yahoo mail verification code bypass

Let's start with the analysis, the process of verifying code release1, displaying the form2, display the Verification code (the program that generates the code), encrypt the captcha and put it in session or cookie.3, the user submits the form4, check the verification

Http://www.4.cn gold network through the verification code on the brute force cracking prevention, when you log on to an account with a wrong password, you need to enter the verification code to log on again. Many developers also use the verification

Digital mail, telephone, fax, zip code, address verification code # Region verify that the input string is a number/// /// Verify that the input string is a number/// /// /// Public bool validatenum (string p_str_num){Return regex. ismatch (p_str_num, "^ [0-9] * $ ");}# Endregion # Region

Today suddenly want to write a user to change the password function, and no SMS interface, can only choose to send verification code with the mailbox, poor Ah, no way, haha, the following is the text.--------------------------------------------------------------------------------------------------------------- ---------------------------------------------1. Preparatory work(1) Download Phpmailer, plugin,: L

Digital Mail Telephone Fax ZIP code address Verification Code #region Verify that the input string is a numberVerify that the input string is a numberpublic bool Validatenum (string p_str_num){Return Regex.IsMatch (P_str_num, "^[0-9]*$");}#endregion #region Validate input string as phone number /// ///Valida

Extjs4.2 + Spring4.0 + SpringMVC + Hibernate4.3 + Shiro + mail + verification code, extjs4.2springmvc Extjs4.2MVC open source project Introduction 1: this open-source project adopts the main framework of Extjs4.2 + Spring4.0 + SpringMVC + Hibernate4.3 + Shiro1.2.3 + mail1.4.1 + FusionCharts + verification

Email email Verification if (document.regform.u_email.value.length==0) {Alert ("Hint: please fill in your email address");Document.regform.u_email.focus ();return false;} else if ((Document.regform.u_email.value.indexof ("@") {Alert ("Hint: you fill out the email is invalid, please fill in a valid email");Document.regform.u_email.focus ();return false;} QQ Number Verification Codeif (document.regfo