1
<?xml version="1.0" encoding="UTF-8"?>
2
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3
"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
4
<!ENTITY % globalent SYSTEM "../../../libs/global.ent">
6
<!ENTITY % cdo-C SYSTEM "../../../libs/cdo-C.ent">
8
<!ENTITY % kde SYSTEM "../../../libs/kde.ent">
10
<!ENTITY % kde-menus-C SYSTEM "../../../libs/kde-menus-C.ent">
12
<!ENTITY % kde-general SYSTEM
13
"/usr/share/apps/ksgmltools2/customization/obsolete/general.entities">
15
<!ENTITY % xinclude SYSTEM "../../../libs/xinclude.mod">
17
<!ENTITY language "en">
19
<article id="keep-safe" status="complete">
21
<title>Keeping Your Computer Safe</title>
25
This section describes how to keep your computer safe from security threats.
30
<sect1 id="keep-safe-updates" status="complete">
31
<title>Keeping your computer updated</title>
34
Refer to <ulink type="help"
35
url="help:/kubuntu/add-applications">Updates</ulink> under the <emphasis>Adding
36
Applications</emphasis> documentation.
42
<sect1 id="keep-safelock-screen" status="complete">
43
<title>Lock your screen while away</title>
46
Locking your screen prevents other people from accessing your computer while you
47
are away from it. All of your applications and work remain open while the screen
48
is locked, and the screensaver is displayed.
52
You can lock your screen in one of the following ways:
68
to lock the screen. This keyboard shortcut can be changed in
69
<application>System Settings</application> under the <guilabel>Keyboard &
70
Mouse</guilabel>. To access this go to &menukbandmouse; and under the
71
<guilabel>Keyboard Shortcuts</guilabel> section, <guilabel>Global
72
Shortcuts</guilabel> tab, locate the <guilabel>Lock Session</guilabel> under
73
<guilabel>Desktop</guilabel>.
82
You can add a <guibutton>Lock Screen</guibutton>
83
button to the <application>Kicker</application> for easy access. Right-click
84
the <application>Kicker</application>, select <guibutton>Add Applet
85
to Panel...</guibutton> and select the <guibutton>Lock/Logout
86
Buttons</guibutton> item, and then press the <guibutton>Add to
87
Panel</guibutton> button.
92
To unlock the screen, move the mouse or press a key. Then, type your password
93
and either press the <keycap>Return</keycap> key or press the
94
<guibutton>Unlock</guibutton> button.
98
If more than one person has a user account on your computer and the screen is
99
locked, other users can press the <guibutton>Switch user...</guibutton> button
100
to use the computer, even while the screen is locked. They will be unable to
101
access your currently-open work, and you will be able to switch back to your
102
locked session when they have finished using the computer.
107
<sect1 id="keep-safe-firewall" status="complete">
108
<title>Set up a firewall</title>
111
<application>Guarddog</application> is the firewall of choice for KDE. Please
112
review the <ulink type="help" url="help:/kubuntu/network/">Networking</ulink>
113
documentation and locate the <application>Guarddog</application> section.
118
<sect1 id="keep-safe-avoid-internet-crime" status="complete">
119
<title>Avoid Internet nuisances and crime</title>
121
<para>From time to time, you may be sent an email which carries a
122
virus or links to a fraudulent website. This type of email is very common, and
123
it is important to learn how to deal with it, in order to prevent your computer
124
or your personal details from being compromised or misused.
128
Such messages are often received from total strangers. However, sometimes an
129
email may appear to be from someone you know, when really it is not. This is
130
because it is possible to include a fake sender email address in emails.
134
Unwanted (unsolicited) mail tends to fall in to one of several categories:
139
Spam (junk) email, where people offer unwanted services and products
145
Scam emails, where people pretend to ask for help in exchange for large sums of
152
Phishing email, where the message appears to be from a bank or other online
153
service, asking you to enter your personal and financial details, or passwords.
158
<para>Below are some tips for keeping safe online:</para>
163
You should never reply to unsolicited mail, or even click on the links in the
164
mail. Doing so usually results in more junk mail being sent to you.
170
Never click on links in emails which lead to websites asking for your password
171
or similar. It is possible for the text of the link to give one address, when
172
really it opens up another (possibly dangerous) address. Instead, type the link
173
into your web browser yourself and proceed from there.
179
When visiting a website that asks for your financial information, ensure that
180
it is secure. In <application>Konqueror</application> and in
181
<application>Firefox</application> there are two areas that will provide
182
notification if the current page is secure. The first area is the address bar.
183
If the page is a secure page, the address bar will have a yellow background as
184
well as a lock to the right of the address. The second area is the status bar
185
which is located at the bottom right of each browsers window. If the page is a
186
secure page, a lock will appear in this area. Clicking on either of the locks
187
will provide you with a dialog that will explain in detail the type of licensing
188
and security for that page.
194
Only download and run software from sources that you trust. By default, you can
195
only download software directly from Ubuntu.
202
<sect1 id="keep-safe-backup-files" status="complete">
203
<title>Make backup copies of your files</title>
206
A problem which you may occasionally encounter is the unexpected loss of some of
207
your work and settings for one reason or another. The causes of such
208
<emphasis>data loss</emphasis> are many and varied; it could be anything from a
209
power cut to accidentally deleting a file. It is highly recommended that you
210
make regular back-up copies of your important files so that, if you do encounter
211
a problem, you will not have lost those files.
215
It is wise to store back-up copies of files separately from
216
your computer; that is, you should make use of some form of file storage which
217
is not permanently attached to your computer. Options include:
220
<listitem><para>Writable CDs and DVDs</para></listitem>
221
<listitem><para>External hard disks and flash memory devices</para></listitem>
222
<listitem><para>Another computer on the network</para></listitem>
226
A simple way of backing-up your files is to manually copy them to a safe
227
location (see above) by using <application>Konqueror</application>.
231
Alternatively and the preferred way, is that you can use
232
<application>Keep</application>, the dedicated KDE backup solution. Access
233
<application>Keep</application> by going to &menukeep;.