Now-a-days artificial intelligence is used in filtering spam from your inbox. This artificial intelligence filtering technology is used to adapt faster to the fast changing methods that are adopted by spammers. The software that is used to filter spam is made to learn the new methods that are adopted by the spammers so that it can filter out the new spam that come to your inbox. For this purpose the natural language processors are used. They are powerful algorithms that are used to scan your incoming messages and filter the spam. They come along with the mail filtering software.
These powerful algorithms in artificial intelligence read the messages and finds out the junk emails by analyzing the email content. Artificial intelligence techniques also look at the time at which the message was sent, the server address from where it was sent, and whether there is any other email like this that was sent earlier to the recipient. These factors are also considered before sending an email to trash. The steps that are involved in such a filtering are very simple.
The artificial intelligence filtering software is the first to receive all the emails that are sent to the corporate. It filters the emails, flags some email that are considered spam and sends it to a spam holding area. The genuine emails are sent to the email server through the firewall. An administrator to determine which emails are to be sent across to the email server can review the spam holding area. This update by the administrator is noted down by the software to process it in future. Thus artificial intelligence is used to filter spam from reaching even the firewall. The emails are scanned even before they reach the corporate firewall.
Different types of Anti-spam filters available
There are many types of anti spam filters available in the market. Based on how they work the filters can be categorized as Internet based spam filters, Statistical/Algorithmic spam filters, and General filters. In the Internet based filters the definitions on which the spam is filtered is available in the Internet on a remote server. Statistical / Algorithmic spam filters have the algorithms for filtering in the local machine itself. These filters are updated based on the training that your give to these software. The other type of filter called the general filters use the keywords that you feed and the email addresses that you have in your address book to filter the incoming emails. Based on the location of the filter we can categorize the anti spam filters in to Server side filters and Client side filters. As the name indicates, the server side filters reside in the mail server and the client side filters in the local machine. The client side filters come in to action only after the user downloads the emails.
Internet based spam filters
In these types of spam filters the definition for
the spam are held in a remote server. When the user
receives any email, that email is checked against
the spam definition that is held in the remote server.
If it is identified as spam then it is sent to the
spam folder or trash. Otherwise it is sent to the
Inbox. If the user gets any genuine mail as spam
then he can mark that as 'Not Spam'. This information
is updated in the definition. Any further email
from that address is sent to the inbox. Similarly
you can also mark some emails as 'spam'. This is
also updated in the definition. Since many users
are using the same spam definition the database
is updated faster and newer spam are also updated
There is also a negative side to this type of Internet
based spam filters. Suppose a user who has subscribed
to a service does not want to receive any emails
from them further, there is every chance for him
to mark it as spam. If he does so it will also affect
others and they will also not receive email from
that service provider. Spamnet and Matador are products
that work on this model.