What is a dictionary attack in computer science?

What is it?

A dictionary attack in computer science is when an attacker tries to access our credentials, either social networks, a web page using all possible words in the dictionary, if you are the one who uses as password "casa123" you are among the possible victims that the victimizer can access.

It is an attack that, due to its level of data, takes a long time to complete unless the attacker manages a bot created by an algorithm that takes dictionary words from a database and starts typing keys automatically, in this case if the website does not provide captcha or other tools for the security of users will probably gain access to an individual's credentials.

How to defend yourself?

Use strong passwords, as I mentioned in this POST that it is a brute force attack, a secure password must have 14 letters counting capital letters, numbers and characters. If you want to read how is a secure password go to the post I put there in the link maybe in a next blog post we will talk about how is a secure password. 

Constantly changing passwords also makes it more difficult for the attacker to find the password.

Opinions about this type of attack.

The attack in my opinion is somewhat silly and is one of the easiest to avoid, however people inexperienced in these matters, are very vulnerable to this type of attack as they think that having a password like this, is much easier to remember, but they forget that it is also easier to hack. This is security or ease of use, YOU CHOOSE....