We have all heard the term trojan horse, but what exatly is it? A trojan horse is a destructive program that masquarades as a harmless application. Unlike viruses,trojan horses do not replicate themselves,but they can be just as destructive. one of the most dangerous examples of a trojan is a program that promises to rid your computer of viruses into your computer.
The trojan can be tricky. Who hasn't been online and had an advertisement pop up claiming to be able to rid your computer of some nasty virus? Or,even more frigthening,you receive an email that claims to be alerting you to a new virus htat can threaten your computerfrom viruses if you simply download their free,attached software into your computer. you may be skeptical but the software looks legimate and the company sound reputable. You proceed to take them up on their offer and download the software. In doing so,you have just potentially exposed yourself to a massive headache and your computer to a laundry list of ailments.
When a trojan is activated numerous things can happen. Some trojans are more annoying than malicious. some of the less annoying trojans may choose to change your dekstop settings or add silly desktop icons. The more serious trojans can erase or overwrite data on your computer,corrupt files,spread other malware such as viruses spy on the user of a computer and secretly report data like browsing habits to other people,log keystrokes to steal information such as passwords and credit card numbers,phish for bank account details (which can be used for criminal activities0,and even install a backdoor into your computer system so that they can come and go as they please.
To increase your odds of not encountering a trojan,follow these guidelines.
1. Remain diligent
trojan can infect your computer through rogue websites,instant messaging,and emails with attachments. Do not download anything into your computer unless you are 100 percent sure of its sender or source.
2. Ensure that your operating system is always up-to-date.
If you are running a microsoft windows oprating system,thisnis essential.
3.Install reliable anti virus software
It is also important that you download any updates frequently to catch all new trojan horses,viruses,and worms. Be sure that the anti virus program that you choose can also scan e-mails and files downloaded through the internet.
4. consider installing a firewall
A firewall is a system that prevents unathorized use and access to your computer. A firewall is not going to eliminate your computer virus problems,but when used in conjuction with regular operating system updates and reliable anti virrrus software,it can provide additional security and protection for your computer.
Nothing can guarante the security of your computer 100 percent. however,you can continue to improve your computers security and decrease the possibility of infection by consistently following these guadilines.
Viruses is becoming increasingly rampant,keeping keep your computer clean of viruses that is a must for us who want to condition our PC more optimal and convinient to use. here are 6 ways to avoid computer viruses :
1. Use Antivirus
of course this is the most important. Would not want anti-virus as a guard that will prevent a variety of viruses. oh yes..,If you do not have not money use pirated antivirus free antivirus ....use only. Not really a great lost in combating internet viruses.
2. Update
Do not forget to always any update for the sake of computer security. not only just an updated anti-virus. EVERYTHING..whether it is operating system,installed software and drivers not no software or software perfect...there must be a security loopholes. Do not believe programmer who said "my software perfect in computer security" to close the security hole that we must update and update. because the internet virus also always updates and updates.
3. Be careful when browsing
most internet viruses spread of pornographic websites and warez ( illegal mp3,software pirated,etc,). If you do not want exposed to the virus so do not go there this the best way to prevent computer viruses. If there is warning from your browser its better just ignore those sites. Or during a visit to the website it appears the dialog box whose contents asks to install something...just been ignored. Be wary of such sites usually use word games such as 're giving a gift to you. in fact it is an internet virus that can interfere with computer security.
4. always scan files in the download
Any files that you download even if it comes from a trusted website like this blog. It must still be scanned using an anti virus. For example after you download the free ebook,what you believe it germ-free ebook uh mean virus free. Or when a script is the script for free..what it really safe to prevent it is always better than cure.
5. Beware email
One of the internet virus is spread thruogh email. especially if you got email that contains files such as EXE,VBS,BAT. Plus it was sent by strongers...may-be internet virus that shut down the computer and reboot and the message "Welcome to hard disk capacity is increased" How not to grow,all the deleted files.
6. Articles read on security computer
The development of a computer walk like a panther...fast possible computer security articles you read a month ago already ingested absolete era. So keep-keep reading variuos articles good computer.
benefit of the computer was indeed a lot but when same time also appeared the things are troublesome to security computer was awake. Tips trick hopefully avoid viruses computer is useful to you.
