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In Excel and Word 95 and prior editions a weak protection algorithm is used that converts a password to a 16-bit verifier and a 16-byte XOR obfuscation array [1] key. [4] Hacking software is now readily available to find a 16-byte key and decrypt the password-protected document. [5] Office 97, 2000, XP and 2003 use RC4 with 40 bits. [4]
Once a document is encrypted against unauthorized users, an IRM user can apply certain access permissions that permit or deny a user from taking certain actions on a piece of information. Some of these standard permissions are included below. Strong in use protection, such as controlling copy & paste, preventing screenshots, printing, editing.
It uses encryption and a form of selective functionality denial for limiting access to documents such as corporate e-mails, Microsoft Word documents, and web pages, and the operations authorized users can perform on them. Companies can use this technology to encrypt information stored in such document formats, and through policies embedded in ...
File locking is a mechanism that restricts access to a computer file, or to a region of a file, by allowing only one user or process to modify or delete it at a specific time, and preventing reading of the file while it's being modified or deleted.
Most file systems include attributes of files and directories that control the ability of users to read, change, navigate, and execute the contents of the file system. In some cases, menu options or functions may be made visible or hidden depending on a user's permission level; this kind of user interface is referred to as permission-driven.
Office XP and Office 2003 comes with an optional Unbind utility that, upon execution, extracts the contents of the Binder document to a directory of the user’s choosing. [7] This utility may be installed either through the Add or Remove Features functionality of Microsoft Office’s installation wizard or online from Microsoft Download Center ...
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A1: A block prevents a user account, an IP address, or a range of IP addresses from editing Wikipedia, either partially or entirely. Blocked users can still open, access, and read any article or page on Wikipedia; they just cannot modify or edit any pages that are restricted by the block.