Transcript E-Mail Address

Computer Skills 2
for Humanities
E-Mail (Electronic Mail)
Definition

E-mail:
- Shortcut for (Electronic mail) . ‫إختصار ل‬
-Electronic Mail service.‫خدمة المراسالت اإللكترونية‬
- Likes a Normal Mail service. ‫تشبه البريد العادي‬
- A method of connection between people in the
world. ‫وسيلة للتواصل بين الناس في أنحاء العالم‬
- The connection : is by ability to send and receive
messages between people in the internet. ‫التواصل عن‬
‫طريق القدرة على إرسال رسائل‬
- Ability to send and receive attachments.
‫القدرة على إرسال ملفات على شكل ملحقات مع نص الرسالة‬
- Each sender and receiver has to have an Email
Address ‫كل مرسل أو مستقبل يجب أن يملك عنوان لبريد إلكتروني‬
E-mail basic work
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Using SMTP (Simple Mail Transfer Protocol) for
sending messages.
This protocol establishes a connection to an E-mail
server (like Yahoo or Hotmail) that the receiver deals
with it , and then send the message.
The sending message is stored in the receiver inbox
in the Email Server by using his e-mail address, until
he becomes Online and Reads his Email.
The sending time for the message is not more than
20 seconds and depends on the network load.
E-Message Contents
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Likes a traditional mail message.
Consists of:
1. Introduction:
- Sender and receiver address.
- Sending Time.
- Message Subject.
2. Message Body: written text.
3. Attachments: Files, pictures, documents,…etc.
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‫ كتابة الرسالة‬‫ كتابة عنوان المرسل‬‫ إرسال الرسالة‬‫ ستذهب الرسالة الى ‪ Server‬شركتك المزودة للخدمة‬‫ ستتحقق من صحة عنوان الرسالة‬‫ ستحدد المسار الذي ستسير به حتى تصل الى‬‫‪ Server‬المستقبل للرسالة‬
‫ ستخزن في بريده الخاص الموجود على ال‪Server‬‬‫ عندما يستطيع قراءتها في أي وقت سيفتح الرسالة‬‫ويقرأها‬
E-Mail Address
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The general construction:
User_Name @ Host_Name.Domain
<[email protected]>
Where:
-User_Name: User address.
-Host_Name: Host Name.
E-Mail Server Name or company name (Yahoo,
Hotmail, Gmail…etc.)
- Domain: Network Type.
- You can find the Country symbol in the last position
of the address (.JO, .UK, .SY ……)
E-Mail Address (cont.)
Domain type
Com
Description
Commercial companies
Edu
Educational Foundations
Gov
Government Foundations
Mil
Military Foundation
Net
Network Services Companies
Org
Organizational Foundations
Int
International Foundations
E-Mail Types
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Web mail:
is a traditional E-mail, and used by any
browser (ex. Yahoo, Hotmail web mail).
Forwarding mail:
is used to send a message from one address
to another through Forwarding mail.
it is a suitable sending method for any user
who not want to reveal his address.
‫‪ ‬مثال ‪:‬‬
‫ إذا كان لديك إيميل ال ‪ ، Forwarding‬والجميع يراسلك عليه‬‫‪ ،‬ويقوم هذا البريد بتوصيل تلك الرسائل إلى بريد آخر لك ‪ ،‬أي‬
‫أن الشخص الذي أرسل لك رسالة بريدية ال يعرف عنوان بريدك‬
‫الحقيقي‪.‬‬
‫‪POP3 Mail (Post Office Protocol):‬‬
‫‪like the Web mail, but is differ from it by using‬‬
‫‪special applications like MS Outlook.‬‬
The E-mail Risks
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Spam Messages:
‫ أي رسالة إلكترونية ال ترعب باستقبالها‬: ‫السبام‬
Spam is flooding the Internet with many
copies of the same message, in an attempt to force
the message on people who would not receive it.
 Most spam messages are:
-Commercial advertising.
-News messages.
-Questioners.
-etc.
How Email spam targets individual users
with direct mail messages?
Email spam lists are often created by:
1.The Revealing of E-mail address for the
user.
‫أنت تكشف عن عنوان بريدك عن طريق وضعه في صفحات‬
‫ المنتديات‬، ‫ األخبار‬، ‫ اإلعالنات‬، ‫ المجالت‬، ‫المزادات العلنية‬
2. Stealing Internet mailing lists.
3. Searching the Web for addresses using
special software (Rolling addresses
randomly).
4. Selling the your Address by some
companies to spammers
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E-Mail Risks-Hackers
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Hackers:
Hacker is a term used by some to mean "a
clever programmer" and by others, especially
those in popular media, to mean "someone
who tries to break into computer systems."
‫أشخاص يحاولون الوصول الى معلومات إلكترونية بطرق غير‬
‫شرعية‬
How to protect our system
from spammers and hackers?
A- Using Antivirus software:

there are Two Types:
- Programs that located in User’s Personal
Computer.
- Programs that located in free web sites.
Antivirus applications in user’s PC:
1. Norton Antivirus.
2. Mcafee.
3. PC-cillin.
How to protect our system
from spammers and hackers?

Antivirus applications in free web sites:
1. Symantec Security Check.
2. HouseCall.
‫لكن ال يمكن إستخدام هذا النوع اال عندما نعمل على الشبكة‬
B- Using Firewall:
A system designed to prevent unauthorized
access to or from a private network.
Firewalls
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Firewalls are frequently used to prevent
unauthorized Internet users from accessing
private networks connected to the Internet.
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All messages entering or leaving the Internet
pass through the firewall, which examines
each message and blocks those that do not
meet the specified security criteria.
How to defend ourselves from
Spammers and Hackers?
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From Spammers:
1. Don’t give your E-mail Address except to your
closed Friends.
2. Don’t open any Junk E-mail messages with
unknown address.
3. Don’t open any E-mail Attachments with unknown
address.
4. Use Anti-spam Tools that supported by the E-mail
Applications.
5. Unsubscribe from commercial and general Email
lists, and unwanted groups.
How to defend ourselves from
Spammers and Hackers?
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1.
2.
3.
4.
From Hackers:
Don’t put your Personal IP address on any
website.
Ensure that your antivirus program is active
and updated always.
Disconnect the connection to internet when
you not need it.
Use a good and effective firewall