Cyber Security Fundamentals

1. Introduction to Cyber Security

Discover the essentials of cybersecurity in this section, where we unravel the core concepts. Gain insights into digital threats and learn how to safeguard your online presence. Get ready for a straightforward exploration of the cyber world!

What is Cybersecurity?

Common Cyber Threats

Malware

Phishing

DoS and DDoS attacks

Challenge: Check Password Strength

2. Web Cyber Security

Dive into the dynamic realm of Web Cyber Security, where we demystify the intricate layers of the OSI (Open Systems Interconnection) model. Uncover the vulnerabilities within each OSI block, gaining a profound understanding of the threats that lurk in the digital space. Explore the vital aspects of physical and software protection, arming yourself with the knowledge needed to safeguard web environments against potential risks and ensure robust cyber resilience.

OSI Model

Web Protocols

Challenge: Check Website Web Protocol

Examples of Cyber Attacks

Password Hashing

Challenge: Creating Hash Function

Security Headers

Challenge: Extracting Security Headers From Website

3. Information Encryption

In the digital world, security is crucial to protect sensitive information. Encryption is key in this defense, ensuring data remains private and safe from unauthorized access. Now, we will explore the basics of information encryption, its methods, and its vital role in maintaining the integrity and privacy of digital communication.

What is Information Encryption?

Caesar Cipher

Challenge: Implementing Caesar Cipher

XOR Algorithm

Challenge: Implementing XOR Encryption

XOR decryption

Challenge: Check Password Strength

Pay attention!
In the challenges, we will utilize the Python language. Fulfilling the tasks won't demand an in-depth understanding of this language. However, if you want to feel more confident, you can consider Introduction to Python course.
Go here if needed.

Now, let's create a simple program to assess the strength of a password. As we've emphasized earlier, having a robust password is crucial for protection against malware and phishing attempts. So, let's proceed with building our straightforward program!

Task

You have to write a function that checks the strength of the password. Password is considered strong if it has more than 8 characters and there is at least one number and at least one letter.

Use < operator to check if the provided password has more than 8 characters.
Use .search() method of re library to check if there is at least one number and at least one number.
Note
re is the abbreviation for the "regular expression" module in Python. It provides powerful tools for pattern matching and text manipulation. If you want to have more practice with these expressions, you can try our Regex Wizards project.

_{Once you've completed this task, click the button below the code to check your solution.}

Everything was clear?

Section 1. Chapter 6

Course Content

Cyber Security Fundamentals

Challenge: Check Password Strength

Task

You have to write a function that checks the strength of the password. Password is considered strong if it has more than 8 characters and there is at least one number and at least one letter.

Use < operator to check if the provided password has more than 8 characters.
Use .search() method of re library to check if there is at least one number and at least one number.
Note
re is the abbreviation for the "regular expression" module in Python. It provides powerful tools for pattern matching and text manipulation. If you want to have more practice with these expressions, you can try our Regex Wizards project.

_{Once you've completed this task, click the button below the code to check your solution.}

Everything was clear?

Section 1. Chapter 6