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Shaira Ibel Gamueda
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PostSubject: Computer Virus   Sat Aug 11, 2018 8:33 pm

Computer Virus

A computer virus is a malicious program that self-replicates by copying itself to another program. In other words, the computer virus spreads by itself into other executable code or documents. The purpose of creating a computer virus is to infect vulnerable systems, gain admin control and steal user sensitive data. Hackers design computer viruses with malicious intent and prey on online users by tricking them.

Types of Computer Virus

1. Resident viruses:
                         These are permanent viruses dwelling in RAM memory. In this case, they would be in a position to overcome, as well as interrupt, all operations that the system executes. Their effects include corrupting programs and files that are closed, opened, renamed or copied.

2. Overwrite viruses:
                          These viruses delete information that is in the infected files. In this case, the infected files would be rendered totally or partially useless. Unfortunately, you would only clean the infected file by deleting it completely, therefore losing original content.

3. Direct action viruses:
                          This virus replicates itself, then acts when executed. Subject to satisfaction of particular conditions, the virus infects files located in the folders or computer directory. It is also in directories specified in the AUTOEXEC.BAT PATH. In most cases, it is located in hard drive’s root directory and takes particular action when the computer boots.

4. File Infector:
                            This virus infects executable files or programs. On running the programs, the virus would be activated, then be able to carry out its damaging effects. Most of the existing viruses are in this category.

5. Macro virus:
                             This virus affects files created using particular programs or applications containing macros. The mini-programs increase their ability to automate some operations, in which case they would be performed as single actions. The user would therefore be saved the trouble of executing them singularly.

6. E-Mail Virus:  
                             Worth listing even if most are Macro viruses.  Generally these kinds of viruses infect computers through social interaction with someone who e-mails the end user.  They may be asked to verify a billing statement or look at an invoice attachement.  Upon opening the attachment the macro is fired off and runs and infected the computer.  Most macro viruses are easily stopped by simply keeping software up to date on computers.

7. Ransomware:  
                              Ransomware is type of malicious software product that attempts to hold a computer for ransom. This might be locking files, hiding files, changing permissions on files or encrypting files.
                              In early ransome attacks, files where often simply hidden from the viewers and a monetary payment was requested to un-do the changes.  This kind of attack was rather simple to resolve by doing a system restore to un-do the changes to those files.

8. Browser Highjacks:
                                 The most common types of viruses seen in 2014 – 2015 that have a high impact on users are Browser Highjack viruses.  Generally this type of infection is not really a virus but something called PUP or Potentially unwanted software.  In most cases these browser highjacks change the users home page and search settings in the web browser and often make it extremely hard to remove and restore the default settings.  Often times these kinds of browser highjacks get installed from bundled software that may include free programs such as computer games or wall papers.
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Jerson



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PostSubject: Re: Computer Virus   Sun Aug 12, 2018 9:13 pm

What kind of virus is shortcut virus?
When i plug a flash drive it will become a shortcut
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Mon Aug 13, 2018 7:21 pm

Hi Jerson! Shorcut Virus that you may usually found in your flashdrive is a worm and trojan combined that hides all of your files and folders, then replaces them all with shortcuts that look exactly the same. You end up running malware that duplicates the virus and further infects your system, leading to stolen personal data and leads to data loses.
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Jerson



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PostSubject: Re: Computer Virus   Mon Aug 13, 2018 7:32 pm

How can i remove the virus?
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Mon Aug 13, 2018 7:59 pm

The easiest way to remove a shortcut virus in your flashdrive are the ff:

First, open the Command Prompt in your PC. Or simply press windows key + R. The dialog box will appear. And then type, CMD.
See the attach link:
http://technicalnotes.org/wp-content/uploads/2015/09/Cmd-Windows-Key-R.png

Second, type the attrib -h -r -s /s /d e:\*.* Then Click ENTER. (You must know your letter drive before typing this. The letter e is the letter drive of your flashdrive.)
See the attach link:
https://redicals.com/wp-content/uploads/2013/12/remove+shortcut+virus.png

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sirjosh



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PostSubject: Re: Computer Virus   Tue Aug 14, 2018 1:54 pm

what is the most dangerous virus in computer?
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Wed Aug 15, 2018 10:28 am

