Microsoft Office password protection the password can be determined through guesswork or social engineering, the underlying cipher is not important. Microsoft Office password protection Microsoft Office password protection is a security feature to protect Microsoft Office (Word, Excel, PowerPoint) documents with a user-provided password. As of Office 2007, this uses strong encryption; earlier versions used weaker systems and are not considered secure. Office 2007–2013 employed 128-bit key AES password protection which remains secure. Office 2016 employed 256-bit key AES password protection which also remains secure. The Office 97–2003 password protection used 40-bit key RC4 which contains multiple vulnerabilities rendering it insecure. Microsoft Office applications
Most common words in Spanish Most common words in Spanish Below are two estimates of the most common words in Modern Spanish. Each estimate comes from an analysis of a different text corpus. A "text corpus" is a large collection of samples of written and/or spoken language, that has been carefully prepared for linguistic analysis. To determine which words are the most common, researchers create a database of all the words found in the corpus, and categorise them based on the context in which they are used. The first table lists the 100 most common word forms from the Corpus de Referencia del Español Actual