3 chapter 3: computer software 1 security software basics security software is designed to protect...

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Chapter 3: Computer Software 1

Security Software Basics Security software is designed to protect computers from

various forms of destructive software and unauthorized intrusions

The terms malicious software and malware refer to any computer program designed to surreptitiously enter a computer, gain unauthorized access to data, or disrupt normal processing operations

A blended threat describes malware that combines more than one type of malicious program

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Security Software Basics Computer virus Computer worm

– self-replicating, spreads copies of itself to other computers via network

– Mass-mailing worm Trojan horse

– Keylogger

– Remote Access Trojan (RAT) Bot

– Attacker gains complete control of affected computer

– Zombie

– Botnet Spyware

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Security Software Basics What does malware do?

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Security Software Basics The term rootkit refers to software tools used to conceal

malware and backdoors that have been installed on a victim’s computer

A virus hoax usually arrives as an e-mail message containing dire warnings about a supposedly new virus on the loose

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Antivirus Modules Antivirus software is a type of utility software that looks for

and eradicates viruses, Trojan horses, worms, and bots– A virus signature is a section of program code, such as a

unique series of instructions, that can be used to identify a known malicious program, much as a fingerprint is used to identify an individual

– Virus signatures and other information that antivirus software uses to identify and eradicate malware is stored in one or more files usually referred to as virus definitions

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Antivirus Modules Most experts recommend

that you configure your antivirus software to periodically scan all the files on your computer

If, during the scanning process, your virus protection software identifies a virus, worm, Trojan horse, or bot in a file or attachment, it can try to remove the infection, put the file into quarantine, or simply delete the file


Can you name some popular antivirus software brands?

- Norton- McAfee- Trend Micro- Malwarebytes- Avast- AVG

3SECTION C


Buying SoftwareBuying Software Consumer Basics Software Copyrights and Licenses

3 Consumer Basics Most operating systems

include a handful of small applications and a good variety of useful utility software


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Consumer Basics A software suite is a collection of application software sold

as a single package

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Security Suites A security suite integrates several security modules to

protect against the most common types of malware, unauthorized access, and spam

A security suite often times costs less than purchasing standalone security modules

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Consumer Basics Available in many types of stores Software contained on distribution media Make sure your computer meets the system requirements

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Software Copyrights and Licenses

A copyright is a form of legal protection that grants the author of an original “work” exclusive rights

Software licenses define the ways in which you may use a computer program– Single-user– Site– Multiple-user– Concurrent– Shrink-wrap

3SECTION D


Installing Software and UpgradesInstalling Software and Upgrades Installation Basics Installing Local Applications Installing Portable Software and Web Apps Software Updates Uninstalling Software

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Installation Basics Software installation is a process that places a program into

a computer so that it can be run or executed

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Installing Local Applications

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Installing Portable Software and Web Apps

Portable software is designed to run from removable storage, such as a CD or USB flash drive– Installation is simply a matter of getting program files to

the media on which they are supposed to run

A Web application is software that is accessed with a Web browser– May require client-side program to be installed

3 Software Updates Software publishers regularly update their software

– Add new features– Fix bugs– Update security

Software patches replace part of the software you currently have installed

Service packs correct problems and address security vulnerabilities


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Software Updates Updates are usually available online for registered software

Always install patches and service packs when they become available

Many software publishers require users to type in a validation code to complete an update

3 Uninstalling Software Uninstall routines delete the

software’s files from the various folders on your computer’s hard disk


File Types, MS Word, and MS Excel

File Types/Extensions

.doc

Microsoft Word Document

Name that file extension!


.docx

Microsoft Word Open XML Document



.log

Log File



.rtf

Rich Text Format File



.csv

Comma Separated Values File



.ppt

PowerPoint Presentation



.gif

Graphical Interchange Format File



.pdf

Portable Document Format File



.xlsx

Microsoft Excel Open XML Spreadsheet



.exe

Windows Executable File



.msi

Windows Installer Package


Microsoft Word

Microsoft Word

• Word processing software • Commonly used for:

– resume creation– cover letter creation – documentation

• design documents• requirement documents• status reports

Can save a Word document in many different file types

RibbonBeginning with Office 2007 Microsoft began to utilize a “Ribbon”

• Contains toolbars• Arranged in tabs

Home tabAllows you to change thing like:- font (type, size, color, etc.)- bolding, italicizing, and underlining of text

Home tabIt also allows you to- change the text alignment (ex. center text)- change line spacing (ex. double spaced)- create bulleted, numeric, or outlined lists

Insert tabAllows you to insert thing like:- tables- pictures-shapes-charts

Inserting a tableClick on “Table”

Select how many rows and columns you’d like to start with by hovering over the blocks. Click when you have the number of blocks you want selected.

In this example I have selected 4 columns and 2 rows

Your table will be inserted into your Word document

You can select your entire table by clicking within it and then clicking the 4

arrow cross.

All cells will be highlighted once the entire table has been selected.

By right clicking on the selected table we are provided with a number of

options

We can insert more columns or rows, merge cells, etc.

By clicking on “Borders and Shading...” we are provided with additional options we can apply to our table.

We can change how our table’s borders appear or we can remove them completely

Microsoft Word Demo

Microsoft Excel

• Spreadsheet software • Commonly used for:

– performing calculations– forecasting– reporting– Analysis– documentation

• requirement documents• matrixes • charts

Microsoft Excel

• Allows a user to easily– sort data– filter data– perform “what if” analysis– auto-fill cells– drag and drop information

• Excel can have a connection to a database, thereby allowing it to pull data from it

Can save an Excel document in many different file types

Ribbon

Similar to the one in word

The “Home” tab allows us to easily change the formatting of numbers

A spreadsheet is made up of rows (represented by numbers), columns (represented by letters), and cells (represented by a letter/number combination

In this example the selected cell is C5

We can type information into a cell

More importantly we can type formulas into a cell

Once we enter the formula the cell displays the result of it.

Another formula example

A1:A5 is called a range of cells

The sum function is telling excel to sum the numbers in the specified range

Excel provides a ton of useful functions that

can be applied to data

Examples include:sum

averagemaxmin

ifyear

Microsoft Excel Demo

OpenOffice Demo

OpenOffice is an open source free office suite

Similar to Microsoft office it has applications for - Word processing- Spreadsheets- Presentations- Database- Drawing

LibreOffice Demo

LibreOffice is an open source free office suite

Similar to Microsoft office it has applications for - Word processing- Spreadsheets- Presentations- Database- Drawing

Google Docs Demo

3 chapter 3: computer software 1 security software basics security software is designed to protect...

Documents

computer software

software suite

software tools

virus protection software

type of utility software

terms malicious software

types of stores software

computer program