Spam, No bodys like it. No body wants it. No,we aren't talking about the canned meat,but those unsolicited,unwated,irrelevant,or even inappropriate messages that hitour email in mass quantities. While most mailboxes have some type of spsm filtering software built into their system,they never seem to do a very good job of catching what you want them to catch,and letting through what you want them to let through. Therefore,it becomes increasingly important to turn to some type or additional spam filtering product. One such filtering ssystem,designed for outlook and outlook express users,is receiving rave review for its superior detection and low rate of false positives(what you want to get thgough does)
Couldmark Desktop,famerly know as SpamNet and safety bar,uses a unique community-based filtering process. This community-based filtering system relies on users to report any new spam. Within minutes of a spammer being reported,they are placed on a blacklist. At that point,no other member will receive that particular spam. Couldmark also applies the same basic process to phishing emal scams.
What is interesting is how couldmark creates a digital reputation model of reporting spam. Each user start with a neutral reputation. A users reputation will rise if they are among the first to edintify undesirable content. On the flip side of the coin a users reputation falls when they falsely report spam. The result is a system that automated,highly scalable and resistant to tampering.
An added bonus is that because the software doesnt depend upon the users to configure its settings,it installs in minutes in is easy to use. Couldmark block over 98% of spam of reaching your inbox and boasts over one million users worldwide.
The cost of program is $39,95 for a one-year subcription. The subcription is renewable annually. For those wanting to test drive the product,a free 15- days trial period for either your outlook or outlook express is available.
This article includes a recommendation for any administrator or home user who wants his computer more secure. The following are tips on computer security system windows 7 :
Enable BitLocker
BitLocker encryption can be used to encrypt any volume on the hard drive,including system boot,and even removable media,such as USB. You can now right click on a drive and encrypt any volume from within Windows Explorer. There are several methods of protection,including the combination of the trusted platform module (TPM)chip,pin,paswords,and smart cards. You can encrypt removable drives one at a time or require that all removable media are encrypted by default. Media encryption FAT,exFAT,FAT32 and can also be done with windows xp and windows vista client,but the data is encrypted read-only and can not be re-encrypted.
Raising the bar slider UAC
User Account Control has been significantly enhanced to become less intrusive and more intelligent in distinguishing between legitimate and potentially dangerous on windows 7. However,depending on wheter you are logged on as administrauor or standard user,some people may have installed the windows 7 default UAC security setting one level lower than some of the recommended or otherwise. Standart users set the default UAC security to the most secure setting,while the administrator which is a notch below the highest setting,potentially more risky.
Microsoft is creating access to UAC so much easier to allow administrators and users to customize the security level of the UAC. After installing aj the software and initial configuration of windows 7 as you want, i suggest increasing the UAC slider bar to the most secure settings. No need to fear the warnings are annoying as UAC in maximum mode,you'll find fewer UAC prompts than you did in windows vista.
Patch Every Time in
The default setting of windows 7,windows update services configurf to download and install the update file microsoft operating systems and applications in a timely manner. Several studies have shown that the microsoft software in the worlds most widely patched software. Microsoft allows installing the software and allows the process to ensure that all programs 2n be "patched"particularly browsers plug-ins. Malicious hackers to quickly move to a place that is often patched earlier and secretly exploit the end user. Always enable automatic updates.
Install anti-spam and anti-malware
the biggest threat to the client system is a trojan horse,the outlook patch fake,fake anti-virus scanners,fake codecs. The danger is they do not directly attack you but they will be ushered in advance with deceptive language and then execute when you click the requested approval. Even the most security technician can be foolf. It takes flair to be able to distinguish between seduction an the truth. You must install and use anti-spam and anti-malware software up-to-date.
Turn on SmartScreen filter in internet Explorer 8
When you first start IEB,you will be askf if you want to enable the SmartScreen filter. Which checks the local database or a microsoft site to see if you browse the web site before it is safe or there is a potential danger. SmartScreen also examine the many dangerous thing like cross-site scripting. SmartScreen is only visible if the result had previously been activated. Maybe there are users who want to disable this setting,while most users should make sure it is activated. If you have been running IEB,SmartScreen filter checks by selecting from the safety menu.
