Saturday, 21 January 2012

About NOD32 virus

With rapid advancement in technology, computer systems are also making big strides. More and more programs and applications have been compressed and made smaller in size and usage. However it is only natural that with new applications and programs, new stronger viruses will also evolve and pop-up on your computer screens. So it is very important, or actually most important, to equip yourself with the best antivirus program to protect yourself and keep you well safeguarded. Talking about Anti Virus programs, the NOD32 Anti Virus is the best antivirus program available this time around. It is, by far, the only anti virus program which can stop tpuo 100 % viruses running wild on your computer. It can stop worms, trojans, malware, spyware, phishing and much more.

NOD32 Anti Virus is the best antivirus and this has been further given more weightage by its ability to have not missed a single in the wild worm or virus. This was done through an extensive test on it by Virus Bulletin. The Bulletin is an independent testing organization equipped full-time antivirus personnel who are experts in their own fields. It is trusted by the best antivirus suites and recognized extensively within the antivirus industry for its thorough comparative tests with a focus set on virus detection rates, generation of false positives and scanning speed. It is through the tests carried by the Virus Bulletin wherein NOD32 Anti Virus was voted as the best antivirus with the unique capability of not missing out even a single in the wild worm upto date. The award still stands strong and NOD32 Anti Virus still does a lot better then any other antivirus suite in the industry

Thursday, 12 January 2012

computer insecurity


computer insecurity
Computer insecurity refers to the concept that a computer system is always vulnerable to attack, and that this fact creates a constant battle between those looking to improve security, and those looking to circumvent security.

Security and systems design

lthough there are many aspects to take into consideration when designing a computer system , security can prove to be very important. At the same time many organizations are improving security, many types of cyber criminals are finding ways to continue their activities. Almost every type of cyber attack is on the rise. In 2009 respondents to the CSI Computer Crime and Security Survey admitted that malware infections, denial-of-service attacks, password sniffing, and web site defacements were significantly higher than in the previous two years.
Reasons
There are many similarities (yet many fundamental differences) between computer and physical security. Just like real-world security, the motivations for breaches of computer security vary between attackers, sometimes called hackers or crackers. Some are thrill-seekers or vandals (the kind often responsible for defacing web sites); similarly, some web site defacements are done to make political statements. However, some attackers are highly skilled and motivated with the goal of compromising computers for financial gain or espionage.[citation needed] An example of the latter is Markus Hess (more diligent than skilled), who spied for the KGB and was ultimately caught because of the efforts of Clifford Stoll, who wrote a memoir, The Cuckoo's Egg, about his experiences. For those seeking to prevent security breaches, the first step is usually to attempt to identify what might motivate an attack on the system, how much the continued operation and information security of the system are worth, and who might be motivated to breach it. The precautions required for a home personal computer are very different for those of banks' Internet banking systems, and different again for a classified military network. Other computer security writers suggest that, since an attacker using a network need know nothing about you or what you have on your computer, attacker motivation is inherently impossible to determine beyond guessing. If true, blocking all possible attacks is the only plausible action to take.

Techbuddies is an online technical support for all kind of computer problems.In techbuddies we support all kind of products like Microsoft office,windows 7,Windows vista,virus removal,printer problem,router setup
Techbuddies have trained expert to resolve your computer problems.
Please call us Toll free -1-855-517-2433

explotis that compromise you computer system and give access to hacker or how you can hack any computer system


An exploit (from the verb to exploit, in the meaning of using something to one’s own advantage) is a piece of software, a chunk of data, or sequence of commands that takes advantage of a bug, glitch or vulnerability in order to cause unintended or unanticipated behavior to occur on computer software, hardware, or something electronic (usually computerised). This frequently includes such things as gaining control of a computer system or allowing privilege escalation or a denial-of-service attack
There are several methods of classifying exploits. The most common is by how the exploit contacts the vulnerable software. A 'remote exploit' works over a network and exploits the security vulnerability without any prior access to the vulnerable system. A 'local exploit' requires prior access to the vulnerable system and usually increases the privileges of the person running the exploit past those granted by the system administrator. Exploits against client applications also exist, usually consisting of modified servers that send an exploit if accessed with client application. Exploits against client applications may also require some interaction with the user and thus may be used in combination with social engineering method. Another classification is by the action against vulnerable system: unauthorized data access, arbitrary code execution, denial of service.
Many exploits are designed to provide superuser-level access to a computer system. However, it is also possible to use several exploits, first to gain low-level access, then to escalate privileges repeatedly until one reaches root.
Normally a single exploit can only take advantage of a specific software vulnerability. Often, when an exploit is published, the vulnerability is fixed through a patch and the exploit becomes obsolete for newer versions of the software. This is the reason why some blackhat hackers do not publish their exploits but keep them private to themselves or other hackers. Such exploits are referred to as 'zero day exploits' and to obtain access to such exploits is the primary desire of unskilled attackers, often nicknamed script kiddies
Types
Exploits are commonly categorized and named by these criteria:
  • The type of vulnerability they exploit (See the article on vulnerabilities for a list)
  • Whether they need to be run on the same machine as the program that has the vulnerability (local) or can be run on one machine to attack a program running on another machine (remote).
  • The result of running the exploit

