misconfiguration attacks

Shellshock, a recently discovered bash vulnerability that allows attackers to inject code into your machine. This makes Mac OS and Linux under threat of malicious attack. So how do I determine if my Mac or Linux is vulnerable to Shellshock attacks? Believe that a lot of fruit powder is now worried about this ask, let's talk about how to determine if your machine is vulnerable to attack. Shellshock uses bash scripts to access your computer. Just this,

1, ensure the security of the server systemThe first step is to ensure that the server software does not have any vulnerabilities to prevent attackers from invading. Make sure the server is up to date with the latest system and security patches. Remove unused services on the server and close unused ports. For Web sites running on the server, make sure that they have the latest patches and no security holes.2. Hide the server real IPServer front-end plus CDN Transfer (free Baidu Cloud acceleratio

The internet is rich and colorful, basically able to find the resources we need, but also because so many friends are joined to the ranks of the webmaster. Among the many stationmaster also can exist infighting thing. In particular, our personal webmaster, due to limited technical and financial resources, very easy to use on the host, VPS after the attack did not have the ability to defend, leading to our host or VPS to our account suspension, IP hangs and so on. In particular, we are using the

filtering XSS attacks using filter Blog Categories:Technology Life filter to achieve foot injection attack filter source http://winnie825.iteye.com/blog/1170833 First, the realization of the idea: 1. The use of regular expressions to implement script filtering, this method of high accuracy, but may be based on the requirements can not be changed; 2. In order to ensure flexible configuration (including regular expression flexibility), the use of XML c

According to foreign media reports, computer security experts have warned users, while the use of IE and Firefox may cause users to be remotely attacked. When users use IE browser, if they encounter a malicious Web site, the system will also register a "firefoxurl://" handler. This program allows the browser to interact with specific content on the Web, which can cause users to suffer from remote attacks. Earlier this week, security researchers Thor

Attack | data | Some attacks on database SQL database Specific content: For a lot of news at home and abroad, BBS and E-commerce sites are used asp+sql design, and write ASP programmers Many (there are a lot of just graduated), so, Asp+sql attack success rate is also relatively high. This kind of attack method and the version of NT and the SQL version is not much relationship, there is no corresponding patch, because the vulnerability is caused by

If a client makes a request to a server-side interface, and if the request information is encrypted and intercepted by a third party to the request package, the third party cannot decrypt the data obtained, but the request package can be used for repeated request operations. If the server does not perform replay attacks, it will be the result of increased pressure on the servers and data disruption. The time stamp is used to resolve this problem.

By default, the extraterrestrial virtual host management platform has installed protection services against FTP brute-lift attacks. But you have to further set it to work: Start--management tools--Local Security policy The account policy---set 100 times and the error is locked. Why not limit it to 3 times? 3 times too little. User error, you must go to the user area to modify the FTP password to log in, so the general recommendation is 100 tim

Copy Code code as follows: #!/bin/bash Declare gw= ' Route-n | Grep-e ' ^0.0.0.0 ' Declare gwname= ' echo $GW | Grep-oe ' \w*$ ' Declare gwip= ' echo $GW | Grep-oe ' [0-9]\{2,3\}\. [0-9]\{1,3\}\. [0-9]\{1,3\}\. [0-9]\{1,3\} ' Declare gwmac= ' Arp-n | GREP-E $gwip | Grep-oe ' [0-9a-f]\{2\}:[0-9a-f]\{2\}:[0-9a-f]\{2\}:[0-9a- F]\{2\}:[0-9a-f]\{2\}:[0-9a-f]\{2\} ' echo "Switch $gwname ARP: $GWIP-$gwmac to Static" Arp-s $gwip $gwmac echo "done, off ARP reuqest ..." Ifconfig

Ways to prevent Cross-site scripting attacks 1. Use space to replace special characters% 2. Use @, specifically the following statement exec= "INSERT into User (Username,psw,sex,department,phone,email,demo) VALUES (' username" ', ' "PSW ', ' sex ', ' ' department ', ' ' phone ' ', ' ' email ', ' ' @demo ' )" Conn.execute exec Replace with: exec= INSERT INTO User (Username,psw,sex,department,phone,email,demo) VALUES (' @username ', ' @psw ', ' @sex