Back up data
We all have been using computers for a long time,and we know that the worst thing that could happen anytime. Ideally,if a computer is a multi-year warranty,but to minimize the damage when it crashes your computer,be sure to back up data replacement windows 7 includes a program that can be relied on to set up in control panel>system and security>Backup and restore. Or just search the keyword Backup in help and support to learn everything you need to know about windows backup.
This article includes items that should be done to make windows 7 as a more secure system. If once you are tricked into running a trojan horse executable,you will have a significantly smaller risk than the average user. Not until the turn off windows 7 (UAC,Protected Mode Internet Exploqer, Windows Firewall,etc.)
Criticsms and suggestion are i need to progress this blog...thanks for his visit.
A keylogger is a program that runs in your computers background secretly recording all your keystrokes.Once your keystrokes are logged,they are hidden away for later retrieval by the attacker.The attacker then carefully reviews the information in hopes of finding password or other information that would prove useful to them.
Keyloggers can be either software or hardware based. Software-based keyloggers are easy to distributean infect,but at the some time are more easily detectable. Hadrware-based keyloggers are more complex and harder to detect. For all that you know,your keyboard could have a keylogger chip attached and anythiing being types is recorded into a flash memory sitting inside your keyboard,keyloggers have become one of the most powerful applications used for gathering information in a world where encypted traffic is becoming more and more common.
As keyloggers become more advanced,the ability to detect them becomes more difficult. They can violate a users privacy of months,or even years,without being noticed. During that time frame,keylogger can collect a lot of information about the user it is monitoring.
A keylogger might be as simple as an.exe and a.dllthat is placed in a computer and activated upon boot up via and entry in the registry.Or,the more sophisticated keyloggers,such as the Perfect Krylogger or ProBot Activity Monitor have developed a full line of nasty abilities including :
= Undetectable in the process list and invisible in operation
= A kernel keylogger driver that captures keystrokes even when the user is logged off
= A remote deployment wizard
= The ability to capture http post data (including logs-ins/password)
= The ability to create text snapshot of active applications
= The ability to timestamp record workststion usage
= HTML and text log file export
= Automatic e-mail log file delivery
All keyloggers are not used for illegal purpose. A varietyof other uses have surfaced. K eyloggers have been used to monitor web sites visited as a means of parental control over children. They have been actively used to prevent child pornography and avoid children coming in contact with dangerous element on the web.
Every day computer viruses distrupt and destroy the computer system. Share a few thing once there who do not know kend of computer viruses,the following eight of the most commoncomputer virusesthat could potentially ause damage.
¤ Virus : Trojan Loader
A trojan horse that attempts to download remote files. It will inject a.DLL file into the Explorer.Exe process causing system instability.
¤ Virus : W32.Beagle.co@mm
A mass-mailing warm that lowers security setting. If can delete security-related registry sub keys and may block access to security-related websites.
¤ Virus : Backdoor, Zagaban
A trojan horse that allows the compromised computer to be used as a covert proxy and which may degrade network performance.
¤ Virus : W32/Netsky-p
A mass-mailing worm which spreads by emailing it self to addresses produced from files on the local drives.
¤ Virus : W32/Mytob-GH
A mass-mailing worm and IRC backdoor trojan for the windows platform. Messages sent by this worm will have the subject chosen randomly from a list including titles such as : notice of account limitation,email account suspension,security measures,member support,important notification.
¤ Virus : W32/Mytob-EX
A mass-mailing worm and IRC backdoor trojan similar in nature to W32-Mytob-GH.W32/Mytob-EX runs continuosly in the background,providing a backdoor server which allows a remote intruder to gain acces and control over the computer via IRC channels. This virus spreads by sending (IRC) network. Additionally,they can spread through various operating system vulnerabilities such as the LSASS (MS04-011).
¤ Virus : Zafi-D
A mass-mailing warm and a peer to peer warm which copies itself to the windows system folder with the filename norton update.exe. It can then create a number of files in the windows system folder with file names consisting of 8 random characters and a DLL extension. W32-D copies it self to folders with names containing share,upload,or music as ICG 2005 a new!.exe or winamp 5.7 new!.exe. W32/Zafi-D will also display a fake error message box with the caption "CRC : 04FGBH" and the next" Error in packed file !"
