Posts Tagged ‘how to’

How to protect your system from Email attached virus.

How Email Viruses Works:
Viruses and Email attachment:
How to protect your system from Email attached virus virus:
A computer virus is a program that can copy itself and infect users computer without permission of the user.Viruses refers to different malware programs.A virus can spread from one system to other system through network or internet or by carrying in a removable medium such as floppy
disc,pendrive or cd.Viruses can spread from one network to another network through file sharing etc and spreading malicious code.Hence it becomes easier for Virus writers to spread dangerous virus or other Malware through Email,Web and file sharing.These Emails are attached with HTML tags and embedded scripts which can destroy whole pc and delete all valuable information.These Emails can distroy hundreds or thousands of users information with in few keystrokes.

How Email Viruses Work :
There are many ways how a virus can distroy pc through Email.Most common method used by Virus writers is file attachment method to invade users pc.As soon as the user click on Executable file to which virus is attached,this virus enters into users system without his permission and copies his whole data or else it destroys.That’s why you should take care when ever you open mail attached files,even which is send by your friend.Few mail attached viruses are Melissa virus,Klez virus and trojans etc.By following the below steps you can minimize the risk of infecting your computer with email attachment.

Steps to protect your system from email attached virus:
1)Be careful with attachment:
As i told you even if an email sends by your friend if harmful.A few viruses takes email ids from address book and sends to destination from those email ids with attached virus.so ask your friend before downloading the file.Scan those files as soon as you downloaded.Better to delete those files which are infected.Never open a file which comes from unknown person.If you are using Microsoft Outlook download secutiry software which protects your system from email attached virus.NOTE:Never open .vbs extended file.As it contains very harmful virus which distroys your Operating System.

2)Do not hide File extensions:
Most of the Operating systems such as windows 98,Xp etc will now show hidden files.Most of the system files are in Hidden format.Operating systems will not let you to delete those files accidently.Those files are going to infect as soon as you downloaded Email attached virus.
Follow the below steps to show all the files in your computer.
-Double click on My computer.
-Go to Tools.
-Click on Folder Options.
-Go to view and then next click on Show all the files.
-Do not check the Setting “Hide File Extensions For Known File Types”.

3) Use HTML Email Sparingly:
HTML tags helps virus to enter in to others system.HTML tags having few advantages with files.They can change Color,text, including images in email.When you preview the image in your email then virus is activated.These type of virus may distroy your system just by previewing the images.Bubbleboy virus uses this type of method to destroy your system.
To protect your system from these kind of viruses is to Turn off HTML sending and receiving option.Or you can also set this option to not preview.The best option in my view is to use email programs like Courier by Rose City Software which allows you to disable all sending and receiving HTML tags through email.

4)Disable Windows Scripting Host:
ILOVEYOU warm and NewLove warm use the windows script hosting language.Windows script hosting is an optional part in Windows operating system.It can be removed from the system.As soon as the windows script hosting is removed from the system all the dirty viruses enters in your system.Mainly ILOVEYOU warm and NewLove warm.To combat these viruses, you could disable the Windows Scripting Host ability, but those viruses may effect your system in negative ways.
Read here …advantages and disadvantages by using Windows script hosting.
Better to install this software called Scrip trap
which traps all html tags and this software will not let html tags to enter in your system without your permission.
Following procedures to disable Windows Script Hosting for different operating systems.
For Windows 95:
All the users who are using windows 95 will have windows script hosting installed internally.Or else it can be installed by using internet explorer.
Procedure to disable Windows script hosting in windows 95:
-Open My Computer.
-Select View and then Options.
-Click on File Types tab.
-Find VBScript “Script File”.
-Select Remove and then click OK.

Procedure to disable Windows script hosting in windows 98:
-Click on Start button in tool bar.
-Go to settings.
-Go to control panal and then click on Add/Remove programs.
-Chose the Windows Setup tab.
-Click on Accessories for details.
-Uncheck Windows Scripting Host.
-Click on OK to save changes.

Procedure to disable Windows script hosting in windows NT:
-Double Click on My computer.
-Select View.
-Click on File Types.
-Find VBScript Script File.
-Select Remove and then press OK.

Procedure to disable Windows script hosting in Windows 2000:
-Double click on My computer.
-Go to tools and then folder options.
-Click on File Types.
-Find VBScript Script File.
-Select delete and then click ok.

5)Buy Anti-Virus software:
If you are not having any antivirus software better to download antivirus software immediately.Or else it will be harmful to your sytem.Popular and commercial antivirus shown below.You can download antivirus softwares from here…
-Avira AntiVir
-Free antivirus – avast
-Free AVG
-Free McAfee
-NOD32
-PC cillin
-Norton

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How to prevent from hacker or Hacking

From this article you will be knowing How to protect system hacking?how to protect from virus?

Introduction:

What is online hacking:Online hacking means when hacker entering into others system without his permission.This is an illegal access.As long as the user system is online hacker hacks user system.he may copy all valuable information from user system or he may delete.hacker continuous to hack until the user switch off his modem or system.To prevent this type of hacking user should protect his system by using good firewall system,softwares,anti virus etc.

