What is a Computer Virus? How to protect your Mobile/PC from it?

A Computer Virus is a malicious software code that is designed to spread from one system to another by attaching itself to a system file of an attacked computer system or Mobile rendering it to malfunction or rendering it's Operating system corrupt.

For example:- An infected Universal Serial Bus (USB) or Pen drive can infect the computer or the Mobile Phone. It not only infects but multiplies itself in to many copies and transfers itself to other computers on the network.

In order to prevent a Computer Virus to attack your system, it is highly recommended that a User should install an Anti-Virus software from a reputed vendor like Symantec/Norton, Kaspersky, Avast, Google Play store, Apple or Samsung etc.,

If you do not have an Anti-Virus installed on your PC or Mobile and your computer is already attacked by the Virus then try to install the new Anti-Virus software downloaded online or purchased through original vendor in the form of a CD/DVD. If the system has totally collapsed. Then it is bad news as all your data on Mobile phone or the PC will be lost.

So it is highly essential to scan a USB, CD or any other devices attached to your system/Mobile to be scanned first to check any hidden Virus.

Viruses could be downloaded on to your system through  Internet also. In order to protect your PC or Mobile Phone from online attack, avoid clicking on to suspicious links in e-mails or websites offering murky deals. Install a firewall to block unwanted and suspicious traffic entering your computer.

Outdated Operating systems should be removed from your system  and latest OS should be installed for your Anti-Virus Program to function properly and protect your PC or Mobile phone.

Always download your Anti-Virus software from original vendor online. Also download other essential utilities such as Adobe flash player from the Adobe site itself by visiting the site.

Also another grey is peer-to-peer or P2P networking, where online users use bit-torrent technologies such as now defunct Lime-wire to share movies, games, software, and other pirated data. There lies a potential threat of Trojans (hidden malicious codes) presenting itself as a genuine file getting downloaded on to your system.

Android phones are reportedly leaking data worldwide,  don't leave 'unknown sources enabled', avoid illegitimate apps i.e., outside of Google Play Store.

Downloading files on a Mobile is very much similar to a PC, always see what permissions you are allowing newly installed software/App access to on your device, that is the crucial thing to stop your device being manipulated. If you suspect anything suspicious twice check the credentials of the software again online before continuing with the installation.

Often clean your devices of temporary files, free up disk space, keep your installed programs regularly updated through visiting original vendor sites. Never let your personal device in a public space unattended or hand over it for even a few moments.

Always lock up your PC/Mobile through a Pin/Password or Pattern or Voice or Facial recognition lock, don't modify i.e., jailbreaking.

Wireless security is another area where users have to be cautious connecting to an unsecured network, where any one can log in and install a virus. Use a secure Wireless connection only. Bluetooth devices have potential security problems, like Bluetooth Holes and Bluetooth Bonding, often scan your Bluetooth devices for viruses.

Don't click on suspicious links on Twitter, Facebook, MySpace etc.,

Three basic steps for Android Users :
1. Do not leave 'unknown sources enabled'
2.Avoid third party apps i.e., use only apps from Google Play store.
3. Read App Permissions carefully.

For Apple Users :
 it is a Unix based operating system it is less susceptible to attacks.

1. Apple has built in Anti-Malware X protect officially known as File Quarantine, snow leopard, Apple OS X
2.  Do Not Install Norton Anti-Virus on a Mac machine. Not compatible and it will seriously damage your device
3. Number of fake security products don't install them.
4. Block Pop-ups
5. Avoid suspected websites
6. Avoid Peer to Peer communications.
7. Use an Anti Virus Program like ClamXav
8. Consider using Mac OS X built in firewalls. 

What is Malware? How to Protect your Mobile/PC from it?

What is Spyware? How to Protect your Mobile/PC from it?

Valleyz

Browser Security Essentials for User Privacy Part 4

Continuing from the previous post, we will discuss now what are session cookies and persistent cookies and how to handle them.

Session Cookies are sometimes used in authentication in order to log-in a customer into a restricted area, like chat clients, e mail, bank accounts and other authentication based user access websites, to record your visit and amount of time spent at a website and give seamless access to all the web pages associated with that website. 

Session cookies are also time duration sensitive and record your activity when using a website, if there isn’t any activity for a stipulated period of time, some websites prompts to re enter the authentication credentials to prove that it is the original user who is using the account, since there are so many ways that an account can be compromised. Always remember to clear the cache and other personal details like search forms, address bars and history of the browser when using a public terminal and also do not forget to close off the browser before leaving. 

The closing of the browser terminates all the connections with communication ports through which the data traverses on the machine. This all information is stored in an Internet Protocol header (IP header) and other memory registers on your system. There are so many other ways to work with IP headers. So when the browser window is closed it terminates all those ports involved in communication at that particular moment of time. So when a new Browser is opened it has to initiate all the requests to establish a new connection with new set of values.This in many ways helps protect your privacy.

Communication technologies have converged fast, 4G networks are already deployed in many parts of the world particularly in some markets in Scandinavia, North America and South East Asia. More and more devices are hooking up, more technologies and gadgets are developing at a rapid pace, the more the security issues are involved with all the devices which we use for our daily communication needs, and it is highly advised to update your understanding and techniques of using these technologies, so that we do not fall victim to attacks and loose our precious data and time.