Pivoting

Pivoting refers to method used by penetration testers that uses compromised system to attack other systems on the same network to avoid restrictions such as firewall configurations, which may prohibit direct access to all machines. For example, an attacker compromises a web server on a corporate network, the attacker can then use the compromised web server to attack other systems on the network. These types of attacks are often called multi-layered attacks. Pivoting is also known as island hopping.
Pivoting can further be distinguished into proxy pivoting and VPN pivoting:
  • Proxy pivoting generally describes the practice channeling traffic through a compromised target using a proxy payload on the machine and launching attacks from this computer.[1] This type of pivoting is restricted to certain TCP and UDP ports that are supported by the proxy.
  • VPN pivoting enables the attacker to create an encrypted layer 2 tunnel into the compromised machine to route any network traffic through that target machine, for example to run a vulnerability scan on the internal network through the compromised machine, effectively giving the attacker full network access as if they were behind the firewall.
Typically, the proxy or VPN applications enabling pivoting are executed on the target computer as the payload (software) of an exploit
Virus Removal  Techniquies offered by techbuddies

If your computer is behaving strangely, your friends are receiving e-mails from your account which you never sent, you see updates on your facebook profile which you never made, you may have a virus on your machine that has hacked into your account by learning your password and user name of your various accounts. The symptoms described above are some of the visible symptoms of the viruses that infect computers, there are viruses which take control of our machine and use this to direct other machines to attack other machines (popularly known as bots). This slows down your machine and you are not even able to perform regular tasks from your machine. This may be happening even though you have a valid Anti-Virus installed on your machine. Some viruses disable the anti-virus so that they can detect the viruses and remove them.

While complicated it is possible to remove viruses from your machine without formatting it or deleting any data from your machine. Our team of certified experts can help you to remove viruses from your machine and secure your PC, preventing future attacks on your machine.

Techbuddies is an online technical support for all kind of computer problems.In techbuddies we support all kind of products like Microsoft office,windows 7,Windows vista,virus removal,printer problem,router setup
Techbuddies have trained expert to resolve your computer problems.
Please call us Toll free -1-855-517-2433

what is a trojan and how to protect your computer from trojans


A Trojan horse, or Trojan, is software that is intended to perform, simultaneously, a desirable (expected) effect and a covert (unexpected) effect. Trojan horses can make copies of themselves, steal information, or harm the computer system. The term is derived from the Trojan Horse story in Greek mythology.
Symtoms of trojan in the system-mouse is blinking ,cd tray comes out on its own,computer is running slow,lot of services are executed on the computer .
Some of the common trojan are –beast trojan ,dancing pigs trojan,file sharing trojan etc
Trojan horses in this way require interaction with a hacker to fulfill their purpose, though the hacker need not be the individual responsible for distributing the Trojan horse. It is possible for individual hackers to scan computers on a network using a port scanner in the hope of finding one with a malicious Trojan horse installed, which the hacker can then use to control the target computer.[2]
A recent innovation in Trojan horse code takes advantage of a security flaw in older versions of IE explorer and Google Chrome to use the host computer as an anonymizer proxy to effectively hide internet usage. The hacker is able to view internet sites while the tracking cookies, internet history, and any IP logging are maintained on the host computer. The host computer may or may not show the internet history of the sites viewed using the computer as a proxy. The first generation of anonymizer Trojan horses tended to leave their tracks in the page view histories of the host computer. Newer generations of the Trojan horse tend to "cover" their tracks more efficiently. Several versions of Slavebot have been widely circulated in the US and Europe and are the most widely distributed examples of this type of Trojan horse.

In oder to remove or protect the computer from getting infected from these trojan the best way is to have the best technical support because when ever a virus or a trojan comes into the computer they try to block the security software that is deployed in to the computer.
We in techbuddies maually check each and every part of the computer pannel that might contains theses virus
In oder to get the assistance please call us toll free +1-855-517-2433
Techbuddies is an online technical support for all kind of computer problems.In techbuddies we support all kind of products like Microsoft office,windows 7,Windows vista,virus removal,printer problem,router setup
Techbuddies have trained expert to resolve your computer problems.
Please call us Toll free -1-855-517-2433

What is a firewall and how to use is effectively


The term firewall ,which generally reffered to a utility used by companies for commercial purpose ,has evolved into a new term:personal firewall.This term typically refers to firewall installed on a standalone system that may or may not be networked (That is ,it usually connects to an isp)IN other words a personall firewall is a firewall for a personal setting .
Firewall can be a software or a hardware that can be deployed on to any computer or on a network to protect the unauthorized acess of the computer and the network .
For a hacker the firewall is the first security that he need to over come.so that he can get into the computer or a network .
In todays date no firewall is a 100% protector of the network or the personal computer .
As a hacker point of view each firewall which is designed and rolled out into the market has all the codeing and the features that comes up on the internet .The firewall is a pre defined system and cannot do any extra work or any intelligent work on its own .
In techbuddies we provide a firewall as well as a dedicated techsupport specialist that can maually can monitor your system and the network .We make sure that the computers are free from any kind of computer hackers and safe to go online with the internet
The dwan of the internet is full of infected and corrupted people but as a humanity and best practice we in techbuddies protect user from getting influenced by the courroupt people of the internet .

Techbuddies is an online technical support for all kind of computer problems.In techbuddies we support all kind of products like Microsoft office,windows 7,Windows vista,virus removal,printer problem,router setup
Techbuddies have trained expert to resolve your computer problems.
Please call us Toll free -1-855-517-2433