nástroj Archives - DIGITAL SELF-DEFENSE

Brute-force attack – demo

Milan — Wed, 19 Dec 2018 17:13:02 +0000

What is a brute-force attack? Simplified, it’s actually trying out all possible combinations of characters to break the password. It’s time consuming, so it’s inefficient for long passwords.
How long it would take to calculate it here.
Try with the short passwords in the demo below. The procedure is as follows:

You can choose your username and password (only lowercase letters and up to three characters long), then click the “Register” button. This simulates registration on a server (the name and password are stored in the database).
Click the “Run” button: this will trigger the attack – the program tests the character combinations in the “Password” field in the “Login” section (simulation of the login form).
Once you’ve found the combination, you can try logging in with the “Login” button.

Basic info about creating passwords below.

Choose username:

Password (max. 3 lowercase letters)

* Brute-force attack is time and resources consuming, it would take too long in the web browser

Username

Password

Brute-force

Server database

Username

Password

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How long it can take to crack your password?

Milan — Tue, 18 Dec 2018 12:47:25 +0000

How long will your password resist the so-called brute-force attack (testing all possible combinations of characters)? This tool calculates the approximate time that computers need to break the password.
This type of attack depends on the length of the password and the characters used. But it’s just one password information. If you are using any of the known or frequently used passwords, breaking is independent of the length – the computer does not pass through a combination of characters, but tries each password.

Password length:

Contains:

Lowercase letters
Uppercase letters
Numbers
Special characters

Graphic cards

Supercomputer/cloud

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Message encryption – demo

Milan — Thu, 13 Dec 2018 12:54:40 +0000

Plain (email)

Client to Server (Facebook Messenger, Gmail)

End to end (Signal, Threema, Wire)

You

Key:

Transfer to server (internet):

Hacker

Server:

AdminPolice

Transfer to receiver (internet):

Hacker

Receiver:

Key:

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Data breach check

Milan — Thu, 06 Dec 2018 11:45:07 +0000

You can check if your login credentials (and other data) were breached.
Submit your username or email address you are using for registrations.
Do not submit your password (here or anywhere else)!

You need to have javascript enabled. In case the form is not working you can visit the site directly: https://haveibeenpwned.com/

What to do in case your data breached?

Don’t panic!
Change the password on affected website
If you use the same password on other service/webpage change it there too (you should use unique password for every service/webpage).
Turn on two- (multi-) factor authentication if it is possible.

If you don’t know how to do these tnings we can do it together. Contact me for personal consultancy or visit workshop where you can learn how to do it.

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