And now we will come to discuss Persistent cookies, these are the cookies which note a user's preferences and other needs like customer settings like language, mode and other user preferences while visiting a site and stores this information in the cookie to be placed onto your system. So when you make the next visit, it is easy for us to be offered services at a faster speed. But the problem with these set of cookies is same as ever, that it could be used to target you knowing your preferences, if a malicious user gains access to these cookies. So it will be up to you to clear the cookies when you visit a site. Or the level of trust you place with the site being visited.

So you need to focus on how to set privacy settings on your local browser, if you're using multiple browsers, you need to understand where you need to look for the privacy settings in different browsers. You need to understand how to clear cookies from your system, how often and when.

In the upcoming posts we will look into how other types of persistent cookies( which are almost impossible to remove), flash objects and scripts pose serious privacy issues for a user and how to deal with them.

The reason to take these issues seriously is, it is not all the time that a user can know in any way that his accounts are being used unscrupulously. Sometimes there is every chance that you will never know, how your personal accounts have been abused.

Browser Security Essentials for User Privacy Part 3

It is long time since I have delivered a post at my blog due to my busy schedule, but please remember one thing, that in absence of ready information, you should try to inculcate the habit of searching for latest trends related with Internet security.

And now we will further discuss Browser Security with respect to User's privacy, and how to handle the cookies that a user might come across while surfing the web. We will also discuss about scripts and flash running on a system in upcoming posts.

So now, lets settle down to discuss cookies. It is important to understand all the privacy issues associated with all types of cookies.

The types of cookies are tracking cookies( these are cookies specially designed to track the movements of a user when surfing the web),  session cookies, persistent cookies and and also the Local Shared Objects( Flash cookies ).

Session cookie are session based that are erased after a browser is closed, they are no longer stored on a users system, and that work with a typical session ID. They are stored in a temporary folder and automatically get erased.

Session Cookies are sometimes used as authentication cookies in order to log-in a customer into a restricted area, like chat clients, e mail, bank accounts and other authentication based user access websites. These cookies are specially designed both ways to protect a users account from intrusion from a hacker waiting in line to attack,  to record user's visit to a website and give seamless access to all the web pages associated with that website also recording your visit length simultaneously.

The persistent cookies are the one's which notes customer settings like language, Geographic location and other user preferences while visiting a site and stores this information in the form of a cookie to be placed onto the user's system. So, when user makes the next visit it is easy for him/her to be identified and offered services at a faster speed. But the problem with these set of cookies is same as ever, that it could to be used to target you knowing your preferences if a malicious user gains access to these cookies. It will be up to the user to clear the cookies when visiting a site. Or the level of trust a user place's with the site.

User need to focus on how to set privacy settings on the local browser, if you're using multiple browsers, you need to understand, where you need to look for the same privacy settings in different browsers. You need to understand how to clear cookies from your system, how often and when.

In the upcoming posts we will look into how other types of persistent cookies, flash objects and scripts pose privacy issues for a user.

Browser Security Essentials for User Privacy part 2

Before moving ahead we should understand what a term cookie is ?

 It is a small piece of Text string  placed in the user's memory ( System ), by  a host that is being visited. Why it is placed ? And How it is used ? are the two questions that a  user should understand and use it according to personal preferences, like the trust you place with a website being visited with respect to your online privacy.

 A cookie is used for many purposes including authentication, session tracking or  remembering the user preferences such as shopping carts and other data.

Authentication involves a host to know a particular user’s information and simultaneously it can allow it to log in at the terminal.  Here, a browser needs to accept the cookie,  without doing so, you may not be able to access the service.

Session tracking as the name itself suggests, is used to track the amount of time spent by a user at a website and other related info.

Also we understand, by remembering the preferences of a user such as shopping carts and other data, lets a host or other third party hosts know the details of user’s spending and this data further used in business targeting.

As you know now that a cookie is very helpful when it is used in a proper manner, but sometimes there are many bad sites which attack computers online, it is well advised to be cautious and you can enable switch it on and off  according to your preferences and trust which you place with the website. Browser security will be further discussed in the next post.

Browser Security Essentials for User Privacy Part 1

                                           
                                                       Source freepixels.com
One of the aspects of computer security mostly neglected or ignored is the browser security. 

Most users tend to neglect or ignore this important feature of securing their system from malware being run on their system when they inadvertently visit a bad site and click scrupulous  links thinking them to be safe. And let the malicious software’s intrude your system, the actions a wary user can avoid.

 This is a news story I followed this morning and this should be an eye opener,  how an unsuspecting consumer is led to click on malicious links and rogue anti-virus software’s getting installed onto your system without you knowing the veracity of the rogue software. 

The big part of the problem is removal, it is hard to get them removed from your system once you have installed them. So protection is better than cure here too. 

Check the authenticity of the security software you are downloading from the web.

One thing you will notice when visiting a website, you come across many other third party sites. Some times these third party sites are vulnerable and can pose a security risk to your system.

One thing a user should keep in mind when visiting a website, that the browser and the network are giving out information to the host. Like the IP address, the type of browser you are using, and other details, as most of us know this fact. So is akin walking onto an open street.

Besides this, our system also shares a level of security when visiting a host. That you allow a host to place a cookie on to your system and run scripts. You can simultaneously block these options. Why ? We will look into the reasons ahead in the next post Browser Security 2.

For Further Reading :

Browser Security Esssentials Part 2 

Broswer Security Essentials Part 3

Browser Security Essentials Part 4