Did you know ILOVEYOU computer virus? It is one of the most dangerous virus that had studied so far. But as of now, there so many dangerous computer viruses compared to this. But, let's talk about this because it is originated from the Philippines. The Iloveyou Virus managed to wreck PCs across all over the world. It is a Love Letter, and was a computer worm. It is spread by e-mail, arriving with the subject line "ILOVEYOU" and an attachment, "LOVE-LETTER-FOR-YOU.txt.vbs".
Click the attached link to see photo: https://sites.google.com/site/is102projectv1/_/rsrc/1436015325973/viruses/i-love-you-virus/i_love_you_virus_nerdeky.jpg

If this was opened, a Visual Basic script was executed, and the computer was infected. Once executed, the script then e-mailed itself to everyone in the victim's contact list, edited the Registry to execute the worm, and replaced the data in many computer files, including images and photos files and Word documents, with copies of itself.

Unfortunate news for all of us is that there is not just one most dangerous virus but a lot such as 1. Stuxnet, 2. Conficker Virus and 3. Agent.btz that originated from different countries.
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glocellmejares



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PostSubject: Re: Computer Virus   Thu Aug 16, 2018 8:56 am

How to prevent viruses?
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Lyka Janine Adap



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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 2:21 pm

How do you check if your computer has a virus?
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Lyka Janine Adap



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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 2:21 pm

How do you stop a virus once you discover you have one?
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 5:51 pm

glocellmejares wrote:
How to prevent viruses?


Hello there. Here are some tips to avoid computer viruses:

1: Install quality antivirus
Many computer users believe free antivirus applications, such as those included with an Internet service provider's bundled service offering, are sufficient to protect a computer from virus or spyware infection. However, such free anti-malware programs typically don't provide adequate protection from the ever-growing list of threats.

Instead, all Windows users should install professional, business-grade antivirus software on their PCs. Pro-grade antivirus programs update more frequently throughout the day (thereby providing timely protection against fast-emerging vulnerabilities), protect against a wider range of threats (such as rootkits), and enable additional protective features (such as custom scans).

2: Install real-time anti-spyware protection
Many computer users mistakenly believe that a single antivirus program with integrated spyware protection provides sufficient safeguards from adware and spyware. Others think free anti-spyware applications, combined with an antivirus utility, deliver capable protection from the skyrocketing number of spyware threats.

Unfortunately, that's just not the case. Most free anti-spyware programs do not provide real-time, or active, protection from adware, Trojan, and other spyware infections. While many free programs can detect spyware threats once they've infected a system, typically professional (or fully paid and licensed) anti-spyware programs are required to prevent infections and fully remove those infections already present.

3: Keep anti-malware applications current
Antivirus and anti-spyware programs require regular signature and database updates. Without these critical updates, anti-malware programs are unable to protect PCs from the latest threats.

In early 2009, antivirus provider AVG released statistics revealing that a lot of serious computer threats are secretive and fast-moving. Many of these infections are short-lived, but they're estimated to infect as many as 100,000 to 300,000 new Web sites a day.

Computer users must keep their antivirus and anti-spyware applications up to date. All Windows users must take measures to prevent license expiration, thereby ensuring that their anti-malware programs stay current and continue providing protection against the most recent threats. Those threats now spread with alarming speed, thanks to the popularity of such social media sites as Twitter, Facebook, and My Space.

4: Perform daily scans
Occasionally, virus and spyware threats escape a system's active protective engines and infect a system. The sheer number and volume of potential and new threats make it inevitable that particularly inventive infections will outsmart security software. In other cases, users may inadvertently instruct anti-malware software to allow a virus or spyware program to run.

Regardless of the infection source, enabling complete, daily scans of a system's entire hard drive adds another layer of protection. These daily scans can be invaluable in detecting, isolating, and removing infections that initially escape security software's attention.

5: Disable autorun
Many viruses work by attaching themselves to a drive and automatically installing themselves on any other media connected to the system. As a result, connecting any network drives, external hard disks, or even thumb drives to a system can result in the automatic propagation of such threats.

