No, the RadCaptcha control does not filter certain (bad) words. The odds that such word will occur are extremely low, but to be sure, you could exclude the vowel letters from the character set, and keep only consonant letters and numbers. To specify custom char set for the RadCaptcha you should use the following properties:
- RadCaptcha.CaptchaImage.TextChars = Telerik.Web.UI.CaptchaPossibleChars.CustomCharSet
- RadCaptcha1.CaptchaImage.CharSet to the string of characters that the Captcha should use to generate the text code
Here is an online demo showing this functionality: http://demos.telerik.com/aspnet-ajax/captcha/examples/characterset/defaultcs.aspx
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items