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Virus Alerts, Security, Hoaxes
Computer-Firstaid - Your Computer 9-1-1 Service
Although the vast majority of the Internet is safe to visit, there are some areas of cyberspace that pose potential security and privacy risks. Using Norton Internet Security, you can protect yourself and your family from the following Internet-based threats:
Privacy settings:
The default setting is Medium. It provides a good balance between security benefits and possible issues of convenience and performance. To protect credit card information and other sensitive data from being sent out over the web, click Confidential Info. To control specific Security settings, click Custom Level. If you change the Security settings and want to revert to the original settings, click Default Level. Add Blocking - Many sites use banner ads in their web pages that often employing animated graphics to get the attention of visitors. If you find banner ads to be distracting, you can block them using Norton Internet Security. In addition, you can also use the ad blocking feature to block specific ads that are featured on a web page. Virus Tips:
What are Trojan Horses? - Netbus - Back Orifice - SubSeven - Other They are very dangerous! Trojans or often called
backdoors are programs
which will most be sent via email, instant-messengers or
filesharing-tools.
If you run a trojan file it will install itself on your computer to get
run every time you boot up your machine. Trojans opens a port (channel)
on your system which can be used by an attacker to connect to your
computer.
Trojans can enable almost everything for an attacker to do harmful
things
like viewing/modifying/deleting data, watching you when you are working
or surfing the web, etc. Depending on the trojan there can be thousands of
functions built in which can be remotely used by any attacker to spy
you. NetBus can be placed on your system in the same way as Back Orifice, and the same rules about programs and installers applies here as well. 99% of the time NetBus is gotten when you download a program from the internet, be it a freeware game on your friends web page, to a members only warez ftp site... It can be an exe installer of itself, OR can be hidden inside a REAL setup.exe, usually planted in it and totally separate from whomever released the actual program. NetBus is very similar to Back Orifice, and has many of the same features. It also has more features added, which are there only to annoy and interfere with the computers operator. However (in NetBus v1.60 and above) there is also a command which allows you to remove the server totally (Which actually works.) There are three versions of this program which are still in use. Versions 1.5x, 1.60, and 1.70. Each have a different removal process so we have included sections for each. Our scanner on the page will also report this version to you. Unfortunately with version 1.70 (and above) the port can be changed from 12345. This brings the same scanning problem we have with BackOrifice, as we can only scan one port. If you are infected with a NetBus server on a port other than 12345, our scans cant find it to tell you. In this case you would be better off looking at your registry and looking for lines similar to the ones NetBus installs (Shown in the 1.70 removal instructions.) We would like to encourage safe internet usage when it comes to downloads and programs.. Never accept an installer, or an exe from a non-reputable site. Back Orifice is a remote administration system which allows a user to control a computer across a tcpip connection using a simple console or GUI application. On a local LAN or across the internet, BO gives its user more control of the remote Windows machine than the person at the keyboard of the remote machine has. BO is small, and entirely self installing. Simply executing the server on any windows machine installs the server, moving the executable into the system where it will not interfere with other running applications. To ease distribution, BO can also be attached to any other windows executable which will run normally after installing the server. Once running, BO does not show up in the task list or close-program list, and is rerun every time the computer is started. The filename that it runs as is configurable before it is installed, and it's as easy to upgrade as uploading the new version and running it. SubSeven was made to fill in the gaps left by NetBus. NetBus was the first 'point and click' trojan that made it very easy for hackers to abuse an infected system. The makers of SubSeven wanted to take this even further and give the hackers even more control than NetBus ever could. SubSeven can do everything that NetBus can do. This includes things such as File controls
This is how they prevent getting caught breaking into other computer systems and get You in trouble! The SubSeven trojan can also be configured to inform someone when its infected computer connects to the internet, and tells that person all the information about you they need to use the trojan against you. This notification can be done over an IRC network, by ICQ, or by email. Other Types/Expanded threats exist outside of commonly known definitions of viruses, worms, and Trojan Horse that may provide unauthorized access, threats to system or data security, and other types of threats or nuisances. Expanded threats may be unknowingly downloaded from Web sites, email messages, or instant messengers. They can also be installed as a by-product of accepting the End User License Agreement from another software program related to or linked in some way to the expanded threat. Adware: Programs that secretly gather personal information through the Internet and relay it back to another computer, generally for advertising purposes. This is often accomplished by tracking information related to Internet browser usage or habits. Adware can be downloaded from Web sites (typically in shareware or freeware), email messages, and instant messengers. A user may unknowingly trigger adware by accepting an End User License Agreement from a software program linked to the adware. Dialers: Programs that use a system, without your permission or knowledge, to dial out through the Internet to a 900 number or FTP site, typically to accrue charges. Hack Tools: Tools used by a hacker to gain unauthorized access to your computer. One example of a hack tool is a keystroke logger -- a program that tracks and records individual keystrokes and can send this information back to the hacker. Joke Programs: Programs that change or interrupt the normal behavior of your computer, creating a general distraction or nuisance. Malware: is software designed to infiltrate or damage a computer system without the owner's informed consent. It is a portmanteau of the words "malicious" and "software". 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. Remote Access: Programs that allow another computer to gain information or to attack or alter your computer, usually over the Internet. Remote access programs detected in virus scans may be recognizable commercial software, which are brought to the user’s attention during the scan. Security Risks: Threats which do not conform to the strict definitions of Viruses, Trojan Horses and Worms, but which may present a threat to your computer and its data. Spyware: Stand-alone programs that can secretly monitor system activity. These may detect passwords or other confidential information and transmit them to another computer. Spyware can be downloaded from Web sites (typically in shareware or freeware), email messages, and instant messengers. A user may unknowingly trigger spyware by accepting an End User License Agreement from a software program linked to the spyware. Viruses, Worms and Trojan Horses: A virus is a program or code that replicates; that is, infects another program, boot sector, partition sector, or document that supports macros, by inserting itself or attaching itself to that medium. Most viruses only replicate, though, many do a large amount of damage as well. A worm is a program that makes copies of itself; for example, from one disk drive to another, or by copying itself using email or another transport mechanism. The worm may do damage and compromise the security of the computer. It may arrive in the form of a joke program or software of some sort. A Trojan Horse is a program that neither replicates nor copies itself, but causes damage or compromises the security of the computer. Typically, an individual emails a Trojan Horse to you-it does not email itself-and it may arrive in the form of a joke program or software of some sort. Hoax Warnings - Please disregard the hoax emails - they contain bogus warnings usually intent only on frightening or misleading users Hello Possible Victim of a Hoax In the future do not pass on any e-mail regarding a virus, chain letter, etc. A hoax is a form of cyber terrorism. These types of e-mails cause to overload servers, e-mail systems and for some who have fallen victim possibly time and important data. They maybe disguised to look legitimate. When sending to multiple listing (people in your address book) address the e-mail to yourself, and bcc: to all others you are wishing to send the same e-mail to. This protects your family, friends and clients e-mail addresses from not only perpetrators of such viruses, hoaxes, but others who do not wish their e-mail address given out freely. This reduces the chance of junk and unwanted/unsolicited e-mail. Never click remove me/to be removed from any junk e-mail or mailing list, for this may send information to the sender you may not wish them to have or just add you to another mailing list. http://www.symantec.com/avcenter/hoax.html http://www.f-secure.com/virus-info/hoax/ |
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