Wi-Fi Security

Wi-Fi is an essential part of our daily lives, but without proper security measures, it can be exposed to various risks.
In this article, we will take a closer look at two particularly important risks: "unauthorized Access" and "packet sniffing (data eavesdropping)."

Risk of unauthorized Access

If a Wi-Fi network is Access, attackers can gain access to devices and data within the network, potentially causing damage such as:

risk:
1. Tampering with network settings
If an attacker gains access to the router's management console, they can change the DNS (Domain Name System) settings, enabling phishing attacks that redirect users to fake websites. They can also disrupt firmware updates, increasing the risk of vulnerabilities being exploited.

2. Data Leaks
Attackers can intercept data traveling across a network and steal personal information and credentials, including those used for online shopping and banking transactions.

3. Damage caused by mass communication
Access Wi-Fi can be used as part of a botnet, resulting in slower internet speeds and higher communication charges due to the large volume of data being transmitted.

countermeasure:
1. Strong passwords
Change your default password and make it longer and more complex.

2. Review of encryption method
Use the latest and most secure encryption methods, such as WPA3.

3. Regular firmware updates
Prevent vulnerabilities by keeping your router and Access point (AP) firmware up to date.

Packet Sniffing and Data Eavesdropping

Packet sniffing is an attack method used to intercept and analyze data transmitted over a network, and is particularly easy to carry out over unencrypted communications and public Wi-Fi.

risk:
1. Leakage of authentication information and personal information
Attackers use packet analysis tools to steal sensitive data such as login credentials and credit card numbers.

2. Social Engineering Exploits
Intercepted information may be used for account takeover and fraud.

3. The dangers of public Wi-Fi
Free Wi-Fi provided in places like cafes and airports is particularly vulnerable, and there have been cases where users have unknowingly connected to attackers' networks through fake Access points (APs).

countermeasure:
1. Use a VPN
Encrypting communications prevents interception.

2. Check HTTPS connection
Only use encrypted websites.

3. Avoid public Wi-Fi
Avoid connecting to untrusted Wi-Fi networks.

Wi-Fi security measures are essential to protect against cyber risks that arise in everyday life and in the workplace. To combat threats such as unauthorized Access and packet sniffing, proper password management, the use of encryption technology, and ensuring a secure communication environment are essential.

Strong password settings

The first line of defense in protecting your Wi-Fi network is a strong password.
It is recommended to strengthen security by following the points below.

1. Password complexity
- Combine uppercase and lowercase letters, numbers, and symbols.
- Must be at least 12 characters long.
- Avoid easily guessed words and personal information.

2. Password Management
- Change your password regularly.
- Don't use the same password for multiple networks.
- Consider using a password management tool.

3. Additional Security Measures
- Enable two-factor authentication to increase the security of your account.
- Set up a separate Wi-Fi network for guests, separate from your main network.

Encryption method (WEP, WPA, WPA2, WPA3)

The encryption method for a Wi-Fi network is crucial to ensuring data security. The most common encryption methods currently in use are WEP, WPA, WPA2, and WPA3.

1. WEP (Wired Equivalent Privacy)
- The oldest encryption method, which is currently known to have security vulnerabilities.
- Uses 64-bit or 128-bit keys.
- Not recommended for use.

2. WPA (Wi-Fi Protected Access)
- Developed as a successor to WEP.
- Uses TKIP, which is more secure than WEP.
- Uses a 256-bit key.
- It is now recommended to move to more secure methods.

3. WPA2 (Wi-Fi Protected Access 2)
- Developed in 2004, it has been widely used since 2006, replacing WPA.
- Uses the AES encryption algorithm, providing higher security than WPA.
- It is still used in many Wi-Fi networks today.

4.WPA3 (Wi-Fi Protected Access 3)
- The latest encryption method released in 2018.
- Uses 384-bit hash message authentication mode.
- Provides stronger encryption and ease of use with the "Personalized Open" feature.
- Improved WPA2 vulnerabilities to achieve higher security.

Recommended encryption methods:
Currently, the use of WPA3 or WPA2 is highly recommended to ensure the security of your Wi-Fi network. When purchasing new devices or routers, choosing WPA3-compatible products will ensure the highest level of security.

Basic Wi-Fi security settings include using a strong password and selecting an appropriate encryption method. It is important to set a complex, long password and change it regularly. Regarding encryption, use WPA3 or WPA2 and avoid older methods (WEP or WPA). Implementing these basic measures can significantly improve the security of your Wi-Fi network.

Finally, we strongly recommend keeping your Wi-Fi router firmware up to date. Security is constantly evolving, so staying up to date is paramount to maintaining a secure network environment.