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[description], Story, any other text you want to use.
Anti Trackback and Comment Spam Methods
by: Bobby Masteria
What is spam ?
Spam is text or URL, in one or several exemplars, neither being waited nor wished, not having, neither directly nor from its shipper, no relationship neither with the recipient nor with a possible
resource related to the recipient.
How does spam appears in blogs ?
Through the comments' body and commentator's URL.Through trackbacks' excerpt and permalink's URL
What are the anti-spam methods?
Authentication by connectionCAPTCHABlack ListBayesian Filter
Other methods to minimize spam :
Time Interval between submissions / Number of submissions per hour.DDD.Secure Form Mode : force page and submission to be manual.Rank Denial : Directs hyperlinks an intermediary server.Autoclose after N days: entry stops accepting comments or trackbacks.
Which data are analyzed by these methods ?
Active methods do analyze the shipper to check if it's:a spamer by coparing its IP address with blacklisted ones. authorized by authenticationa human by CAPTCHAPassive methods do analyze : comment's data:nicknameeMail addressURLmessagetrackback's data (concerning the shipping blog):blog's nameentry's titleentry's excerptpermalink's URL
What are the limits to these methods ?
Cross use of several of these methods allows excellent results concerning comments, but weak results concerning trackbakcs.
Difference between comments and trackbacks is that comments are sent from the recipient's blog, which allosw all above methods to be used, whereas trackbacks are sent from the shipping blog (this avoids the use and need of 2 interfaces).
- Consequently it's not possible to use CAPTCHA, authentication and Secure Form Mode methods with trackbacks.
- Another big problem, when all the trackback's data are unknown, especially the IP address, it is quite impossible to avoid spam, mainly because the blacklist and the bayesian filter are becoming inefficient.
- Last inconvenient, trackback autodiscovery is usefull for bookmarklets but also to spamers to who it gives the trackback URL.
Glimpse on futures anti-trackback-spam methods
radio shack
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Until recently, people used a technique called symmetric key cryptography to secure information being transmitted across public networks in order to make radio shack shopping more secure. This method involves encrypting and decrypting a radio shack message using the same key, which must be known to both parties in order to keep it private. The key is passed from one party to the other in a separate transmission, making it vulnerable to being stolen as it is passed along.
With public-key cryptography, separate keys are used to encrypt and decrypt a message, so that nothing but the encrypted message needs to be passed along. Each party in a radio shack transaction has a *key pair* which consists of two keys with a particular relationship that allows one to encrypt a message that the other can decrypt. One of these keys is made publicly available and the other is a private key. A radio shack order encrypted with a person's public key can't be decrypted with that same key, but can be decrypted with the private key that corresponds to it. If you sign a transaction with your bank using your private key, the bank can read it with your corresponding public key and know that only you could have sent it. This is the equivalent of a digital signature. While this takes the risk out of radio shack transactions if can be quite fiddly. Our recommended provider listed below makes it all much simpler.
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