What problems still exist in current network security?

At present, network security faces the following problems:

1. network attack: hackers use vulnerabilities and weaknesses to attack the network, such as DDoS attacks, malware, phishing, etc.

2. Data leakage: Sensitive information of individuals and institutions may be stolen by hackers, resulting in privacy leakage and property losses.

3. Identity theft: Hackers can steal personal identity information and use it for illegal activities, such as virtual identity theft and credit card theft.

4. Unsafe applications: Some applications have vulnerabilities, which may be exploited by hackers, resulting in system crash or data loss.

5. Social engineering: Hackers use social engineering to obtain users' personal information, such as obtaining passwords through deception and deception.

6. Lack of security awareness: Users lack network security awareness and are vulnerable to online fraud and attacks.