spam-prevention

问题 A member of my company in greater ranking than myself refuses to use recaptcha.net on his website to thwart spam off of a public form. He thinks it would be difficult for anyone coming to our site to enter their information since the Turing Tests are "so darn hard to read". Is there an alternative to using this method? That doesn't contain these sorts of difficult to read images? (Okay stupid question...if it were up to me we'd use recaptcha because everyone else on earth does...but I just

问题 Are there ways except CAPTCHAs for web apps like pastie.org or p.ramaze.net? CAPTCHAs take too long for a small paste for my taste. 回答1: You could try Honeypot CAPTCHAs. Essentially, you hide some form fields using CSS. Your users will never fill out the fields because they won't see them, but spam bots who don't support CSS will fill them out. On the server side you just ignore comments/pastes/etc. that have that field filled out. In addition to honeypots, you can use timestamps and one-time

问题 A year or so ago I decided to stop using the mailto tag because many times it is annoying to the user. It will bring up an email program that the user may not be using at the time, which may also take time to load and may not be what the user wanted to do when he/she clicked on what looked like a link. Instead I decided to just start displaying the email address without the mailto tag. I believe that both ways probably can produce spam. My questions are these, Is the mailto tag the accepted

问题 I'm trying to come up with a JavaScript email obfuscator to reduce the chance for spam in emails listed on a web site. Right now I've got a JavaScript based obfuscator that uses a combination of HTML encoding & JavaScript to convert an obfuscated email into a normal email transparently. What I do is this: Format the "mailto:" part of the href in links to be HTML encoded like: mailto: I also encode the email, replacing the @ sign with (a) , so that the email reads something like: stackoverflow

问题 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, but so is the number of spam posts in the forum. The forum is entirely my own code. It is built in PHP and MySQL. What are some concrete ways of stopping the spam? Edit The thing I forgot to mention is that the forum needs to be open for unregistered users to post. Kinda like a blog comment. 回答1

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I want to check the SpamAssassin SPAM score of E-Mails including headers generated by a script from a WebApp. Therefore I need to run this mail through SpamAssassin to get the specific SPAM headers like: Yes, score=6.032 HTML_IMAGE_ONLY_24=1.282 HTML_MESSAGE=0.001 HTML_MIME_NO_HTML_TAG=0.635 MIME_HEADER_CTYPE

问题 My current honey pot on my registration form is an entry for phone number which is placed off screen using position: fixed; . It tricked a standard breed form filler, but doesn't work as well as I though. Also, the spambots immediately responded to changes in the form, meaning that this is automatic, what can I do. Note: I hate captchs since the make they users solve my problems which is never good. 回答1: Build a really smart honeypot That may seem obvious, but here are a few tricks(Details

问题 I hope this question wont be too specific. But I really need to ask. We all know that we cannot fully prevent our emails to go to spam box right? But I guess we can decrease the #of emails that goes there. Till now, I use PHP's built-in function mail() but I guess there are other methods right? What are they and what is your best practice for this prblem? Also is there a way to sending emails through Google Appspot? Thanks! 回答1: A hosted service may be a better way to go. They've developed

问题 I know that in first look many users mark this question as duplicate, but after reading more than 10 question I did not get any satisfactory answer, almost all question has answers having words like "There's not much you can do about it.", "I am not sure", "There is no sure shot trick" etc. that's why I am writing this question, and I think this is very generalized questions and every php developer faces it at least once, ok enough speech :) , now my question is.. I working on a project

问题 Is there a fast algorithm for finding the Largest Common Substring in two strings or is it an NPComplete problem? In PHP I can find a needle in a haystack: <?php if (strstr("there is a needle in a haystack", "needle")) { echo "found<br>\n"; } ?> I guess I could do this in a loop over one of the strings but that would be very expensive! Especially since my application of this is to search a database of email and look for spam (i.e. similar emails sent by the same person). Does anyone have any