Attack is a problem that every webmaster may encounter, how to do a good job of protection, ensure the normal operation of the webmaster and data security, is a challenge that every webmaster must face. This topic describes the common types of attacks, their causes, and how to protect them. Xiaoyun CDN
1. Common types of attacks.
1.DDoS attacks: Distributed denial-of-service attacks are a common type of network attack that congests the target with a large number of useless requests, resulting in the failure of normal access.
2.SQL injection: An attacker obtains, tampers with, or deletes data in a database by inserting malicious SQL ** into the input field.
3.XSS attack: Cross-site scripting is a common network attack in which an attacker injects malicious scripts into the website to steal the user's cookie information, thereby impersonating the user's identity for illegal operations.
4.Brute-force attacks: Attackers try various passwords to crack the user's login account and obtain sensitive information.
5.CC attack: Also known as a challenge collapsar attack, the target is congested with a large number of requests, causing the server to run out of resources and fail to respond to requests normally.
2. Reasons for being attacked.
1.*There are vulnerabilities: such as failing to update the software version in a timely manner, failing to verify the legitimacy of user input, etc.
2.Improper server configuration: For example, access rights are not restricted, and appropriate firewall rules are not set.
3.Lack of security awareness: such as not encrypting sensitive information, not using strong passwords, etc.
3. How to do a good job of protection.
1.Regularly update software versions and fix vulnerabilities in a timely manner. For open-source software, pay attention to important updates and patches released by the official body, and apply them in a timely manner.
2.Verify the legitimacy of user input to prevent common network attacks such as SQL injection and XSS attacks. Filter and clean the data submitted by users to ensure data security.
3.Restrict access to avoid unauthorized access and actions. Set up appropriate firewall rules to prevent malicious requests and traffic congestion. For DDoS attacks and CC attacks, you can use the defense measures provided by the cloud service provider, such as CDN acceleration and traffic scrubbing. At the same time, regularly check the resource usage of the server to ensure the performance and stability of the server.
4.Sensitive information is stored and transmitted encrypted to protect the security of user data. Use strong password policies and multi-factor authentication to improve account security. For password cracking and brute-force attacks, you can use verification codes, slider verification, and other methods to increase the difficulty of cracking.
5.Establish a sound security audit mechanism, and conduct regular security vulnerability scanning and penetration testing. Deal with and fix the vulnerabilities and problems found in a timely manner. At the same time, establish an emergency response plan so that you can respond quickly and reduce damage in the event of an attack.
6.Strengthen safety awareness training to improve the safety awareness and skills of all employees. Only when every employee has sufficient safety awareness can we better ensure the safety of the company.
To sum up, being attacked is a common cybersecurity problem, but by taking effective protective measures, the losses caused by attacks can be effectively reduced and avoided. Webmasters should pay attention to the security of the world, strengthen security protection, and ensure the normal operation of the company and data security.