Linked Questions

6
votes
2answers
1k views

How to protect a form from spam? [duplicate]

I have compiled a list of items that may protect a web form from span. Which are actually effective? Please feel free to add additional items. Store a code as a hidden field and verify it when ...
1
vote
3answers
523 views

Best way to block "comment spam" postings to web forms? [duplicate]

Possible Duplicate: Make your site anti-bot? I have a custom web form on my PHP-based site. Recently it is getting a regular stream of comment-spam postings from a few specific IP addresses. ...
1
vote
1answer
187 views

Need help for stopping spam inquiries [duplicate]

Possible Duplicate: Make your site anti-bot? I am not a web developer, nor have I the required knowledge to grasp this situation. I have a small company with a modest web site where I market ...
1
vote
0answers
42 views

What's a good way to keep spam out of 'anonymous' submission websites? [duplicate]

Possible Duplicate: Make your site anti-bot? I'm trying to do everything I can to prevent spammers from just pasting crap all over my forum websites. People get incentivized by video games and ...
45
votes
4answers
21k views

How do spambots work?

I have a forum that's getting hit a lot by forum spambots, and of course the best way to defeat something is to know thy enemy. I'll worry about defeating those spambots later, but right now I'd like ...
8
votes
3answers
2k views

Prevent spam using Honey Pots

I am really curious about how to prevent comment spam in a forum using a honey pot trap for spam bots. What if CSS and javascript is turned off in a browser? Do you see any other disadvantages in ...
2
votes
3answers
362 views

POST attack on my website

I have a site (humanisms.co.uk) which incorporates a voting system, ie. user clicks "Up" and it sends a parameter to a PHP script via AJAX, the PHP inserts vote into MYSQL db and the new "Up" vote is ...
2
votes
1answer
926 views

How to report spam sent through my website contact form without blocking it? [duplicate]

Despite the Google captcha protection I receive some spam from my website contact forms. I want to report these spams but without blocking my contact form address. Explaination: when somebody send ...
3
votes
4answers
281 views

Removing CAPTCHA is harmful for my forms?

I have some services on my site that developed by PHP , it seems having CAPTCHA in my registration form is decreasing registering users , I tend to remove CAPTCHA at least on my registering form , is ...
3
votes
1answer
249 views

User registration usability vs security

What are cons and pros of the following: asking to repeat password asking to have a certain length-password asking to repeat e-mail address using captcha sending confirmation e-mail what do you ...