That's eight computer viruses that can attack your computer. The best thing is to alert and update the latest Anti-Virus.
What is encryption ?
Encryption software is used to make the system more secure. This article discusess how title software include below :
1. Encryption email
2. Encryption file
The above program that can help encrypt information indeed,many programs out side that helps computeq system more secure. But the program is a good place to start and has the added benefit to the source code available.
Encryption can also stop people from accessing information or making it difficult to get such important information,pasword or important things that are sensitive in the file. It could also tell the encryption algorthm in which the use to protect a computer system let more secure. Encryption system can also be destroyed if the hacker has to understand this encryption method.
Now why encrypt email ?
Please know that email is much more secure then paper mail. First,the data can easily be accessed via the internet. Second,electronic data is very simple to copy.
How to encrypt email ?
There are many program out how to encrypt email. Such as PGP(pretty good privacy)are popular(http://www.pgpi.org) is a program that provides electronic mail and other wise do not have one of privacy.
PGP can help encrypt emails and when the encryption the message looks like random characters. PGP has also proved able to resist a suplisticated system of analysis that indicated to read the encrypted text.
Subsequent why encryption file?
The answer is in what is stored in computers. It the computers. It the computer are financial data and importand information like sosial security,email address,account number,pasword would be vulnerable to theft when connected to the internet.
How to encrypt a file ?
Try to go to this address axcrypt file encryption software(http://axcrypt.sourceforge.net)selt-described as free personal privacy and security for windows 98/ME/NT/2K/XP with AES-128 file encryption decrypt and open in the original application.
Enough of this article may help and increase knowledge in maintaining a system to make it more secure.
Let us learn together what is a intrusion detection system,the following is an article i read time search. Intrusion detection system(IDS)is an important pat of security strategies that can be defined like this :
Purpose of the intrusion detectim system is to detect unathorized acces or abuse of computer system. Intrusion detection system is a kind of search for the computer as an alarm sound and even take corective action it there is an intruder is detected intrusion. Detection schemes generally have two categories :
Anomaly detection and Detector detection
Anomaly detection as a read is looking for behaviour that deviates from the normal use of the system while the detection of the detector is to look for behaviour that match know attack serious. Much time and effort invested in intrusion detection system, here are links to sites that discuss it with some effort.
http://www.cerias.purdue.edu/about/history/coast _resources/intrusion_detection/
There are categories of sub-system is a network intrusion detection system(NIDS)system serves to monitor packets on the cable network and look for suspicious activity,the system can monitor a computer over a network.
Now clearly the purpose of this intrusion detection system and now anyone who breaks into your system?
One is those people out side the network,causing chaos to your system can also be called a hacker.
The next how the intruder got into the system?
That by using a trick tricks of the trade with a high level though a hole in the system,eventually many ways to access the system even from a disuance.
How to stop the infiltration of a person?
There are some freeware detection system/intrusion shoreware as well as commercial intrusion detection system.
Open source intrusion detection system.
Here are some open sovrce intrusion detection system :
*AIDE (http://sourceforge.net/project/aide)
*File system saint (http://sourceforge.net/project/fss) saint hort-based file sysuem that is ligh weight intrusion detection system with primary focus on speed and ease of use.
*Snort (www.snort.org)
snort is the most widely used in the world,which can prevent the open source network intrusion and detection system thau uses a rule-driven language,or simply the method of examination such as the protocol,signatures and anomalies.
Intrusion detection system commercial.
The following is a commercial detection sysuem :
*Tripwire (http://www.tripwire.com)
*Touch technology inc (poly center security intrusion detector) => http://www.ttinet.com
*Internet security system (real secure server sensor) =>http://www.iss.net
*eEye digital security (secure iss web server protection) => http://www.eeye.com
Just so tried of this article is the hand,my be useful for you even though i have not understand.
There is one law school thesis on money laundering that he often heard the term google to come online and ready reference. This proved to be useful for him and the process of waiting his paper. After several months of doing that,he was confronted with a strange problem that is not related to money laundering with the same kinds of words,at firts he thoughnight be wrong on the internet system and then rationalize not there is an error in the search engine he users. As the continous occurrence of it made him think some one has to tap.
