User`s guide
If the spam score exceeds the threshold level, the e-mail is considered SPAM. The
threshhold level is defined by the antispam sensitivity level. For more information,
please refer to “Adjusting the sensitivity level” (p. 92).
The filter also detects messages marked as SEXUALLY-EXPLICIT: in the subject
line and tags them as SPAM.
Note
Starting May 19, 2004, spam that contains sexually oriented material must include
the warning SEXUALLY-EXPLICIT: in the subject line or face fines for violations
of federal law.
In-the-cloud detection
In-the cloud detection makes use of the Bitdefender Cloud services to provide you
with efficient and always up-to-date antispam protection.
E-mails are checked in the cloud only if the local antispam filters do not provide a
conclusive result.
17.1.2. Antispam operation
The Bitdefender Antispam Engine uses all antispam filters combined to determine
whether a certain e-mail message should get into your Inbox or not.
Every e-mail that comes from the Internet is first checked with the Friends
list/Spammers list filter. If the sender's address is found in the Friends list the e-mail
is moved directly to your Inbox.
Otherwise, the Spammers list filter will take over the e-mail to verify if the sender's
address is on its list. If a match is made, the e-mail will be tagged as SPAM and
moved in the Spam folder.
Else, the Charset filter will check if the e-mail is written in Cyrillic or Asian characters.
If so the e-mail will be tagged as SPAM and moved in the Spam folder.
The Link filter will compare the links found in the e-mail against the links from the
Bitdefender database of known spam links. In case of a match, the e-mail will be
considered SPAM.
Next, the Signatures filter checks the e-mail against the spam signatures in the
local database. If a match is made, the message is tagged as SPAM.
The NeuNet (Heuristic) filter will take over the e-mail and will perform a set of tests
on all the message components, looking for words, phrases, links or other
characteristics of SPAM. Based on the results of the analysis, the e-mail will receive
a spam score.
Antispam
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Bitdefender Internet Security 2013