Ms Excel is used very widely nowadays by everyone because it is very helpful and it helps in saving a lot of time. It is being used for so many years and it gets upgraded every year with new features. The most impressive thing about MS Excel is that it can be used anywhere for any kind of work. For example, it is used for billing, data management, analysis, inventory, finance, business tasks, complex calculations, etc. One can even do mathematical calculations using this and can also store important data in it in the form of charts or spreadsheets.
Microsoft Excel（マイクロソフト・エクセル）は、マイクロソフトがWindows、macOS、iOSおよびAndroid向けに開発・販売している表計算ソフトである。Microsoft Wordとともに、同社のオフィススイート「Microsoft Office」の中核をなすアプリケーションである。. Export to Excel or select the.mht file to download it. If you would like to export Wiki page rather directly in its user interface, it is not feasible yet, but it is currently on the backlog. We welcome and encourage you to submit your own idea or vote for this similar one which is turned in by other customer in Teams User Voice. Microsoft Excel is a deep program rich in features and functionality.
MS Excel provides security to your files so that no one else can see your files or ruin them. With the help of MS Excel, you can keep your files password protected. MS Excel can be accessed from anywhere and everywhere. You can even work on MS Excel using mobile if you don't have laptops. There are so many benefits of using MS Excel that it has become an inevitable part of lives of millions of people. MS Excel has numerous tools and features that make one's work easy and saves one's time also.
To use MS Excel to the best of its ability one must know its benefits and advantages. Roxio toast 18 review. Following are the ten best uses of MS Excel:
Uses of Microsoft Excel: Analyzing and storing data
One of the best uses of MS Excel is that you can analyze larger amounts of data to discover trends. With the help of graphs and charts, you can summarize the data and store it in an organized way so that whenever you want to see that data then you can easily see it. It becomes easier for you to store data and it will definitely save a lot of time for you.
Once the data is stored in a systematic way, it can be used easily for multiple purposes. MS Excel makes it easier to implement various operations on the data through various tools that it possesses.
Uses of Microsoft Excel: Excel tools make your work easier
There are so many tools of MS Excel that make your work extremely easy and save your time as well. There are wonderful tools for sorting, filtering and searching which all the more make you work easy. If you will combine these tools with tables, pivot tables etc. then you will be able to finish your work in much less time. Multiple elements can be searched easily from large amounts of data to help solve a lot of problems and questions.
Uses of Microsoft Excel: Data recovery and spreadsheets
Pictures of a mac 10. Another best use of MS Excel is that if your data gets lost then you can recover it without much inconvenience. Suppose, there is a businessman who has stored his important data in MS Excel and somehow it gets lost or the file gets damaged then he must not worry as with the new MS Excel XML format one can restore the lost or damaged file data.
The next important use is that there are spreadsheets in MS Excel which also makes your work easy and with the help of new Microsoft MS Excel XML format you can reduce the size of the spreadsheet and make things compact easily.
Uses of Microsoft Excel: Mathematical formulas of MS Excel make things easier
Next best use of MS Excel is that it makes easy for you to solve complex mathematical problems in a much simpler way without much manual effort. There are so many formulas in MS Excel and by using these formulas you can implement lots of operations like finding sum, average, etc. on a large amount of data all at once. Therefore, people use MS Excel whenever they have to solve complex mathematical problems or they need to apply simple mathematical functions on tables containing larger data.
Uses of Microsoft Excel: Security
The chief use of MS Excel is that it provides security for excel files so people can keep their files safe. http://xyhywx.xtgem.com/Blog/__xtblog_entry/19450366-google-chrome-9-0-download#xt_blog. All the files of MS Excel can be kept password-protected through visual basic programming or directly within the excel file. People store their important data in the MS Excel so that they can keep their data in an organized way and save their time as well. Almost every person wants his files to be password protected so that no one is able to see them or ruin them so here MS Excel solves this problem very efficiently.
Uses of Microsoft Excel: Add sophistication to data presentations
Next use of MS Excel is that it helps you in adding more sophistication to your data presentations which means that you can improve the data bars, you can highlight any specific items that you want to highlight and make your data much more presentable easily. Directx 14.