Computer users can disable the Windows autorun feature by following Microsoft's recommendations, which differ by operating system. Microsoft Knowledge Base articles 967715 and 967940 are frequently referenced for this purpose.

6: Disable image previews in Outlook
Simply receiving an infected Outlook e-mail message, one in which graphics code is used to enable the virus' execution, can result in a virus infection. Prevent against automatic infection by disabling image previews in Outlook.

By default, newer versions of Microsoft Outlook do not automatically display images. But if you or another user has changed the default security settings, you can switch them back (using Outlook 2007) by going to Tools | Trust Center, highlighting the Automatic Download option, and selecting Don't Download Pictures Automatically In HTML E-Mail Messages Or RSS.

7: Don't click on email links or attachments
It's a mantra most every Windows user has heard repeatedly: Don't click on email links or attachments. Yet users frequently fail to heed the warning.

Whether distracted, trustful of friends or colleagues they know, or simply fooled by a crafty email message, many users forget to be wary of links and attachments included within email messages, regardless of the source. Simply clicking on an email link or attachment can, within minutes, corrupt Windows, infect other machines, and destroy critical data.

Users should never click on email attachments without at least first scanning them for viruses using a business-class anti-malware application. As for clicking on links, users should access Web sites by opening a browser and manually navigating to the sites in question.

8: Surf smart
Many business-class anti-malware applications include browser plug-ins that help protect against drive-by infections, phishing attacks (in which pages purport to serve one function when in fact they try to steal personal, financial, or other sensitive information), and similar exploits. Still others provide "link protection," in which Web links are checked against databases of known-bad pages.

Whenever possible, these preventive features should be deployed and enabled. Unless the plug-ins interfere with normal Web browsing, users should leave them enabled. The same is true for automatic pop-up blockers, such as are included in Internet Explorer 8, Google's toolbar, and other popular browser toolbars.

Regardless, users should never enter user account, personal, financial, or other sensitive information on any Web page at which they haven't manually arrived. They should instead open a Web browser, enter the address of the page they need to reach, and enter their information that way, instead of clicking on a hyperlink and assuming the link has directed them to the proper URL. Hyperlinks contained within an e-mail message often redirect users to fraudulent, fake, or unauthorized Web sites. By entering Web addresses manually, users can help ensure that they arrive at the actual page they intend.

But even manual entry isn't foolproof. Hence the justification for step 10: Deploy DNS protection. More on that in a moment.

9: Use a hardware-based firewall
Technology professionals and others argue the benefits of software- versus hardware-based firewalls. Often, users encounter trouble trying to share printers, access network resources, and perform other tasks when deploying third-party software-based firewalls. As a result, I've seen many cases where firewalls have simply been disabled altogether.

But a reliable firewall is indispensable, as it protects computers from a wide variety of exploits, malicious network traffic, viruses, worms, and other vulnerabilities. Unfortunately, by itself, the software-based firewall included with Windows isn't sufficient to protect systems from the myriad robotic attacks affecting all Internet-connected systems. For this reason, all PCs connected to the Internet should be secured behind a capable hardware-based firewall.

10: Deploy DNS protection
Internet access introduces a wide variety of security risks. Among the most disconcerting may be drive-by infections, in which users only need to visit a compromised Web page to infect their own PCs (and potentially begin infecting those of customers, colleagues, and other staff).

Note: Another worry is Web sites that distribute infected programs, applications, and Trojan files. Still another threat exists in the form of poisoned DNS attacks, whereby a compromised DNS server directs you to an unauthorized Web server. These compromised DNS servers are typically your ISP's systems, which usually translate friendly URLs such as yahoo.com to numeric IP addresses like 69.147.114.224.
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 5:52 pm

Lyka Janine Adap wrote:
How do you check if your computer has a virus?

Hello there bud. A simple scan using an anti virus to your files will do to know if your computer have a virus.
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 5:57 pm

Lyka Janine Adap wrote:
How do you stop a virus once you discover you have one?

