Wikipedia the definition of Spam is the following: is the abuse of elec-
tronic messaging systems (including most broadcast media, digital de-
livery systems) to send unsolicited bulk messages indiscriminately.
In other words is all the emails that we get saying useless information
most of them mostly offering promotion there are promotion and non
promotion. The most common know spam is the email spam, but there
are others types of spam not only that one.
The other types of spam are the following:
1 E-mail spam
2 Instant Messaging Spam
3 Newsgroup spam and forum spam
4 Mobile phone spam
5 Online game messaging spam
6 Spam targeting search engines (spamdexing)
7 Spam targeting real time search engines Spam Percentage Spam Percent-
8 Blog, wiki, and guestbook spam USA age around the
9 Spam targeting video sharing sites South Korea world
China according to
There is an easy way of solving spam in your computer you can select Russia
in your email account to not receive that type of email and you will stop Brazil
getting that type of email. Most spam are send from virus sites so they 5.20% France
are a danger to your computer. 1.90%
5% 4.90% Germany
2.30% 4.40% Turkey
2.40% 2.70% 3.40% 3.60% 3.70%
Passwords & Hacking
According to the dictionary a password is a secret
word or string of characters that is used for authen-
tication, to prove identity or gain access to a re-
Password are to avoid that people get to you ac-
count, passwords have to be easy to remind so in
most of the cases they are something personal that
only you know like for example you can put your
name and your date of birth. There are some solu-
tions if password is hacked or if you forget your
passwords like in msn. You can choose to email
your password to an alternate email of you have a
Hacking means to to write or refine computer
programs skillfully or to use's one skill in computer programming to gain illegal
unauthorized access to a file or network.
There are some problems with the passwords, this problem is that they can be
cracked either by brute force attack that involves trying as many possibilities as
time and money. In some cases such as msn passwords can be hacked by a
process which its called hijack. In some case people use an email in some ac-
counts as the administrators of the program saying that they need your pass-
word, that is always a fake email that is made for you to give the password so
you account can be hacked. The best way to avoid hacking is avoid weir web-
sites and to avoid telling someone your password.
A computer virus is a program that copy itself to a computer
and infects it. The term virus is used incorrectly in some cases
to describe malware, adware or spyware that are programs
that does not copy itself meaning it is not a virus. Virus only
spread from a computer to another, a virus can infect a net-
work system file or a file that can be accessed on a other com-
puter causing the computer to get the virus. Here are the type
of viruses that a malware contains:
Other malicious and unwanted software
The viruses can be easily avoided by anti-viruses such as
NOD32, Norton anti-virus, Panda security. Also making regular
backups of date can avoid viruses, so if the computer is af-
fected by a virus you have the backup and no information will
be lost .
The dictionary definition of firewall is the following: a firewall is part of a
computer system or network that is designed to block unauthorized ac-
cess while permitting authorized communications. The diagram on the
right can easily explain what a firewall is. A firewall is a running soft-
ware that inspects network traffic passing through it, this denies or per-
mits passage based on a set of rules. You can create your own set of
rules in your firewall, for example in some schools Facebook is not al-
lowed as well as other sites, this are rules that are established by the
administrator of the firewall. The first packet of firewall was made in the
year 1988.There are many types of firewall techniques:
Proxy server: intercepts messages entering and leaving network.
Application gateway: mechanism to specific application it is really effec-
tive but can reduce performance.
Circuit-level gateway: applies to TCP or UDP security mechanism.
Packet filter: inspect packets that pass through the network and it can
accept them or reject based on each user.
your ev s
Have ow safe i
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