Suppose you have stored data in MS Excel and you want to highlight something that is important so then you can do that through the various features of data presentations available in MS Excel. You can even make the spreadsheets more attractive on which you have stored data.
Uses of Microsoft Excel: Online access
Another use of MS Excel is that it can be accessed online from anywhere and everywhere which means that you can access it from any device and from any location whenever you want. It provides the facility of working conveniently which means that if you don't have laptops then you can use mobile and do your work easily without any problem. Therefore, due to the large amount of flexibility that MS Excel provides, people like to work on MS Excel so that they can comfortably work without worrying about their device or location.
Uses of Microsoft Excel: Keeps data combined at one location
Another interesting use of MS Excel is that you can keep all your data at one location. This will help you in saving your data from getting lost. It will keep all your data in one place and then you will not have to waste your time in searching for the files. So it will save your time and whenever need be, you can look up the categorized and sorted data easily.
Uses of Microsoft Excel: Helps businessmen in developing future strategy
You can represent data in the form of charts and graphs so it can help in identifying different trends. With the help of MS Excel, trend lines can be extended beyond graph and therefore, it helps one in analyzing the trends and patterns much easier. In business, it is very important to analyze the popularity of goods or the selling pattern that they follow to maximize sales. MS Excel simplifies this task and helps businessmen grow and maximize profits through the same.
Uses of Microsoft Excel: Manage expenses
MS Excel helps in managing expenses. Suppose if a doctor is earning around 50,000 per month then he will make some expenses as well and if he wants to know how much he is exactly spending per month then he can do it with the help of MS Excel easily. He can write his monthly income as well as expenses in the excel tables and then he can get to know that how much he is spending and he can thus, control his expenses accordingly.
There are a lot of benefits of using MS Excel, which is why it is used worldwide by people for performing so many tasks. It not only saves time but also it makes the work easier. It can almost perform every type of task. For example, you can do mathematical calculations and you can also make graphs as well as charts for storing the data. It becomes easy for the businessman to calculate things and store data in it.
You can store a large amount of data in the MS Excel and analyze it as well. It helps in keeping the data combined in one place so that data does not get lost and one does not waste time in finding a particular data. Due to these factors, it has become such a popular software and we have become habitual of using it.
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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 modern 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.
Old unreal tournament. The Office 97–2003 password protection used 40-bit key RC4 which contains multiple vulnerabilities rendering it insecure.
Types[edit]
Microsoft Office applications offer the use of two main groups of passwords that can be set to a document depending on whether they encrypt a password-protected document or not.
Passwords that do not encrypt a password-protected document have different security level features for each of Microsoft Office applications as mentioned below.
- In Microsoft Word[1] passwords restrict modification of the entire document.
- In Microsoft Excel passwords restrict modification of the workbook, a worksheet within it, or individual elements in the worksheet.
- In Microsoft PowerPoint[1] passwords restrict modification of the entire presentation.
Because of the lack of document encryption, all the passwords mentioned above cannot reliably protect a document from a hacker. Most password cracking software can remove such protection from a password-protected document in very little time.[contradictory]
The password that encrypts a document also restricts the user from opening the document. It is possible to set this type of password in all Microsoft Office applications. If a user fails to enter a correct password to the field which appears after an attempt to open a password-protected document, viewing and editing the document will not be possible. Due to the encryption of a document protected by a password to open it, a hacker needs to decrypt the document to get access to its contents. To provide improved security, Microsoft has been consistently enhancing the Office encryption algorithm strength.
History of Microsoft Encryption password[edit]
In Excel and Word 95 and prior editions a weak protection algorithm is used that converts a password to a 16-bit key.[2] Hacking software is now readily available to find a 16-bit key and decrypt the password-protected document instantly.[3]
Microsoft Excel Templates
In Excel and Word 97 and 2000 the key length was increased to 40 bits.[2] This protection algorithm is also currently considered to be weak and presents no difficulties to hacking software.
