Yes, a Man-in-the-Middle Attack (MITM) can steal data by exploiting flaws in network protocols. In this attack, an attacker inserts himself between two parties' communications, thereby being able to eavesdrop, tamper with, or disguise the content of the communication. Here are several protocol flaws that may be exploited: 1. **HTTP**: Since HTTP is not encrypted, attackers can easily steal and tamper with unencrypted data. It is recommended to use HTTPS. 2. **SSL/TLS**: Although TLS is designed for encrypted communications, improper configuration (such as using outdated protocol versions or weak encryption suites) can be exploited. In addition, insecure certificate management (such as not verifying certificates or accepting self-signed certificates) can also lead to MITM attacks. 3. **ARP spoofing**: An attacker can associate his own MAC address with the target IP address by sending forged ARP messages, causing data to flow through the attacker's device. 4. **Wi-Fi encryption protocol weaknesses**: Outdated wireless encryption protocols such as WEP are easily cracked, and attackers can monitor traffic in unsecured or open Wi-Fi networks. To protect yourself from MITM attacks, you can take the following measures: - Use HTTPS instead of HTTP. - Make sure TLS configuration is updated and secure. - Use VPN for communication encryption. - Be cautious about public Wi-Fi and avoid handling sensitive information on untrusted networks. - Use strong passwords and two-factor authentication. These strategies can effectively mitigate the risk of MITM attacks. In addition, keeping software and systems updated is also a good preventive measure.