The above situation is not isolated. There are a lot of people get caught up in technology problems that confuse the mind,but actually can be answered with two word and that is spyware and adware. The term spyware was first created in 1995 popularized later in year 2000,spyware is computer software that can infiltrate into a personal computers users. This can be done by studying the keystrokes,web brongsing hostory and scanning the user's hard drive.
Spyware can vnderstand and be able to spy villain because its use benefical to society but how about spyware to intercept credit card details and the like.
What ordinary people can do to protect themselves is to block spyware and all other software programs similar to it,such as adware and malware. This can be done easily by availing online is adware and spyware blocker program,this program can block and remove spyware programs that exist and to avoid installing malicious programs on your computer.
Spyware,adware,malware are not like virus themselves but they can make a hassle to anyone and to be discripted in a personal computer. One is a program of infections software programs,slow computer that interfere with daily activities.
In some infections,spyware is not even clear as the bad guy but can get away with crimes. The best way is to have a blocker that is ready in use to prevent the dangers that occur during the time.
So,beware of the computer that is not fair as usual..
When you surfing the web may learn about information and you do nou want to advertise your self,this is true if your sistem does not cotain software viruses or malware,specially the available information include your IP Address,your country,you computer system,and other information even other people know your name it your computer support.
How do people find out information about you?
When you visit another web site,information about you will be taken or information on imtercopled and used by other to track your internet activity.
How do you stop this ?
Using the web anonymously there by stop leaving a trail for other to find,making it difficult those who want to know who you are.can also use an anonymous proxy which helps protect you,the proxy server to hide your IP address and the difficulty to track you.
How to get anonymous proxy ?
Many vendors who sell anonymous proxy,there is also a free server available to you, these two product Guardster and Shadowsurf.
For Guardster www.guardster.com
offer a variaty of services anonymous access on the web
For Shadowsurf www.shadowsurf.com
Shadowsurf provides free surfing at their site
Other product of interest considering the new about the google search engine found for china goverment is anonymizer www.anonymizer.com developed new anti-censorship solution that enables citizens to security access china internet
Does an anonymous proxy 100% safe ?
No,but it would better if you use a proxy
First , you can use encripted to hide your surfing, this article does not go detail about this,but in a web search you will find lots of information about this
the second , deleting cookies after us
thrid , you can configure your browser to delete the java script,java,and active content of this leads to a limitation if you think about the costs,benefits and action
next ?
Wish you safe surfing in the intrnet
How Recognize If The Computer Is Infected With Bot
Bots is an inportant thing thau is used in today's computer on the internet. Bot is an application that fuction to run automatically when the user protection for online. There are several cases of bot can be dangerous. So,how can you know if the computer is infected with bot? You can find the following tips :
==> You can tell by looking whether deliberately retricted your internet activity. There are different types which can be dangerous on a computer bot. Some bots will cause denial of service attack to take place. It is the user who can not access resources on the computer this is one the main ways how do you know the computer is infected with bot
==> You can find out the number of computer virus found on your computer during a virus scan although the typical anti-virus program updates it self frequently and your perform and automatic scan,there are cases where the new virus scan sneak into your computer. Malicous bots will have a lot of new virus on them. Means you have to careful if you are online.
==> One the best ways to find out what it your computer is bot infected is to check how much spam in your email account. Bots are very effective in creating the spam can be sent to the infected computer. It can a dangerous email server that has a strong spam filter. The reason why this is avoid when sending spam bots is the cose on system that work together to send different pieces of spam. This accurs through a botnet that can build a bot to infect other computer and spread to other computer.
==> One more thing that can really knows is if you live near a bot central server. Bot become a global problem in many countries that have a bot control server sends to a computer that is not guilty this a high need attention.
==> You can be sure that the firewall of the anti-virus program fully updated and contains the latest patches. After updating the program,you can run a scan to see if your computer is infected with a bot.
==> Prevention is one inportant thing to be used although it has a firewall program that can help protect your personal information while online. Do not forget to avoid spam emails tha may sound like a lot. This is one way how a bot can spread to computers tha can be prevented.
==> You can find out by looking at viruses and spam you have to your computer. Ensure your computers is protected and can help you avoid them,so that only good bots that can help your computer process.
Hopefully your computer is protected from Bot....,and thank you..!
