ostrich hiding

Overload, override, and hiding of member functions are very confusing. c ++ programmers must understand the concept, otherwise errors will be hard to prevent. 1. Heavy Load and coverageFeatures of member functions being overloaded:(1) the same range (in the same class );(2) The function name is the same;(3) parameters are different;(4) virtualKeyword is optional. Override refers to the function of a derived class that overwrites the base class functio

run the application bound with the Trojan, the trojan will be installed again. Bind to an application. If it is bound to a system file, every Windows Startup starts a Trojan.2. Hide it in the configuration fileThe trojan is really tricky. I know that cainiao usually use a graphical interface operating system. Most configuration files that are not very important are ignored, this provides a hiding place for Trojans. In addition, with the special funct

Process hiding? Why? You don't know? I'm dizzy! Process hiding technology is mostly used in Trojans and viruses (you can also say ?!), It is used to improve the survival rate. The implementation methods vary depending on the WIN system architecture. There are many materials for some common methods, so I will not talk about them here!Here, "pseudo-hide" means that although the process exists in the "WINDOWS

Generally, hacker attacks start with IP addresses. First, obtain an IP address, and then analyze and test the IP address accordingly. If a vulnerability is discovered from this IP address, then you can launch the attack. If you hide an IP address, you can avoid hacker attacks to some extent. Below we will introduce several common IP address hiding methods, and hope to help you.Use proxy Proxy is the most common method to Hide IP addresses. After proxy

1. Overloading of class member functions:Overloading: If several functions within the same scope have the same name but the formal parameter list is different, we call it overloading.Features that are overloaded by member functions:(1) the same range (for example, in the same class);(2) The function has the same name;(3) different parameters;(4) The virtual keyword is optional.2, overwrite refers to the derived class function overrides the base class function, the characteristics are:(1) differe

1: Method overrides: The method in the base class is identified with the virtual keyword and then overridden in the inheriting class(override), so that the methods in the base class have been overridden in the subclass, and the methods in the base class have lost functionality in the subclassThe When a reference to an object of a base class is directed directly to an object of the inheriting class (polymorphism), calling the method is a heavyWrite the method.2: Method

year. Rootkit is a synthesis word consisting of "Root" and "Kit". It is literally the system administrator toolbox. This technology first appeared in UNIX. It is used to replace some important system files and confuse administrators with viewing system information. Now this technology has been transplanted to Windows and is widely used. Nowadays, people usually call RootKit a backdoor with functions such as hiding processes,

the parent's variable or method, then child cannot access the variable or method that the parent is overridden, and the parent's overridden variable or method is also inaccessible after the child is converted to parentFirst look at the rules for overriding and hiding methods and variables in Java when they inherit1. Instance and static variables of the parent class can be hidden by a variable of the same name in the quilt class2. Static method of the

Reproduced from: http://www.cn-java.com/www1? Action-viewnews-itemid-68459 More exciting! I. Basic Recommendations for class hiding Although it is very easy to hide classes in Java, you only need to use three keywords. But in most cases, the Java programmer is wondering when to hide classes. Indeed, on the Java development language platform, there are usually no strict requirements for classes to be hidden and classes to be hidden. For this reason, d

Rootkit Trojan: hiding the peak of Technological Development Since the "ghost of the World" pioneered the DLL Trojan age, the DLL Trojan and malicious programs used for thread injection have It can be seen everywhere that apart from the widely used DLL loader program to run and load the DLL entity in the startup item, the "cover letter" also includes It is a rare way to pass through the registry.The "HKEY_LOCAL_MACHINE/software/Microsoft/WindowsNT/Cur

derived: G (INT) function hides the base: G (float) instead of the overload.(3) The derived: H (float) function hides base: H (float) instead of overwrite.# Include Class base{Public:Virtual void F (float X) {cout Void g (float X) {cout Void H (float X) {cout };Class derived: public Base{Public:Virtual void F (float X) {cout Void g (int x) {cout Void H (float X) {cout };Example 8-2-2 (a) overload, overwrite, and hide a member functionAccording to the author's investigation, many c ++ programmer

Image: First of all, we need to understand: 'The process-free Trojan is the Trojan horse that uses technical means to hide the process', which obviously does not belong to the process-free Trojan horse that uses technical means to hide the process, you have your own process, but if you cannot crack its hidden technology, you will not be able to see its process. 　　 How is the process hidden? This inevitably involves some technical issues. Let's try to make it simple and clear. For detailed implem

PHP gets the URL of the first two pages by hiding the form control, the form URL I also encountered similar problems in the course of learning:For example, the backstage is to make such a child: But the reality is this: Workaround:By hiding form controls "> So the value of $_server[' Http_referer '] appears to be temporarily stored in $_post[prevurl]. In fact, the principle of this method is to put the p

PHP backdoor hiding and maintenance skills, php backdoor skills After a successful test, we usually want to keep the privilege longer. the work of leaving a backdoor is crucial. Generally, the backdoor layout includes but is not limited to database permissions, WEB permissions, system user permissions, and so on. in this article, some ideas hidden from the public backdoors are popularized. AD: 0 × 00 Preface After a successful test, we usually want to

What is Data Hiding? Some people will find it hard to understand. In the previous article, when we introduced the class, we mentioned that the keyword used to define variables is public, but there are more than public, private, protected, static, and final, these keywords are used to limit the access permissions of class members, including variables and methods. Next, we will explain the usage of the first three keywords. What is Data

PHP backdoor hiding skills test report. Read the PHP backdoor hiding skills test report. recently, many friends have asked me if I can hide my Trojan horse in HTML or image, in fact, it is very concealed to insert a Trojan into the php file. if you want to put it in an HTML file or image, read the test report. For example, Recently, many of my friends have been asking me if I can hide my Trojan horse in HTM

has a property or a method with the same name, the property or method form of the parent class is missing, and it actually exists.Note: When a hidden event occurs, the declared type is a class that invokes the property or method of the corresponding class without dynamic bindingMethod hiding has only one form, that is, the parent class and subclass have the same static methodProperties can only be hidden and cannot be overwrittenSubclass instance var

JavaScript design pattern-Prelude (encapsulation and Information Hiding)3. encapsulation and Information Hiding: Information Hiding is used for decoupling and defining private data and methods. Encapsulation is a technology used to hide information. It defines and uses private data through closures. The interface plays a role in this: provides a contract that rec

to modify php.ini, Extension=php_exif.dllChange its load order to the back of Extension=php_mbstring.dllAs can be seen, this picture back door with the help of Preg_replace \e parameters, relying on PHP variable parsing execution, and the use of Base64 encoding, and finally rely on the file identification of a complete shell, as the first backdoor hidden children's shoes a small reminderOf course, as long as there is a containing point, the form of the containing file is diverse, even contains

We know that in Java, subclasses can inherit the parent class, and if the subclass declares a method that has the same name as the parent class, we all know that if you rewrite it, there are actually two cases in which the method and variable are overwritten and hidden when inheriting.Hide : Child hides the parent's variables and methods, then the child cannot access the parent's hidden variables or methods, but, b translates into a, you can access a hidden variable or methodOverwrite : Child ov