Hazards of Yunma mine
Publish: 2021-05-13 09:37:42
1. Website of coin printing mine www.poolin.com Currently, it supports BTC, BCH, BSV, Zec, LTC, ETN, DCR, dash, XmR and other currencies. The official of
their service is very good
their service is very good
2. There are btc.com, antpool ant, f2pool fish, viabtc and btc.top lebit. I think it's wiser to go straight through here.
3. As a technical service organization of filecoin, we suggest to choose the latter. If we only buy the hard disk miner, there will be upgrade later, hosting is the best choice.
4. There is an upper limit to the total amount of Maia. If there is an economy with Mai as currency, then the economy is deflationary. As for whether it is scarce or not, it is a matter of subjective judgment, and there is no unified conclusion. What is in excess of supply may not be scarce, and what is in short supply may not be scarce. In those days, salt was in short supply
5. digital currency generally refers to bitcoin, Laite coin, Puyin, Gougou coin, TaiFang and other digital cryptocurrencies. Media reported that before the Spring Festival, the digital bill trading platform based on blockchain promoted by the people's Bank of China has been tested. The listing of the digital currency Research Institute of the central bank ring the spring Festival means that the people's Bank of China is the first to study digital currency and real application of the central bank
6. It's true that FDG mine pool is a world leading mining machinery time sharing platform, which provides users with a complete set of cloud mining service solutions. It packages and manages complex processes such as mining machinery purchase, logistics and transportation, power management, mine operation and maintenance, and users can enjoy the service with one click. In short, FDG mine pool is a one-stop service platform for cloud mining.
7. Analysis of the harm mechanism and prevention of malicious code
Abstract: in today's Internet era, many people are still troubled by malicious code on Web pages. In the process of website code editing, the whole web page will be paralyzed because of the reprint and use of malicious code. This paper analyzes the harm and prevention of "malicious code" in order to stimulate our security awareness and actively deal with the security threats from the network
key words: malicious code java applet JavaScript ActiveX
I. overview of malicious code
malicious code mainly includes computer virus, worm, Trojan horse, backdoor, logic bomb, etc. It uses script language to write some malicious code, using IE vulnerability to achieve virus implantation. When users log in to some websites containing web viruses, web viruses will be quietly activated. Once these viruses are activated, some resources of the system can be used to destroy them
with the continuous development of Internet information technology, the "malicious" nature of code and its harm to users have aroused widespread concern. Therefore, it is necessary for us to understand malicious code to minimize its harm< (1) webpage virus type malicious code
webpage virus type malicious code, as the name suggests, is to use the security vulnerability of software or system operating platform to automatically execute through Java applet application program, JavaScript script program and ActiveX network interaction support embedded in HTML markup language on webpage, Illegal malicious programs that forcibly modify user registry and system configuration, or illegally control user system resources, steal user files, maliciously delete files, or even format hard disk
according to the object of action and performance characteristics of popular web viruses, web viruses can be divided into the following two categories:
(1) modify IE browser through script programs edited by java script, applet and ActiveX, as follows:
a default home page (first page) is modified; B. the home page settings are blocked and locked, and the settings are invalid and cannot be modified; The default ie search engine of C has been modified; D right mouse button menu is added illegal website advertising links
(2) modify the user's operating system through script programs edited by java script, applet, and ActiveX, as follows:
a boot up dialog box (usually the content that the user doesn't know what to say); After system B starts normally, but ie is locked, the web address is automatically called and opened; C format hard disk; D illegally reading or stealing user files; E lock and disable the registry, edit reg, transfer from [Star Paper Network] www.starlunwen.net Open mode error in registry file format
(2) script malicious code
script is actually a program, which is generally an editing language provided by an application. The application program includes Java script, VBScript, macro of application program and batch language of operating system. Script plays a different role in every application. For example, it can achieve various dynamic effects in web pages. In office, it usually uses "macro" to execute a series of commands and instructions, which can realize the automation of task execution, provide efficiency, or create macro virus
(3) vulnerability attack code
is a program written by using software or operating system vulnerabilities to attack user systems or network servers. For example, hackers use Microsoft IE browser vulnerability to write vulnerability attack code to attack users< Third, the implementation mechanism of malicious code
the behavior of malicious code is different, and the destructor is different, but the basic mechanism is basically the same, and the whole process is divided into six parts:
① intrusion into the system. Intrusion into the system is a necessary condition for malicious code to achieve its malicious purpose. There are many ways of malicious code intrusion, such as: the program downloaded from the Internet itself may contain malicious code; Accept e-mail that has been infected with malicious code; Install uncensored software on the system from CD or USB flash disk; Hackers or attackers deliberately implant malicious code into the system< (2) maintain or upgrade the existing privileges. The spread and destruction of malicious code can only be completed by stealing the legitimate rights of users or processes< (3) covert strategy. In order to prevent the system from finding that malicious code has intruded into the system, malicious code may change its name, delete source files or modify the security policy of the system to hide itself
4. After the malicious code intrudes into the system, wait for certain conditions, when the virus has sufficient permissions, it will attack and carry out destructive activities
