keylogger prevention

Like what: If your query statement is select * from admin where username= "user" and password= "pwd" " Well, if my username is: 1 or 1=1 So, your query will become: SELECT * from admin where username=1 or 1=1 and password= "pwd" This way your query is passed, so you can enter your admin interface. Therefore, the user's input should be checked when guarding. Special-type special characters, such as single quotes, double quotes, semicolons, commas, colons, connection numbers, etc. are converted or

Now the internet is full of a lot of garbage stations, so that the Web virus how to prevent a lot of users have become a scramble to ask the topic. Small edit to discuss the Web page virus prevention skills, reduce the chance of poisoning, save a lot of unnecessary trouble. 1. Improve browser security level Many web viruses are attacked through the inclusion of malicious scripts, so we can improve the security level of the browser to prevent. In IE

This article illustrates the YII2 's XSS attack prevention strategy. Share to everyone for your reference, specific as follows: XSS Vulnerability Fixes Principle: Do not trust the data entered by the customerNote: The attack code is not necessarily in ① marks an important cookie as HTTP only, so that the Document.cookie statement in JavaScript will not get a cookie.② only allows the user to enter the data we expect. For example: In a TextBox of ag

Author: pizzaviatSource: Eighth RegimentHow to better achieve the prevention of hacker attacks, I mention personal views! First, the free program does not really have a fee, since you can share the original code, then the attacker can analyze the code. If you pay attention to precautions in detail, your site's security will be greatly improved. Even if there are vulnerabilities such as SQL injection, attackers will not be able to take your site immedi

("%3chtml") | | Str_input.contains ("%3cbody") | | Str_input.contains ("%3clink") | | Str_input.contains ("%3cscript") | | Str_input.contains ("%3chtml") | | Str_input.contains ("%3cbody") | | Str_input.contains ("%3clink") | | Str_input.contains ( " " "% 3Cmeta ") | | Str_input.contains ( "%3cmeta") | | str_input.contains ( " "% 3CSTYLE ") | | Str_input.contains ( "%3cstyle") | | str_input.contains ( " "%3Cxml" ) || Str_input.contains ( "%3cxml")) {return true;} else {return false;}} I'm th

PHP XSS Attack prevention If you like a product title, you can use Strip_tags () filter to erase all HTML tags.If something like a product description, you can use the Htmlspecialchars () filter to escape the HTML tag. SQL injection prevents numeric type parameters, which can be coerced into shaping using (int)/intval ().A string type parameter that can be used to escape special characters using mysql_real_escape_string (). java XSS attacks prevent

following is a classic question about thread deadlock: "The question of dining philosophers" as the last example of this section. The question is this: five philosophers sit around a table, with a bowl of rice and a chopstick in front of each person. Here each philosopher can be regarded as a separate thread, and each chopstick can be regarded as a lock. Each philosopher can sit, think, and eat in one of three states. It is important to note that every philosopher eats two chopsticks, so the qu

PHP Tutorial SQL Prevention injection and attack technology implementation and methods1. The MAGIC_QUOTES_GPC option in the PHP configuration file php.ini is not turned on and is set to off 2. Developers do not check and escape data types But in fact, the 2nd is the most important. I think that it is the most basic quality of a web programmer to check the data type entered by the user and submit the correct data type to the MySQL tutorial. But in re

-hacker technology to prevent. Managed Server Web site public services provided externally Due to the needs of the company, the corporate network provides external public services. In this case, it is necessary to rely on comprehensive preventive measures to effectively protect against hacker attacks. The destruction of the main way is: Modify the Site page, and even use the server to attack other units of the site, resulting in damage to corporate reputation. Office automation network usin

This article is mainly on the cause of the PHP Program Vulnerability Analysis and prevention methods for a detailed introduction, the need for friends can come to the reference, I hope to help you. Misuse of includenbsp; nbsp; 1. Vulnerability reason:nbsp; nbsp; include is the most commonly used function in writing PHP Web sites and supports relative paths. There are many PHP scripts that directly take an input variable as an include parameter, resu

guess the field name, look at the login form on the Web site, generally for convenience, the field name and form of the input box to take the same names. 3. Special note: The Address bar of the + code after the introduction of the program is interpreted as a space,%2b interpreted as the + number,%25 interpreted as%, specific reference to the UrlEncode of the relevant introduction. 4. When injected with the Get method, IIS records all of your commit strings and does not record the Post method, s

When the computer is turned on, or when the operating system is started, or when some applications are being used, or when you are about to exit the operating system, the "Crash" of the "beast" is likely to come head-on at any moment. So, how to do to avoid the computer "crash" trouble? Below, the author is based on the cause of "panic" and prevention of the method is divided into several points for everyone to introduce, I hope the following article