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What is computer Insecurity?
his article is about computer security exploits and defenses. For computer security through design and engineering, see computer securityMany current Computer System have only limited security precautions in place. This computer insecurity article describes the current battlefield of computer security exploits and defenses.
Many current real-world computer security efforts focus on external threats, and generally treat the computer system itself as a trusted system. Some knowledgeable observers consider this to be a disastrous mistake, and point out that this distinction is the cause of much of the insecurity of current computer systems — once an attacker has subverted one part of a system without fine-grained security, he or she usually has access to most or all of the features of that system. Because computer systems can be very complex, and cannot be guaranteed to be free of Defects, this security stance tends to produce insecure systems.
Exploits?
An exploit (from the same word in the French language, meaning "achievement", or "accomplishment") is a piece of software, a chunk of data, or sequence of commands that take 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 computerized). This frequently includes such things as gaining control of a computer system or allowing privilege escalation or a denial of service attack. Many development methodologies rely on testing to ensure the Quality of any code released; this process often fails to discover extremely unusual potential exploits. The term "exploit" generally refers to small programs designed to take advantage of a software flaw that has been discovered, either remote or local. The code from the exploit program is frequently reused in trojan horses and computer viruses. In some cases, a vulnerability can lie in certain programs' processing of a specific file type, such as a non-executable media file. Some security web sites maintain lists of currently known unpatched vulnerabilities found in common program.
How did I get infected with Trojan Horse?
Trojans Horses virus are executable programs, which means that when you open the file, it will perform some action(s). In Windows, executable programs have file extensions like "exe", "vbs", "com", "bat", etc. Some actual Trojan filenames include: "dmsetup.exe" and "LOVE-LETTER-FOR-YOU.TXT.vbs" (when there are multiple extensions, only the last one counts, be sure to unhidden your extension so that you see it). More information on risky file extensions may be found at this Microsoft documents.
Trojans can be spread in the guise of literally ANYTHING people find desirable, such as a free game, movie, song, etc. Victims typically downloaded the trojan from a WWW or FTP archive, got it via peer-to-peer sharing using IRC/instant messaging/Kazaa etc., or just carelessly opened some email attachment. Trojans usually do their damage silently. The first sign of trouble is often when others tell you that you are attacking them or trying to infect them!If your infected try to follow this tips: Computer Security tips
How do I avoid getting infected in the future?
You need to be sure that you trust not only the person or file server that gave you the file, but also the contents of the file itself
Here are some practical tips to avoid getting infected (again). For more general security information, please see our main security help page.
- NEVER download blindly from people or sites which you aren't 100% sure about. In other words, as the old saying goes, don't accept candy from strangers. If you do a lot of file downloading, it's often just a matter of time before you fall victim to a Trojan.
- Even if the file comes from a friend, you still must be sure what the file is before opening it, because many trojans will automatically try to spread themselves to friends in an email address book or on an IRC channel. There is seldom reason for a friend to send you a file that you didn't ask for. When in doubt, ask them first, and scan the attachment with a fully updated anti-virus program.
- Beware of hidden file extensions! Windows by default hides the last extension of a file, so that innocuous-looking "susie.jpg" might really be "susie.jpg.exe" - an executable Trojan!
- NEVER use features in your programs that automatically get or preview files. Those features may seem convenient, but they let anybody send you anything which is extremely reckless. For example, never turn on "auto DCC get" in mIRC, instead ALWAYS screen every single file you get manually. Likewise, disable the preview mode in Outlook and other email programs.
- Never blindly type commands that others tell you to type, or go to web addresses mentioned by strangers, or run pre-fabricated programs or scripts (not even popular ones). If you do so, you are potentially trusting a stranger with control over your computer, which can lead to trojan infection or other serious harm.
- Don't be lulled into a false sense of security just because you run anti-virus programs. Those do not protect perfectly against many viruses and trojans, even when fully up to date. Anti-virus programs should not be your front line of security, but instead they serve as a backup in case something sneaks onto your computer.
