Everything you should know about Passwords
A password (password) on the Internet or any computer system
, serves to authenticate the User, or is used in the process of verifying the identity of the User, ensuring that this is who he claims to be. If another person has access to your password, she can use it to impersonate you on the Internet. Some of the reasons why a person could use your password are: read and send e-mails in his name;
obtain sensitive information from data stored on your computer, such as numbers of credit cards;
hide their real identity and then strike attacks against other computers on. Therefore, the password deserves special consideration, after all it is your responsibility. What should not be used in the preparation of a password? Name, last name, social security numbers, license plates, phone numbers and dates must be off your list of passwords. These data can be easily obtained and an attacker, possibly, would use this information to try to authenticate as you. There are several rules for creating passwords, with one very important rule is never to use words that are part of dictionaries. There are software trying to discover passwords and testing combining words in various languages and often have lists of words (dictionaries) and lists of names (first names, music, movies, etc.).. What is a good password? A good password should have at least eight characters (letters, numbers and symbols) should be simple to enter and most importantly, it should be easy to remember.
Systems are usually distinguished from lowercase letters, which already helps in composition of the password. For example, "square" and "sQuARe" are different passwords.
However, passwords are easy to find using software to crack passwords, they do not have numbers and symbols, in addition to contain many repetitions of letters. How to make a good password? The more "messy" for a better password, because the harder it is to discover it. So, try mixing uppercase and lowercase letters, numbers and punctuation marks. A rule really practical and generates good passwords difficult to crack is to use any sentence and get the first, second or last letter of each word. For example, using the phrase "potato is born spreads the floor" can generate the password "! BqnsepC" (the exclamation mark was placed at the beginning of a symbol to add the password). Passwords generated this way are easy to remember and are usually difficult to be discovered. But remember: the password "! BqnsepC" is no longer a good password, as part of this booklet.
Note that if you have difficulties to memorize a strong password, and better write it down and storing it in a safe place, than opt for the use of weak passwords. How many different passwords should I use? Try to identify the number of places where you need to use a password. This Issue be equivalent to the amount of different passwords to be kept by you. Use different passwords, one for each location, and extremely important, because it can mitigate the damage caused, if anybody finds one of your passwords. To highlight the importance of using different passwords, imagine that you are responsible for conducting financial transactions in a number of bank accounts and these accounts all have the same password. So look to answer the following questions:
What are the consequences if anyone found out this password?
And if they used different passwords for each account, if someone found one of the passwords, a potential loss would have the same proportion? How often should I change my passwords? You should change your passwords regularly, avoiding long periods. One suggestion and you realize these exchanges every two or three months. Try to identify the services you use and which require a password, whether access to your ISP, e-mail, bank account or other features available to change passwords regularly and use such features.
If you can not choose your password at the time to hire the service search exchange it with the utmost urgency. Try to use services that you can choose your password.
Remember that regular exchanges are very important to ensure the confidentiality of your passwords. What special precautions should I take with the passwords? It does not help establish a password very safe and difficult to be discovered, is to use the password someone can see it. There are several ways someone can figure out your password. Among them, one could:
observe the process of typing your password;
use any method of persuasion, to try to convince him to hand over their password;
capture your password as it travels over the network.
For this latter case, there are techniques that permit data, as they travel between networks. It is possible for someone to extract sensitive information such data such as passwords, if they are not encrypted. Therefore, some of the main precautions that you should have with your passwords are:
make sure not being observed to enter your password;
Do not give your password to anyone, under any circumstances;
do not use computers to third parties (for example, in Internet cafes, cybercafes, stands
events, etc.) in operations that require the use of their passwords;
make sure that your provider offers encrypted services, especially those involving the provision of a password. What do I need the username and password of Administrator (or root) on a computer? The User Administrator (or root) and extremely important, as has all privileges on a computer. It should be used in situations where a normal User does not have privileges to perform an operation, for example, certain administrative tasks, maintenance or installation and configuration of some software. It is known that, as a matter of convenience and especially in the domestic environment, many people use the User Administrator (or root) to perform any type of activity. It is used to connect to the Internet, browse using the browser, read e-mails, write documents, etc..
This is a procedure that should always be avoided, because you, as User administrator (or root) could accidentally delete files essential to the functioning of the operating system or software installed on your computer. Or, could inadvertently install malicious software, such as User Administrator (or root), have all the privileges needed, and can do anything. Therefore, some of the main precautions that you should have are:
develop a good password for the User Administrator (or root), as discussed in Sections 2.3, and follow the procedures described in Sections 2.6;
use the User Administrator (or root) only when strictly necessary;
create as many users with normal privileges, as there are people who use your computer, to replace so the User Administrator (or root) on routine tasks such as reading e-mails, Internet browsing, document production, etc..
Everything you should know about Passwords
By: Luis Miguel
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