5. The essence of malicious code is destructive, its purpose is to cause information loss, leakage, damage system integrity and so on< (6) repeat the attack process from 1 to 5< At present, malicious code prevention methods are mainly divided into two aspects: host based malicious code prevention methods and network-based malicious code prevention methods< (1) host based malicious code prevention methods
① feature based scanning technology: host based malicious code prevention method is the most commonly used technology to detect malicious code. Before the scanner works, the feature file of malicious code must be established first, and the matching search is carried out in the scan file according to the feature string in the feature file. Users update the scanning software by updating the feature file to find the latest version of malicious code. This technology is widely used in the current anti-virus engine< (2) check sum: check sum is a control technology to protect the integrity of information resources, such as hash value and cyclic rendancy code. As long as a bit inside the file changes, the checksum value will change. The system that is not infected by malicious code will first generate detection data, and then periodically use the check sum method to detect the change of files
③ prevention of malicious code by secure operating system: an important part of successful intrusion of malicious code is to gain control of the system and make the operating system allocate system resources for it. No matter what kind of malicious code, no matter what kind of malicious purpose, must have the corresponding permissions. Otherwise, it will not be able to achieve its intended malicious targets, or only be able to achieve part of its malicious targets
(2) network based malicious code prevention methods
e to the considerable complexity and behavioral uncertainty of malicious code, the prevention of malicious code requires the comprehensive application of a variety of technologies, including malicious code monitoring and early warning, malicious code propagation inhibition, malicious code vulnerability automatic repair, malicious code blocking, etc. Network based malicious code prevention methods include: malicious code detection defense and malicious code early warning
these are mainly web malicious code, that is, the harm caused by web viruses. The worm virus written with script is more harmful. It is no longer aimed at one computer, but spreads rapidly, causing harm to all computers on the network, until the network is dragged down and finally collapses< Conclusion with the rapid development of Internet information technology, any software has its own loopholes, so we should do:
1) security settings. When we browse the Internet, we can't take chances. We don't care about the security settings. We think that malicious code has nothing to do with me, and we don't care about the most basic browser security settings. As a result, the system's immunity against malicious code is reced, and the system can't survive when it encounters malicious code
2) do not visit websites of unknown origin. Don't easily browse some unidentified websites and download related content
3) upgrade software and install system patches. Software to update the version in time, especially the operating system, must often "play" patches, often upgrade
4) install antivirus software (firewall). Install and upgrade the anti-virus software (firewall) to the latest version in time, and turn on the real-time monitoring function to kill the virus irregularly, so as to keep the malicious code out of the door to the maximum extent. This article is from: http: / / www.xingwen.com www.starlunwen.netwww.starlunwen.net/dianqi/120173.html
Abstract: in today's Internet era, many people are still troubled by malicious code on Web pages. In the process of website code editing, the whole web page will be paralyzed because of the reprint and use of malicious code. This paper analyzes the harm and prevention of "malicious code" in order to stimulate our security awareness and actively deal with the security threats from the network
key words: malicious code java applet JavaScript ActiveX
I. overview of malicious code
malicious code mainly includes computer virus, worm, Trojan horse, backdoor, logic bomb, etc. It uses script language to write some malicious code, using IE vulnerability to achieve virus implantation. When users log in to some websites containing web viruses, web viruses will be quietly activated. Once these viruses are activated, some resources of the system can be used to destroy them
with the continuous development of Internet information technology, the "malicious" nature of code and its harm to users have aroused widespread concern. Therefore, it is necessary for us to understand malicious code to minimize its harm< (1) webpage virus type malicious code
webpage virus type malicious code, as the name suggests, is to use the security vulnerability of software or system operating platform to automatically execute through Java applet application program, JavaScript script program and ActiveX network interaction support embedded in HTML markup language on webpage, Illegal malicious programs that forcibly modify user registry and system configuration, or illegally control user system resources, steal user files, maliciously delete files, or even format hard disk
according to the object of action and performance characteristics of popular web viruses, web viruses can be divided into the following two categories:
(1) modify IE browser through script programs edited by java script, applet and ActiveX, as follows:
a default home page (first page) is modified; B. the home page settings are blocked and locked, and the settings are invalid and cannot be modified; The default ie search engine of C has been modified; D right mouse button menu is added illegal website advertising links
(2) modify the user's operating system through script programs edited by java script, applet, and ActiveX, as follows:
a boot up dialog box (usually the content that the user doesn't know what to say); After system B starts normally, but ie is locked, the web address is automatically called and opened; C format hard disk; D illegally reading or stealing user files; E lock and disable the registry, edit reg, transfer from [Star Paper Network] www.starlunwen.net Open mode error in registry file format
(2) script malicious code
script is actually a program, which is generally an editing language provided by an application. The application program includes Java script, VBScript, macro of application program and batch language of operating system. Script plays a different role in every application. For example, it can achieve various dynamic effects in web pages. In office, it usually uses "macro" to execute a series of commands and instructions, which can realize the automation of task execution, provide efficiency, or create macro virus