- Don't download an executable program just to "check it out" - if it's a Trojan, the first time you run it, you're already infected!
- Finally,You should have a firewall and trusted software in you computer like this:
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Where can i get online computer virus scan?
There are times when you do not want to download anti-virus software. These may include:
* You are on someone else computer and you don't want to install software
* Your computer is too infected or broken to install new software
* You just need to do a quick check, without the hassle of software installation
The solution for virus scanning at those times is to utilize an online virus scanner.
Note: Most online virus scanners requires Internet browser's (internet explore or Mozilla firefox) with ActiveX enabled.
Online Virus Scanners
McAfee FreeScan
McAfee FreeScan helps you detect hundreds or thousands of viruses on your computer. Based on the award-winning McAfee VirusScan engine, FreeScan searches for viruses, including the latest known "in the wild" viruses, and displays a detailed list of any infected files. Should viruses be found, FreeScan even provides links to more information about the viruses and what you can do to clean on your system.
TrojanScan
Trojan horses are a huge security threat. A Trojan is a program that enters your computer undetected, giving the attacker who planted the Trojan unrestricted access to the data stored on your computer. Trojans can transmit credit card information and other confidential data in the background. Trojans are often not caught by virus scanning engines, because these are focused on viruses, not Trojans. Catching such threats would require the use of a Trojan scanner (a.k.a Trojan cleaner, Trojan remover, anti-Trojan).
Malicious Mobile Code E-Mail Virus Protection
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How to remove trojan horse manually for window xp
What is a trojan horse?
Trojan horse is non-self-replicating malware that appears to perform a desirable function for the user but instead facilitates unauthorized access to the user's computer system. The term is derived from the Trojan Horse story in Greek mythology.
a common yet difficult to remove computer threat. This is a type of virus that attempts to make the user think that it is a beneficial application.
What are the purpose and operations?
Trojan horses are designed to allow a hacker remote access to a target computer system. Once a Trojan horse has been installed on a target computer system, it is possible for a hacker to access it remotely and perform various operations. The operations that a hacker can perform are limited by user privileges on the target computer system and the design of the Trojan horse.
It works by hiding within a set of seemingly useful software programs. Once executed or installed in the system, this type of virus will start infecting other files in the computer.
It can spread in a number of ways. The most common means of infection is through email attachments. The developer of the virus usually uses various spamming techniques in order to distribute the virus to unsuspecting users.
These emails contain attachments. Once the user opens the attachment, the Trojan Horse Virus immediately infects the system and performs the tasks mentioned above.
How to remove trojan horse manually on window xp?
Below is the "General" process for removing these nasty things!
1. If you are using and operating systems such as Windows XP you MUST disable your System Restore before attempting any removal.After successful removal, you can re-enable System Restore. Here is how to turn off System Restore:
For Windows XP
1. Log on as Administrator.
2. Right-click the My Computer icon on the desktop and click Properties.
3. Click the System Restore tab.
4. Select Turn off System Restore.
5. Click Apply > Yes > OK.
6. Continue with the scan/clean process. Files under the _Restore folder can now be deleted.
7. Re-enable System Restore by clearing Turn off System Restore.
2.Make absolutely sure you have the latest "paid for" versions of removal tools such as Ad-aware and Search & Destroy. Download here:download this ultimate pro search and destroy
3.Reboot your system in "safe mode". Here is how:
Windows XP
If Windows XP is the only operating system installed on your computer, booting into Safe Mode with these instructions.
* If the computer is running, shut down Windows, and then turn off the power
* Wait 30 seconds, and then turn the computer on.
* Start tapping the F8 key. The Windows Advanced Options Menu appears. If you begin tapping the F8 key too soon, some computers display a "keyboard error" message. To resolve this, restart the computer and try again.
* Ensure that the Safe mode option is selected.
* Press Enter. The computer then begins to start in Safe mode.
* When you are finished with all troubleshooting, close all programs and restart the computer as you normally would.
