What are the traditional security threats?

Viruses and malware, phishing, hacking.

1. Viruses and malware: including computer viruses, Trojans, worms, etc. These malware can destroy computer systems, steal data, monitor user activities, and so on.

2. Phishing: By forging emails and websites, users are tricked into entering sensitive information, such as user name, password and bank account number, so as to steal user account information.

3. Hacking: Hackers steal data, destroy systems and tamper with data by attacking computer systems and network devices.