The default protection in Office XP and 2003 was not changed, but an opportunity to use a custom protection algorithm was added.[2] Choosing a non-standard Cryptographic Service Provider allows increasing the key length. Weak passwords can still be recovered quickly even if a custom CSP is on.
In Office 2007 (Word, Excel and PowerPoint), protection was significantly enhanced since a modern protection algorithm named Advanced Encryption Standard was used.[2] At present there is no software that can break this encryption. With the help of the SHA-1 hash function, the password is stretched into a 128-bit key 50,000 times before opening the document; as a result, the time required to crack it is vastly increased.
Undertale beta code. Excel and Word 2010 still employ AES and a 128-bit key, but the number of SHA-1 conversions has doubled to 100,000[2] further increasing the time required to crack the password.
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Office 2013 (Access, Excel, OneNote, PowerPoint, Project, and Word)uses 128-bit AES, again with hash algorithm SHA-1 by default.[4]
Office 2016 (Access, Excel, OneNote, PowerPoint, Project, and Word) uses 256-bit AES, the SHA-1 hash algorithm, and CBC (Cipher Block Chaining) by default.[5]
Excel Worksheet and Macro protection[edit]
The protection for worksheets and macros is necessarily weaker than that for the entire workbook as the software itself must be able to display or use them. In Excel it is particularly weak, and an equivalent password can easily be found of the form ABABABABABAx where the first 11 chars are either A or B and the last is an ASCII character.[citation needed]
Password recovery attacks[edit]
There are a number of attacks that can be employed to find a password or remove password protection from Excel and Word documents.
Password removal can be done with the help of precomputation tables or a guaranteed decryption attack.
https://policesoft.mystrikingly.com/blog/markdownd-3-6-download-free. Attacks that target the original password set in Microsoft Excel and Word include dictionary attack, rule-based attack, brute-force attack, mask attack and statistics-based attack.
The efficiency of attacks can be considerably enhanced if one of the following means is applied: multiple CPUs (distributed attack), GPGPU[6] (applicable only to Microsoft Office 2007–2010 documents) and cloud computing. Due to weak passwords, at the moment, cloud computing facilities are capable of unlocking as many as ca. 80% of the files saved in the Office 2007–2010 format.[citation needed] Passwords of sufficient length and complexity typically cannot be brute-forced.
Office 2013 introduces SHA-512 hashes in the encryption algorithm, making brute-force and rainbow table attacks slower. However, it has to be noted that all SHA hash algorithms were never designed for password hashing and are thus not considered secure anymore.[7] Modern, slower and thus more secure hashes such as PBKDF2, scrypt or other KDFs have not yet been implemented in Office.
For xlsx files that can be opened but not edited, there is another attack, as the file format is a group of XML files within a zip, unzipping editing and replacing the workbook.xml file, and/or the individual worksheet XML files with identical copies, except that the unknown key and salt are replaced with a known pair, or removing the key altogether allows the sheets to be edited.
There is specialized software designed to recover lost Microsoft Office passwords on pre-AES encryption.
Ultimately, the security of a password-protected document is dependent on the user choosing a password of sufficient complexity. If the password can be determined through guesswork or social engineering, the underlying cipher is not important.
References[edit]
- ^ ab'Password protect documents, workbooks, and presentations – Support – Office.com'. Office.microsoft.com. Retrieved 26 December 2012.
- ^ abcde'Microsoft Office File Format Documents'. Msdn.microsoft.com. Retrieved 26 December 2012.
- ^'Russian Password Crackers: Password Recovery (Cracking) FAQ'. Password-crackers.com. Retrieved 26 December 2012.
- ^'Cryptography and encryption settings for Office 2013'. docs.microsoft.com. Retrieved 4 July 2018.
- ^DHB-MSFT. 'Cryptography and encryption in Office 2016'. docs.microsoft.com. Retrieved 2018-12-07.
- ^'GPU estimations'. passcovery.com. Archived from the original on 10 February 2015. Retrieved 5 December 2020.
- ^'Is using SHA-512 for storing passwords tolerable?'. Information Security Stack Exchange. Retrieved 2019-05-25.