4. In "safe mode", run Ad-aware, and if still needed,Search & Destroy . If you have the "paid for" versions of these products, make sure you install the "add-ons" they have. For example, Ad-Aware has a special add-on to help remove a very nasty Trojan named VX2 (or Transponder).
5.Reboot your system in normal mode and rerun Ad-Aware and Search & Destroy. Hopefully you will get a clean report.
6.Once your get a clean report, use the same System Restore procedure as above, but this time turn System Restore back on.
I have here a video tutorial how to remove Trojan horse manually in windows xp:
If This Process Does Not Take of the Problem, prepare for some more difficult work. Because there are so many Trojan variations (with new ones showing up every day) the Trojan and anti-virus removal tools may be unable to perform automatic removal. If this is the case, we recommend the following process:
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More Technical Approach
#1 Search Google using the following search term: "toyasofware home page". You should find a site from which you can download a tool called search and destroy.
#2 Download, install and run search and destroy. This tool generates a report (called a log) that contains tons of information on programs (Trojans) that exist on your system. That's the good news ------ the bad news is that it is not a free programs
#3 Go to a site like http://toyasoftware.blogspot.com, read the tips and post your problem in computer to help you solve your problems: list all your problems on your pc
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Problems removing spyware,adware,Trojan horse ,spyware analyzing computer threads, etc.
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Type of Adware
Adware
Adware has become a major problem that has even surpassed the threat of computer viruses in regard to number of infections. These programs have been at the center of major controversy with a handful of supporters and many more critics.
ClickSpring was designed to be a direct-marketing program. The ads it displays may take many different forms such as banners, pop-ups, pop-unders or links built within web pages or sections of the Windows interface. Some of the advertising may including text ads displayed with the ClickSpring application itself or search bars, side bars and search results. The adware is behavioral based and tracks the web sites you browse, enabling it to display ads relevant to your preferences. This is made possible by the program's ability to collect data at any time and report it back to the ClickSpring server, a process that is typically done without user consent. It gathers sensitive data from your browser cache, cookies, temporary internet files and search history.
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types of Malware (Many Faces of Malware)
According to Wikipedia, there are in fact eleven distinct types of malware, and even more sub-types of each.
1. Viruses. The malware that's on the news so much, even your grandmother knows what it is. You probably already have heard plenty about why this kind of software is bad for you, so there's no need to belabor the point.
2. Worms. Slight variation on viruses. The difference between viruses and worms is that viruses hide inside the files of real computer programs (for instance, the macros in Word or the VBScript in many other Microsoft applications), while worms do not infect a file or program, but rather stand on their own.
3. Wabbits. Be honest: had you ever even heard of wabbits before (outside of Warner Bros. cartoons)? According to Wikipedia, wabbits are in fact rare, and it's not hard to see why: they don't do anything to spread to other machines. A wabbit, like a virus, replicates itself, but it does not have any instructions to email itself or pass itself through a computer network in order to infect other machines. The least ambitious of all malware, it is content simply to focus on utterly devastating a single machine.
4. Trojans. Arguably the most dangerous kind of malware, at least from a social standpoint. While Trojans rarely destroy computers or even files, that's only because they have bigger targets: your financial information, your computer's system resources, and sometimes even massive denial-of-service attack launched by having thousands of computers all try to connect to a web server at the same time.
5. Spyware. In another instance of creative software naming, spyware is software that spies on you, often tracking your internet activities in order to serve you advertising. (Yes, it's possible to be both adware and spyware at the same time.)6. Backdoors. Backdoors are much the same as Trojans or worms, except that they do something different: they open a "backdoor" onto a computer, providing a network connection for hackers or other malware to enter or for viruses or sp@m to be sent out through.
7. Exploits. Exploits attack specific security vulnerabilities. You know how Microsoft is always announcing new updates for its operating system? Often enough the updates are really trying to close the security hole targeted in a newly discovered exploit.
8. Rootkit. The malware most likely to have a human touch, rootkits are installed by crackers (bad hackers) on other people's computers. The rootkit is designed to camouflage itself in a system's core processes so as to go undetected. It is the hardest of all malware to detect and therefore to remöve; many experts recommend completely wiping your hard drive and reinstalling everything fresh.