(3) vulnerability attack code
is a program written by using software or operating system vulnerabilities to attack user systems or network servers. For example, hackers use Microsoft IE browser vulnerability to write vulnerability attack code to attack users< Third, the implementation mechanism of malicious code
the behavior of malicious code is different, and the destructor is different, but the basic mechanism is basically the same, and the whole process is divided into six parts:
① intrusion into the system. Intrusion into the system is a necessary condition for malicious code to achieve its malicious purpose. There are many ways of malicious code intrusion, such as: the program downloaded from the Internet itself may contain malicious code; Accept e-mail that has been infected with malicious code; Install uncensored software on the system from CD or USB flash disk; Hackers or attackers deliberately implant malicious code into the system< (2) maintain or upgrade the existing privileges. The spread and destruction of malicious code can only be completed by stealing the legitimate rights of users or processes< (3) covert strategy. In order to prevent the system from finding that malicious code has intruded into the system, malicious code may change its name, delete source files or modify the security policy of the system to hide itself
4. After the malicious code intrudes into the system, wait for certain conditions, when the virus has sufficient permissions, it will attack and carry out destructive activities
5. The essence of malicious code is destructive, its purpose is to cause information loss, leakage, damage system integrity and so on< (6) repeat the attack process from 1 to 5< At present, malicious code prevention methods are mainly divided into two aspects: host based malicious code prevention methods and network-based malicious code prevention methods< (1) host based malicious code prevention methods
① feature based scanning technology: host based malicious code prevention method is the most commonly used technology to detect malicious code. Before the scanner works, the feature file of malicious code must be established first, and the matching search is carried out in the scan file according to the feature string in the feature file. Users update the scanning software by updating the feature file to find the latest version of malicious code. This technology is widely used in the current anti-virus engine< (2) check sum: check sum is a control technology to protect the integrity of information resources, such as hash value and cyclic rendancy code. As long as a bit inside the file changes, the checksum value will change. The system that is not infected by malicious code will first generate detection data, and then periodically use the check sum method to detect the change of files
③ prevention of malicious code by secure operating system: an important part of successful intrusion of malicious code is to gain control of the system and make the operating system allocate system resources for it. No matter what kind of malicious code, no matter what kind of malicious purpose, must have the corresponding permissions. Otherwise, it will not be able to achieve its intended malicious targets, or only be able to achieve part of its malicious targets
(2) network based malicious code prevention methods
e to the considerable complexity and behavioral uncertainty of malicious code, the prevention of malicious code requires the comprehensive application of a variety of technologies, including malicious code monitoring and early warning, malicious code propagation inhibition, malicious code vulnerability automatic repair, malicious code blocking, etc. Network based malicious code prevention methods include: malicious code detection defense and malicious code early warning
these are mainly web malicious code, that is, the harm caused by web viruses. The worm virus written with script is more harmful. It is no longer aimed at one computer, but spreads rapidly, causing harm to all computers on the network, until the network is dragged down and finally collapses< Conclusion with the rapid development of Internet information technology, any software has its own loopholes, so we should do:
1) security settings. When we browse the Internet, we can't take chances. We don't care about the security settings. We think that malicious code has nothing to do with me, and we don't care about the most basic browser security settings. As a result, the system's immunity against malicious code is reced, and the system can't survive when it encounters malicious code
2) do not visit websites of unknown origin. Don't easily browse some unidentified websites and download related content
3) upgrade software and install system patches. Software to update the version in time, especially the operating system, must often "play" patches, often upgrade
4) install antivirus software (firewall). Install and upgrade the anti-virus software (firewall) to the latest version in time, and turn on the real-time monitoring function to kill the virus irregularly, so as to keep the malicious code out of the door to the maximum extent. This article is from: http: / / www.xingwen.com www.starlunwen.netwww.starlunwen.net/dianqi/120173.html
8. Don't worry. It's normal. You need to verify your identity, but don't disclose the verification code, password and other information.
9. I'm not a big God, but I understand this thing better.
after the dark cloud Trojan horse enters the computer, it will hide in the top 30 sectors of the disk, and then wait for you to accidentally trigger it, it will automatically install a lot of malware on your computer, and it will also automatically send these malware to all your group files, which is very terrible, Your computer will be a puppet of hackers by then. If you find this kind of Trojan horse in your computer, you should use Tencent computer manager to check and kill your computer and solve this kind of Trojan horse in time
after the dark cloud Trojan horse enters the computer, it will hide in the top 30 sectors of the disk, and then wait for you to accidentally trigger it, it will automatically install a lot of malware on your computer, and it will also automatically send these malware to all your group files, which is very terrible, Your computer will be a puppet of hackers by then. If you find this kind of Trojan horse in your computer, you should use Tencent computer manager to check and kill your computer and solve this kind of Trojan horse in time
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