Methods of network attack and prevention

Cyber ​​attacks are becoming a hot issue for businesses and organizations. Below is a summary of common cyber attacks and how to prevent them.

The most popular network attack methods today

1. Attack the network with Phishing

Phishing attacks (or phishing attacks) are a common form of network attack when an attacker falsifies a reputable website to deceive users into entering information. For example: instead of , the interface is often 99% similar to the original. With this method, an attacker will send an email or message to the user to click, so that they will redirect the user to a fake website containing malicious code. Inadvertently, when you login account information to the fake web, you lost your account.

How to Prevent Phishing attacks:

Check emails, messages, website links carefully before entering information
Install warning software, scan malware for websites.
Be wary of websites that use HTTP (less secure) instead of HTTPS (more secure).
See details: What is phishing? How to prevent Phishing attacks effectively

2. Attack the network from within

Hackers can install spyware on personal computers of members of the company, or get employees' passwords and passwords and then perform their attacks.

How to prevent network attacks from within the internal:

Limit the use of public wifi networks because they can expose your device to malicious code
Set complex passwords to avoid Password Attacks
Turn on 2-factor authentication via message.

3. Indirect attack

Hackers can attack an object through attacking an object of that object. Typically,  Supply Chain Attacks .


Always use Firewall and anti-virus programs
Always check input and output
Businesses need to be careful in choosing partners and suppliers

4. Attack according to attached file

Email attachments, Facebook message attachments are popular cyber attack tools. After clicking on the attached file, the user will immediately get a virus, causing serious consequences. Typically, ransomware ransomware in the first quarter of 2017 made many consumers in Vietnam and the world miserable.


With email: always check the sender, do not download files of unknown origin
Social networks and other services: Do not download attachments of unknown origin.

5. Anonymous attack

Viruses can invade a user's computer in unexpected ways such as antivirus software, learning software, web browsers, anonymous plug-ins, hidden in browser & software advertisements.


Always check the reliability of a program / software / plug-in before installing
Limit the installation of too many software / plug-ins in the machine, only install when really necessary.

6. Attack on people

The attacker can contact the system administrator, create a login dialog then ask the user to change the password, change the system configuration. This means of hacking the network  is very difficult to find a radical solution in addition to educating users' awareness.


Improve awareness and knowledge when using the internet and online services.
- A number of forms and methods of attacks on the network, other computers such as via usb, CD, IP address, server, through the printer's input ....

General solutions to prevent network attacks
To prevent network attacks, users need to take many defensive measures, protect, and improve their understanding of how to use the internet safely. The methods against network attacks are summarized below:

Use a reputable anti-virus / malware software.
Protect your passwords using 2-step authentication when logging in; set difficult passwords (including uppercase letters, numbers, and special characters)
Do not use unknown peripherals (USB, hard drive, CD). If required, please scan the virus first.
Do not click on strange links, suspicious websites, do not download attachments of unknown origin.
Regularly upgrade and update software, operating systems and tools.
For enterprises, it is necessary  to develop an overall strategy  to prevent possible complex cyber attacks.

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