Top 20 Security tools:

Nessus, Ethereal, Snort, Netcat, TCPdump, Hping, DNSiff, GFI LANguard, Ettercap, Nikto, John the Ripper, OpenSSH, TripWire, Kismet, NetFilter,
IP Filter, pf, fport, SAINT, OpenPGP.
These tools works on Linux and Xp.If your system is protected by these softwares then it is highly impossible for the hacker to hack your system.No virus can enter your system.
There are many steps to protect your system six steps are given below:

1.Install good Antivirus software.
2.Keep Operating system updates.
3.Get a Firewall system.
4.Conduct a vulnerability test.
5.Security policy.
6Avoid unnecessary network services.

1)Get a Firewall system:

The basic function of firewall is to regulate flow from computer networks to different trusted levels.Firewall without proper construction can become useless.Firewall is the first and major thing to keep hackers,viruses away.Firewall acts as a wall between your system and hacker.Whenever hacker wants to enter your system without your permission firewalls block hacker.And it will not give permission until request is granted by you.Many hackers uses trick to get passwords and other valuable information.They create fake login page.For example let us take orkut fake login page and this page is similar to orkut main page.Hacker sends this page to person which he wants to hack.If the person enters his password then this password mails to users account.This is the way what the hackers use.If your system is protected with firewalls then it will not accept you to enter your password.It blocks all fake scripts.Similarly they use invisble keylogger to hack yahoo .If your system well protected by Firewalls then it is difficult to the hacker to hack your system.

2)Operating system update:

Upgrade operating system regularly and frequently to avoid hacking.If your operating system is Microsoft upgrade it regularly. Microsoft provides latest patches or versions of software,spywares and many anti hacking updates.So better to buy genuine Xp or Vista version and update it regularly to avoid hacking.If your operating system is genuine then they provide all free softwares for you. GFI events manager which provides wide login network that retrieves login from any operating system (i.e XP/WIN NT/VISTA) etc.It detect attacks and malicious network users from hacking.It catches hackers red handedly.

3)Install anti-virus software:

A virus is simply a program which infects files,drives and then router.Some virus are harmless .some may distroy files and some may steal your valuable data.If your system is connected to internet then you must use anti-virus software.When ever you switch on your internet huge amount of packets enters your system.Those packets contain viruses.As soon as they enter your system they hack cookies.Cookies contain valuable information.If your cookies got hacked then damm sure all your passwords got hacked.Few virus which are attached to emails and they request us to login our password.this is one type of hacking uses by the hacker.So in order to protect your passwords a good anti-virus software should be installed.

4)Conduct a vulnerability test:

This test is highly preferred by companies to protect valuable data from hacking.vulnerability test is little bit costly when compared to all other programs.But it provides high security than anti virus softwares.This tests mainly points to limitations and flaws in the program.The best method to conduct vulnerability is to contact system administrator or computer consultancy to provide access to your network or systems connected to your network for daily or twice a day.This provides high security to your files.Hacker cannot hack your valuable data.your system is totally protected.This is how to protect your system form hacker as well as from virus.

5)Avoid unnecessary network services:

While installing your system non essential softwares should be disabled or removed from system.If those softwares are not updated regularly it is better to uninstall that software.why because hacker always tries to find weakness in the softwares.After getting the weakness he uses those weakness for his advantages.This is what hacker do.After getting the weakness he may stole your passwords and valuable data.So whenever you feel that this software is unnecessary better to remove those softwares.Or else it will create huge damage to you.

6)Security policy:

In this interconnected world every corporation needs high security policy.Threads exists not only from enterprises but also from
hackers.Companies,corporations must ensure confidentiality, integrity and availability of their data in their field.This data can be protected by high  security policy. Symantec Enterprise security manager provides good security for confidential files.It is difficult to hack these files.As well as virus cannot enter in to user system.This is a good way to protect your system from hacking as well as from virus.

How to speed up firefox?

Boost Internet speed using mozilla firefox:

From this article you will be knowing “How to speed up firefox”?How to increase Internet speed using Mozilla firefox?Procedure to increase firefox speed?
this feature is useful for those who are using Broadband connection.If you follow the below steps your Internet speed may definitely increase.Throughput is greatly increased due to Pipelining.The main definition of pipelining is that which sends number of HTTP requests to server without waiting for response.that is Pipelining increases system performance by allowing to make cpu to be executing more number of instructions without waiting for response.

It is easy to speed up browsing speed in Firefox using pipelining technique.Pipelining technique allows you to send several requests one at a time to web server, rather than one by one.Most probably this pipelining feature is always disable in every system.It can easily be turned on.Pipelining feature allows you to search many web pages one at time.If you want to turn on pipelining feature just follow these steps.

1)type about:config in address bar(that is where you type url) and press enter.

2)type network.http in Filter text box.list of settings will appear you.this Filter text box lies at the top of the page.Just see the figure below you can get brief idea.

3)double click on “network.http.proxy.pipelining” button.

4)double click on “network.http.pipelining.maxrequests” setting.type in 0(zero) and press “Ok” in the text box as shown below.

Remember that few web servers does not accept pipelining technique.make the pipelining settings in disable mode.Please make sure follow the reverse procedure to disable the pipelining technique.