9. Keyloggers. No prïze for guessing what this software does: yes, it logs your keystrokes, i.e., what you type. Typically, the malware kind of keyloggers (as opposed to keyloggers deliberately installed by their owners to use in diagnosing computer problems) are out to log sensitive information such as passwords and financial details.
10. Dialers. Dialers dial telephone numbers via your computer's modem. Like keyloggers, they're only malware if you don't want them. Dialers either dial expensive premium-rate telephone numbers, often located in small countries far from the host computer; or, they dial a hacker's machine to transmit stolen data.
11. URL injectors. This software "injects" a given URL in place of certain URLs when you try to visit them in your browser. Usually, the injected URL is an affïliate link to the target URL. An affïliate link is a special link used to track the traffïc an affïliate (advertiser) has sent to the original website, so that the original website can pay commissions on any salës from that traffïc.
12. Adware. The least dangerous and most lucrative malware (lucrative for its distributors, that is). Adware displays ads on your computer. The Wikipedia entry on malware does not give adware its own category even though adware is commonly called malware. As Wikipedia notes, adware is often a subset of spyware. The implication is that if the user chooses to allow adware on his or her machine, it's not really malware, which is the defense that most adware companies take. In reality, however, the choice to install adware is usually a lëgal farce involving placing a mention of the adware somewhere in the installation materials, and often only in the licensing agreement, which hardly anyone readsThis are very dangerous for our computer? right? best way to prevent this many faces of malwares is to destroy:
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Things need to know about the Danger of Malware, adware and spyware
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Malware
These Malwares,addware and spyware are then very dangerous, not only because they can bypass programs that are supposed to block them, but because once they're installed in your computer, nothing abnormal i showing on the system protected by an HIPS which was bypassed: If the HIPS was killed, the program interface is still showing its status as "OK", "Running" Leaving the user in a false sense of security ( Thinking he is protected, although he isn't). NOTE: these Malwares,adware,and spyware are unable to perform unhooking, and to install, when run is a user-mode account.
one insidious type of TROJAN HORSE is a program that claims to rid a computer of malwares,addware and spyware but instead introducaes malwares on to the computer.(Laptop and desktop)
Malware,addware and spyware is a catch-all term for any kind of code that was written with malicious intent. the most popular form of Malware is the WORM. Worm are self-propagating Malwares that are usally executed as stand-alone code and they fileservers or to any web servers hosting FTP,s Because worm are often implementedusing VBA Macros, they are the most common malwares associated with office documents: one very common vector for spreading worms is the accidental release of an infected word or excel documents.
NOTE: ALL malwares addware and spyware are all Dangerous in computers
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ALL ABOUT MALWARES,addware and Spyware:part 1
PART 1.5 ( TIPS MALWARES INFORMATION )
PART 2 ( TIPS MALWARES INFORMATION )
PART 2.5 ( TIPS MALWARES INFORMATION )
PART 3 ( TIPS MALWARES INFORMATION )
PART 4 ( HOW TO PREVENT MALWARES IN COMPUTERS )
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Scanning, detecting and avoiding Malware, adware and spyware
Two "Critical" security flaws i Mac OS X, and Microsoft OS, both of hwich were closed by applying subsequent security updates, triggered considerable interest in the possible exposure of Mac OS X and MS OS users to malware and spyware. (Malware) malicious software is programs or software designed to infiltrate or damage a computer system without the owner consent. The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code. The term " Computer Virus" is sometimes used as a catch-all phrase to include all types of malware, including true viruses.
This FAQ:
- Addresses recent developments in malware and spyware targeting the Mac.
- Provides general advice for detecting and avoiding both malware and spyware.
- Applies to Mac OS X 10.2 Jaguar through Mac OS X 10.5 Leopard®.
