What is Internet security? How do you achieve security?

Cyber security means that the hardware, software and data in the network system are protected from damage, alteration and leakage due to accidental or malicious reasons, and the system runs continuously, reliably and normally, and the network service is not interrupted.

Cyber security encompasses a wide range of contents, including all personal information, public information, personal data, public data, etc., account security, and property security that appear on the network.

Network security refers to the prevention and monitoring of resources that can be accessed by the network without the authorization of others. In layman's terms, it is to prevent the data from being maliciously destroyed, changed and stolen by others. Let the program run smoothly.

What is Cybersecurity? Why focus on cybersecurity? Now, they are all defrauding money on the Internet, so network security is also very important, don't believe in those rhetorical things to teach, in addition, don't casually go to sweep what ***, to receive any money.

It is so that you can surf the Internet without being implanted with illegal programs, etc.

Cybersecurity is important.

1.System security: The security of the operation system is to ensure the security of the information processing and transmission system.

It focuses on keeping the system up and running. Avoid damage and loss to the system storage, processing, and transmission of messages due to system collapse and damage. Avoid leakage due to electromagnetism.

Network security is the information security on the network, which means that the hardware, software and data in the network system are protected from accidental or malicious reasons to be destroyed, changed and leaked, the system runs continuously, reliably and normally, and the network service is not interrupted. Broadly speaking, all relevant technologies and theories related to the confidentiality, integrity, availability, authenticity and controllability of information on the network are the fields to be studied in network security. Cyber security involves both technical and management issues, and the two aspects complement each other and are indispensable.

The technical side is mainly focused on preventing attacks from external illegal users, while the management side focuses on the management of internal human factors. How to more effectively protect important information and data and improve the security of computer network systems has become an important issue that must be considered and solved by all computer network applications.

Network security means that the hardware, software and data in the network system are protected from accidental or malicious reasons to be damaged, changed or leaked, the system runs continuously, reliably and normally, and the network service is not interrupted.

Cybersecurity, by its very nature, is information security on the network. Broadly speaking, all related technologies and theories related to the confidentiality, integrity, availability, authenticity and controllability of information on the network are the research fields of network security.

The purpose of network security is to ensure the smooth progress of the user's business, and meeting the user's business needs is the primary task of network security.

The specific meaning of cybersecurity changes depending on the "perspective". For example, from the perspective of users (individuals, enterprises, etc.), they hope that information involving personal privacy or business interests will be protected by confidentiality, integrity and authenticity when transmitted on the network, so as to prevent others or opponents from infringing on users' interests and privacy by means of eavesdropping, impersonation, tampering, denial, access and destruction.

The concept of cybersecurity.

Network security usually refers to the security of computer networks, and in fact it can also refer to the security of computer communication networks. The computer communication network is a system that interconnects several computers with independent functions through communication equipment and transmission, and realizes information transmission and exchange between computers with the support of communication software. The computer network refers to the system that uses communication means to connect a number of independent computer systems, terminal equipment and data equipment that are relatively scattered in the region for the purpose of sharing resources, and exchanges data under the control of the protocol.

The fundamental purpose of the computer network is to share resources, and the communication network is the way to realize the sharing of network resources, therefore, the computer network is secure, and the corresponding computer communication network must also be secure, and it should be able to realize information exchange and resource sharing for network users. In the following, network security refers to both computer network security and computer communication network security.

The basic meaning of security: there is no threat objectively, and there is no fear subjectively. That is, the object does not worry about its normal state being affected.

Network security can be defined as: a network system is not subject to any threats and infringements, and can normally realize the function of resource sharing. In order to make the network realize the resource sharing function normally, it is necessary to ensure the normal operation of the hardware and software of the network, and then to ensure the security of data and information exchange.

As can be seen from the previous two sections, the abuse of resource sharing has led to network security problems. Therefore, the technical approach to cyber security is to implement limited sharing.

Network security means that the hardware, software and data in the network system are protected from damage, alteration and leakage due to accidental or malicious reasons, and the system runs continuously, reliably and normally, and the network service is not interrupted. So what are the main aspects of cyber security? It mainly includes system security, application security, physical security, and management security.

1. System security.

System security refers to the application of system safety engineering and system safety management methods in the system life cycle, identifying hidden dangers in the system, and taking effective control measures to minimize the danger, so that the system can achieve the best safety degree within the specified performance, time and cost range.

The security of business systems and operating systems is the premise of ensuring business security. In addition to paying attention to the function of the information system, we should also pay attention to the security of the system application. It is not only necessary to use strong passwords to protect the information system, but also to regularly check and upgrade the system to strengthen the two-way protection of the system internally and externally.

There are many factors involved in whether a system is safe or not, including the security awareness of the system developer, operator errors, and regular inspections of the system.

2. Application security.

Application security refers to ensuring the security of the process and results of application use. In other words, other security tools or policies are used to eliminate the potential leakage and theft of computing and transmission data during the use of applications or tools.

Applications and systems are inseparable, and applications involve more personal information and important data, whether they are web applications or mobile applications.

3. Physical Security.

In network security, physical security is also a very important part, in addition to the purchase and deployment of equipment, we should also consider whether it is properly stored, whether it is operated and maintained, and whether it is operated properly. Environmental accidents happen from time to time, and natural disasters cannot be predicted, but they can be avoided. In addition, the storage of network equipment should be checked and upgraded regularly, and there will be security risks in network equipment, whether the policy is updated and the environment of the computer room should be considered by us.

Fourth, management security.

Management is the most important part of security in a network. Unclear division of labor and responsibilities, and imperfect safety management system may lead to management safety risks.

When the network is attacked or other security threats are encountered, real-time detection, monitoring, and alarm cannot be performed. At the same time, when an accident occurs, it is impossible to trace the cause, which requires us to record the access activities of the site at multiple levels and detect illegal intrusion in time.

Here are some common security devices that play an important role in keeping your network secure:

Firewall: A firewall is the foundation of network security, which protects the network from threats by monitoring and controlling network traffic to prevent unauthorized access and malicious attacks.

Intrusion Detection System Intrusion Prevention System (IDS IPS): The IDS IPS monitors and analyzes network traffic, detects and prevents potential intrusions and attacks, and provides timely alerts or defensive measures.

Antivirus software security gateway: Antivirus software scans and detects malware and viruses in computer systems and takes measures to isolate or remove them, while security gateways provide filtering and security protection for network traffic.

Virtual Private Network (VPN) device: A VPN device establishes an encrypted tunnel connection for remote access and secure data transmission, ensuring the transmission of sensitive data over the public network.

Encryption device: Encryption device is used to encrypt and decrypt data, ensure the confidentiality of data in transmission and storage, and prevent unauthorized access and theft.

Security Information and Event Management (SIEM): SIEM systems integrate and analyze information from a variety of security devices and log sources to provide real-time security monitoring and incident response capabilities.

Threat Intelligence Platform: The threat intelligence platform collects and analyzes global threat intelligence data to provide real-time threat intelligence and vulnerability information to help organizations understand and respond to emerging security threats in a timely manner.

These security devices use various technical means (such as access control, traffic monitoring, encryption, etc.) to ensure the security of the Liang's barrier network. They can monitor and block potential threats, intrusions, and malicious behaviors in real time, providing security guards and alerting mechanisms to protect networks and systems from the risk of attacks and data breaches. At the same time, the security appliance can also provide logging and auditing functions for subsequent security analysis and investigation.