’s only the attached macros that won’t work. “SECURITY RISK Microsoft has blocked macros from running because the source of this file is untrusted.
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