The easiest way to remove a shortcut virus in your flashdrive are the ff:

First, open the Command Prompt in your PC. Or simply press windows key + R. The dialog box will appear. And then type, CMD.
See the attach link:
http://technicalnotes.org/wp-content/uploads/2015/09/Cmd-Windows-Key-R.png

Second, type the attrib -h -r -s /s /d e:\*.* Then Click ENTER. (You must know your letter drive before typing this. The letter e is the letter drive of your flashdrive.)
See the attach link:
https://redicals.com/wp-content/uploads/2013/12/remove+shortcut+virus.png
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Marilyn Macabidang



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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 9:05 pm

Hi!!! I hope will help you this answer to avoid the viruses on your computer.

The internet is a vital part of many lives, and some of us use it constantly throughout the day. But that constant usage has increased the risk of infection by viruses and malware, leading to potential data loss and identity theft. Every internet user should be versed in how to prevent virus infection and what to look for. Think of it as a driver's manual for the internet superhighway. Armed with the knowledge to avoid getting and spreading virus infections, you'll not only make the internet safer for yourself, but for everyone else you connect with.
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Marilyn Macabidang



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PostSubject: Re: Computer Virus   Sun Aug 19, 2018 9:10 pm

Wooow. thanks for the information about preventing of virus.
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Mon Aug 20, 2018 2:06 pm

Lyka Janine Adap wrote:
How do you check if your computer has a virus?

While there are various antivirus solutions you can take, it’s best to know how malware affects your computer first so you can quickly recognize and deal with the problem. These are a few ways to find out if your computer has a virus before it’s too late.

1. Slow computer

The most common symptom of a malware infection is a slow running computer. Are your operating systems and programs taking a while to start up? Is your data bandwidth suspiciously slow? If so, your computer may potentially have a virus.

2. Programs opening and closing automatically

Malware can also be present when your programs are opening and closing automatically. However, do check if some programs are meant to behave this way or if they are simply incompatible to run with your hardware first before coming to the conclusion that your computer has a virus.

3. Blue screen of death (BSOD)

If your PC crashes regularly, it’s usually either a technical problem with your system or a malware infection. You might not have installed the latest drivers for your device or the programs you’re running could possibly be incompatible with your hardware. If none of these problems are apparent in your PC then the virus could be conflicting with other programs causing your crashes.

4. Lack of storage space

There are several types of malware that can manipulate the files saved on your computer. Most tend to fill up your hard drive with suspicious files.



Do you additional ways on how to check of the personal computers are having a virus? Kindly comment it down.
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rafaelaespejo29



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PostSubject: Re: Computer Virus   Sat Sep 22, 2018 7:43 pm

What are some computer viruses?
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rafaelaespejo29



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PostSubject: Re: Computer Virus   Sat Sep 22, 2018 7:44 pm

What is computer virus?
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rafaelaespejo29



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PostSubject: Re: Computer Virus   Sat Sep 22, 2018 7:46 pm

What are the symptoms if your computer have a virus?
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Shaira Ibel Gamueda
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PostSubject: Re: Computer Virus   Sun Sep 23, 2018 3:24 pm

rafaelaespejo29 wrote:
What is computer virus?

A computer virus, much like a flu virus, is designed to spread from host to host and has the ability to replicate itself. Similarly, in the same way that flu viruses cannot reproduce without a host cell, computer viruses cannot reproduce and spread without programming such as a file or document.

In more technical terms, a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code. In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.

any concerns, Ella? You may ask aand leave a message. Thankyou
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Crystaline Lovely

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PostSubject: Re: Computer Virus   Sun Sep 23, 2018 7:57 pm

What is the virus that spread in computer?
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Crystaline Lovely

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PostSubject: Re: Computer Virus   Sun Sep 23, 2018 8:00 pm

If you think your computer has a virus,what is a good first step in solving the problem?
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Crystaline Lovely

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PostSubject: Re: Computer Virus   Sun Sep 23, 2018 8:01 pm

What do viruses do to your computer?
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Crystaline Lovely

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PostSubject: Re: Computer Virus   Sun Sep 23, 2018 8:01 pm

What is the most dangerous type of computer virus?
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Crystaline Lovely

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PostSubject: Re: Computer Virus   Sun Sep 23, 2018 8:02 pm

How are viruses transmitted?
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