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| Subject: | RE: Script Based Attacks & Form Hacks |
|---|---|
| Date: | Fri, 22 Jul 2005 17:53:53 +0300 |
2) This type are a little harder to foil. However not impossible. For external facing applications, I always send an email for validation/verification. Till the user authenticates his/her address, I keep the form data in a temporary table. The enteries in the temp table have a life time of 1 hour, after that they get deleted. Also make the email address / IP address the primary key in your temp table. This will prevent one single machine from filling up the temp table. It would have to be DDOS attack to fill up the TEMP table. But then again, I set a max limit on the number of entries in the temp table.
You cannot limit by IP ... there are a lot of cases when hundreds of users are under one single IP ... like AOL members ... - Serghei
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