Linked Questions
37 questions linked to/from Practical non-image based CAPTCHA approaches?
-2
votes
2
answers
718
views
Php avoid spam messages without captcha [duplicate]
Nowadays i'm getting too much of spam emails from my contact form, below is it's html view,
<form id="contactForm" action="processform.php" method="post" class="positioned" style="display: ...
- 241
0
votes
0
answers
100
views
Feedback form using VB Script - cut the SPAM [duplicate]
I have a simple Classic ASP feedback form that suffers from SPAM. All code is client side and I believe the idea is to hide the email address from the BOTS. While I understand the honeypot concept ...
- 31
175
votes
14
answers
75k
views
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
Have any programming methods have been used to defeat reCAPTCHA?
I'm interested in seeing evidence and potentially demonstrations that reCAPTCHA in particular has been made obsolete by completely ...
- 5,535
33
votes
10
answers
54k
views
Preventing bot form submission
I'm trying to figure out a good way to prevent bots from submitting my form, while keeping the process simple. I've read several great ideas, but I thought about adding a confirm option when the form ...
- 1,768
38
votes
13
answers
9k
views
Detecting a (naughty or nice) URL or link in a text string
How can I detect (with regular expressions or heuristics) a web site link in a string of text such as a comment?
The purpose is to prevent spam. HTML is stripped so I need to detect invitations to ...
- 73.4k
25
votes
9
answers
24k
views
Stop spam without captcha
I want to stop spammers from using my site. But I find CAPTCHA very annoying. I am not just talking about the "type the text" type, but anything that requires the user to waste his time to prove ...
- 303
12
votes
11
answers
4k
views
Are you human? (or How to prevent spam) [closed]
What mechanisms do you know that prevent your site from being abused by anonymous spammers.
For example, let's say that I have a site where people can vote something. But I don't want someone to spam ...
12
votes
13
answers
16k
views
PHP Captcha without session
Ok, here is an issue: in the project i'm working on, we can't rely on server-side sessions for any functionality.
The problem is that common captcha solutions from preventing robotic submits require ...
- 513
6
votes
14
answers
7k
views
How do I protect my forum against spam?
I have a forum on a website I master, which gets a daily dose of pron spam. Currently I delete the spam and block the IP. But this does not work very well. The list of blocked IP's is growing quickly, ...
- 58.5k
13
votes
10
answers
6k
views
How to Prevent SPAM without CAPTCHAs or a Centrally managed system (e.g. akismet)
Has anyone been able to successfully prevent spam on their site without placing a burden on your visitor (e.g. CAPTCHA) and without using a centralized spam reporting system (e.g. Akismet)
I've found ...
- 465
21
votes
5
answers
3k
views
Is there an Unobtrusive Captcha for web forms?
What is the best unobtrusive CAPTCHA for web forms? One that does not involve a UI, rather a non-UI Turing test. I have seen a simple example of a non UI CAPTCHA like the Nobot control from Microsoft....
- 2,158
6
votes
6
answers
1k
views
10
votes
3
answers
9k
views
Alternative to Recaptcha [closed]
Ours is a java web application on struts2 framework. Currently for contact us form and download reports form we are using Recaptcha. We have to refresh the captcha at least 4-5 times to get the ...
- 10.8k
7
votes
4
answers
4k
views
Stopping a bot attack server side solution (without a CAPTCHA or JavaScript)
I inherited some code that was recently attacked by repeated remote form submissions.
Initially I implemented some protection by setting a unique session auth token (not the session id). While I ...
- 72.6k
4
votes
4
answers
3k
views
should I limit attempts to login rails?
I'm thinking about building a login system for Ruby on Rails, much like this one
http://visionmasterdesigns.com/tutorial-create-a-login-system-in-ruby-on-rails/
In terms of security, should I limit ...
- 1,087