Single-packet attacks are divided into scanning and snooping attacks, malformed packet attacks, and special packet attacks. Ping of death is a special packet attack.

For compressed files, the virus detection system can directly detect them.

Which of the following iterations is correct for the description of the management center?

Which of the following technologies can achieve content security? (Multiple Choice)

With regard to APT attacks, the attacker often lurks for a long time and launches a formal attack on the enterprise at the key point of the incident.
Generally, APT attacks can be summarized into four stages:
1. Collecting Information & Intrusion
2. Long-term lurking & mining
3. Data breach
4. Remote control and penetration
Regarding the order of these four stages, which of the following options is correct?