Computer Software

What is open source software?       
Open-source software (OSS) is computer software that is available in source code form for which the source code and certain other rights normally reserved for copyright holders are provided under a software license that permits anyone to study for any purposes.
In your opinion, why people prefer open source software over proprietary alternatives nowadays?
In my opinion, people prefer open source software over proprietary alternatives nowadays because of open source software are mostly free. Proprietary alternative software like Microsoft Office is costly. Besides that, it is always legal to use open source software in any way. Proprietary alternative software is tend to be cracked and illegally used. Furthermore, open source software will continue to develop as the people contribute. Proprietary alternative software are closed source software and will not continue to develop if the company that makes the closed source software are down.
Name top (fives) 5 most popular open source software and compare them with similar proprietary software


OPEN SOURCE SOFTWARE VS NORMAL SOFTWARE
COMPARISON
Wordpress vs Blogger

Wordpress is free blog that have premium upgrades but for Blogger, there are no upgrades.
Wordpress has a variety of customization options compared to Blogger.
Audacity vs Logic Studio
The most obvious difference is the cost they come with.
We can get Audacity for free but to have Logic Studio, we have to spend $499.
Audacity can support audio formats like AAC, AAIF,FLAC and more but the Logic Studio cannot support these kind of audio formats.
PDFCreator vs Adobe Acrobat
PDFCreator can create PDFs from any program that is able to print but not Adobe Acrobat.
PDFCreator can also create other files besides PDF such as PNG, JPG, TIFF, BMP and more but Adobe can only create PDF files.

GIMP vs Adobe Photoshop
GIMP will run on any hardware, and is compatible with OS X, Windows, and even Unix. GIMP also provides a portable version which fits on a thumb-drive so that you can use it on any computer.
Photoshop has more training options. Photoshop offers Pantone colours which standardizes print and digital colours which is not provided in GIMP.
Google Chrome vs Internet Explorer
Google chrome is faster in web browsing. Google chrome also has a nice and simpler layout which makes it easier to understand.
Internet explorer is very slow and very old but Microsoft made and released a new one called Internet Explorer 10 for Windows 7 which is faster than the other ones before. But still, Internet Explorer has not yet reached the satisfaction of the users.



Discuss different types of threats and malicious program (malware) that can damage a computer, mobile device or disrupt any system.   Search for information on current known malware program. Based on the information that you have found, create a table to list different types of malware, what it does, and how it can be repaired or removed. These information is useful for you to prevent any malware from damage your computer system
Malware
What it does?
How to repair or remove?
Spyware
·         Example : Keylogger photo Spyware_zps9d682354.png
Monitors your movements on the Internet.
Send information back to a central computer that then targets you with advertising.
Computer slows down to a useless state. Lots of lagging during browsing.

Install anti-spyware software like SUPERAntiSpyware
Trojan Horse
·         Example : Stuxnet
 photo Trojan-Horse_zps98b836de.png
Trojans can delete data, compromise security, relay spam or porn and otherwise infect your computer.
Copies itself into external storages and network and change the folders to shortcut.

Download and run shortcut virus remover
Virus
·         Example such as Sality.AA


 photo Virus_zps2e3af045.png
Taking control over some or all of its function like files with EXE and SCR extensions. The virus destroys data or looks for things like passwords, credit card numbers, or other sensitive data. The information is often sent to another computer.

Download and run Win32: Sality Removal Tool
Worm
·         Example such as Brontok.A

 photo Worm_zps1b7b4eee.png
Worms often arrive via email, peruse your address book, and then send a copy of themselves to others in your address book, masquerading the message as though it is from you.
Worms are used to deliver viruses, or the worm itself might be a virus

Download and run Brontok Removal Tool
Rootkit
 photo Rootkit_zpsfcdfe1f9.png
Types of malicious software designed to remotely access or control a computer without being detected by users or security programs.

manual methods such as monitoring computer behavior for irregular activity, signature scanning, and storage dump regularly patching vulnerabilities in software, applications, and operating systems, updating virus definitions, avoiding suspicious downloads, and performing static analysis scans.analysis.