After reviewing my post Backtracking Emails I felt that I had missed to say something about Spams.., so here I'll be talking completely about spams, how it is made, why it is made and how to avoid it...!!!
Spam involving nearly identical messages sent to numerous recipients by email. Clicking on links in spam email may send users to phishing web sites or sites that are hosting malware. Spam email may also include malware as scripts or other executable file attachments. Definitions of spam usually include the aspects that email is unsolicited and sent in bulk.
How do they get my Email Id
Spammers collect email addresses from chatrooms, websites, customer lists, newsgroups, and viruses which harvest users' address books, and are sold to other spammers. They also use a practice known as "email appending" or "epending" in which they use known information about their target (such as a postal address) to search for the target's email address. Much of spam is sent to invalid email addresses. Spam averages 78% of all email sent. According to the Message Anti-Abuse Working Group, the amount of spam email was between 88–92% of email messages sent in the first half of 2010...!!!
How do they Spam
a. Appending: Similar to a telephone directory, here One will have the list of Name, Email Id and many more personal information's of clients. A spammer will get those details officially or unofficially...!!!
b. Image spam: This is one of the serious issue where texts and messages are stored in the attractive(erotic/beautiful/pornographic ) images and those images are uploaded to the popular websites, the one who clicks on it will be exploited by spammer as he can steal the host cookie..!!!
c. Blank spam: Blank spam is spam without any payload advertisements, but still it fits the definition of spam because of its nature as bulk and unsolicited email...!!!
So what are the effects of Spam
a. Every time a "spammer" sends out email spam, the entire Internet community has to bear the cost, in particular the recipients and the ISPs at the receiving end. It wasted a lot of recipients' time and disk space... :(b. Spam also ties up bandwidth and resources on computers and routers all over the Internet. Every unwanted email message adds to the total cost of operating the networks of computers which form the Internet. Spam can disrupt a network by crashing mail servers and filling up hard drives. Spam also constitutes an invasion of Internet users' online privacy... :(
c. On the other hand, if any servers or organizations / institutes being classified as SPAM sites, others may not be able to receive normal emails from these sites... :(