- Applies to MS OS, windows,vista and windows 7
Install and use anti-virus software
The latest anti-virus applications can detect more than viruses, such as malware distributed in scripts embedded within documents sent as e-mail attachments. Accordingly, installing and using an anti-virus application, such as scan and detect malware and adware:download security/malware can help detect malware and prevent its harmful effects. However, as new methods of attack are always in development, it is vital to regularly or automatically update the virus definition files used by your anti-virus software.
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Reports how Malware are dangerious in our Computer
1. Botnet continues massive H1N1 malware campaign
2. Lawsuit seeks information on federal surveillance of social networking sites
3. Opinion: The hackability of the smart grid
4. Security firm retracts 'black screen' claims, apologizes to Microsoft
5. Preston Gralla: Prevx on Windows Black Screen of Death: We blew it
6. Sprint downplays report it shared GPS data with feds
7. IT Blogwatch: Did Sprint violate customer privacy 8 million times?
8. U.K. hacker granted short extension in extradition case
9. Security Manager's Journal: A fresh start at a company that gets security
10. Seth H. Weintraub: Google closes paywall back door...sort of
11. Amir Lev: Domain registration fraud spam
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Have Malware in your computer?
Have Malware in your computer?
My computer is infected with this "Malware and Adware" so i decided to have a trusted software to make it destroy all malware and adware or spyware. i read a lot of blogs regarding this problem. I've love to download movies, music, software. i used also lots of down loading software's through bearshare, limewire, kazaa, and many other downloader software, i always have a malmare on my computer. i decided to buy a malware and spyware protections. now, my free from spyware and malware i dont have problems anyonemore.
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tips to avoid malware and adware
What is Malware?
short for malicious software is programs or software designed to infiltrate or damage a computer system without the owner consent. The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code. The term " Computer Virus" is sometimes used as a catch-all phrase to include all types of malware, including true viruses.
Here are a few tips:
1. Don’t use file sharing applications. If I see Limewire, Bearshare, or Kazaa and etc shareware on a program list in a PC I can find malware approximately 100% of the time. There is simply no way to safely download with these programs because you can’t trust the source.
2. Never open an email attachment if you don’t know what it is. Even if you know the person who sent the email beware of attachments. Many computers with infections will send out email to everyone on their address book without the owner ever being aware.
3. If you get pop-ups when opening a web page don’t click inside the pop-up to close it. Always click the red “x” in the upper right corner. The “cancel” or “close” button in the pop-up might have unintended effects.
4. If you get a message from your computer warning you that it is infected and you need to download such and such software to remove the virus, don’t do it. At this point you are already infected, downloading the fake virus remover will only make it worse. No legit software ever uses this tactic.
5. Avoid free downloads programs and movies unless you are absolutely sure you can trust the source. Often these freebies are packaged with a good deal of adware, so be careful.
Most of the time good common sense will keep your computer safer than whatever virus protection you have installed. Start practicing safe web viewing and you will find you rarely have a problem with malware.
This tips are for to ensure you Computer 100% percent free from malware and adware.
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Search and Destroy Malware and adware
What is Malware?
short for malicious software is programs or software designed to infiltrate or damage a computer system without the owner consent. The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code. The term " Computer Virus" is sometimes used as a catch-all phrase to include all types of malware, including true viruses.
Software or Programs is considered malware based on the perceived intent of the creator rather than any particular features. Malware includes most computer virus, worms, trojan horses, back doors, spyware and rootkits dishonest crimeware and adware and other malicious and unwanted software. read more....
What is Adware?
can be classified as privacy-invasive software.
Some adware is also shareware, and so the word may be used as term of distinction to differentiate between types of shareware software. What differentiates adware from other shareware is that it is primarily advertising-supported. Users may also be given the option to pay for a "registered" or "licensed" copy to do away with the advertisements. read more....
What is Spyware?
Spyware is a type of Malware that is installed on compoter and collects information about users without their knowledge. The presence of spyware is typically hidden from the user. Typically, spyware is secretly installed on the user's Personal Computer. Sometimes, however, spywares such as keyloggers are installed by the owner of a shared, corporate, or Public computer on purpose in order to secretly monitor other users.
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