(strtemp," Net%20user " ) or Instr (strtemp, "") or Instr (strtemp, "%20or%20") Then Response.Write "Response.Write "Alert (illegal address!!) );" Response.Write "location.href=error.asp;" Response.Write "End If %> [CODE end] C # Check string, anti-SQL injection attack This example is tentatively = number and number. BOOL Checkparams (params object[] args) { String[] lawlesses={"=", ""}; if (lawlesses==null| | lawlesses.lengthConstructs a regular expression, example: lawlesses is an = number an

Asp.net| attacks Web site security, many times, almost represents the security of a unit network. For the site as a corporate external image of the enterprise or Government, the site security is more important. Now many sites have installed a firewall and other security equipment, but some simple offense, but rather nerve-racking. For example, through the site, the submission of malicious code, which is more difficult to prevent an attack, a relativel

SQL injection attack (SQL injection) is an attacker submitting a carefully constructed SQL statement in a form, altering the original SQL statement, and causing a SQL injection attack if the Web program does not check the submitted data. General steps for SQL injection attacks: 1, the attacker to access the site with SQL injection vulnerabilities, looking for injection point 2, the attacker constructs injection statements, injection statements and

PHP's MySQL extensions. Fortunately, by default, it is not allowed to execute multiple instructions in a single query; Attempting to execute two directives (such as the one shown above) will simply result in failure-no errors are set and no output information is generated. In this case, although PHP is just "behaving" to its default behavior, it does protect you from most simple injection attacks. The new mysqli extension (reference http://php.net/m

parameter value contains a single quotation mark, the single quotation mark is treated as a single quote character instead of the beginning and end character of the string. This eliminates the condition of the SQL injection attack in some way. code example: 1 static void Main (string[] args) 2 {3 String userName = "Joe"; 4 string Passwor D = "123456"; 5 6 String strconn = @ "Server=joe-pc;database=accountdbforsqlinjection;uid=sa;pwd=root"; 7 SqlConnection conn = new SqlConnection (strconn)

. Parameters.addwithvalue ("@nick", Nick); Cmd. Parameters.addwithvalue ("@sex", SEx); Cmd. Parameters.addwithvalue ("@bir", Bir); Cmd. Parameters.addwithvalue ("@nation", Nation); Cmd. Parameters.addwithvalue ("@cla", CLA); Cmd. Parameters.addwithvalue ("@uname", uname); Conn. Open (); Cmd. ExecuteNonQuery (); Conn. Close (); Console.WriteLine (

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.Configuration; Public Partial class_default:system.web.ui.page{protected voidPage_Load (Objectsender, EventArgs e) { } protected voidBtnlogin_click (Objectsender, EventArgs e) { stringName =txtUsername.Text; stringpass =Txtpass.text; Dataclassesdatacontext lqdb=NewDataclassesdatacontext (); varresult = fromVinchLqdb.tbuserwhereV.username = = name

Label:SQL injection is a way for a user to submit an SQL statement to the server via a client request Get or post, and spoof the servers to execute a malicious SQL statement. For example, the following SQL statement:1 " SELECT * from t_stuff where name = ' "+txtbox1.text+"";Where Txtbox1 is a TextBox control, we normally enter a name in this TextBox control to query the employee's information. However, if a user maliciously enters a concatenation string in this TextBox control, for example: "1 '

userConsole.WriteLine ("Please enter the vehicle code to be queried:"); stringCode =Console.ReadLine (); //Connecting ObjectsSqlConnection conn =NewSqlConnection ("server=.; Database=mydb;user=sa;pwd=123"); //Create Command ObjectSqlCommand cmd =Conn. CreateCommand (); //an SQL statement to the command object//make code= a variableCmd.commandtext ="SELECT * from Car where [email protected]"; //cmd.commandtext = "SELECT * from Car where [email protected] or [email protected]"; //chang

userConsole.WriteLine ("Please enter the vehicle code to be queried:"); stringCode =Console.ReadLine (); //Connecting ObjectsSqlConnection conn =NewSqlConnection ("server=.; Database=mydb;user=sa;pwd=123"); //Create Command ObjectSqlCommand cmd =Conn. CreateCommand (); //an SQL statement to the command object//make code= a variableCmd.commandtext ="SELECT * from Car where [email protected]"; //cmd.commandtext = "SELECT * from Car where [email protected] or [email protected]"; //chang