Spring 2007Spring 2007

www.umsl.edu/~iclabswww.umsl.edu/~iclabs

DefinitionsDefinitions VirusVirus

A virus is a piece of computer code that A virus is a piece of computer code that attaches itself to a program or file so it can attaches itself to a program or file so it can spread from computer to computer, infecting spread from computer to computer, infecting as it travels. Viruses can damage your as it travels. Viruses can damage your software, your hardware, and your files. software, your hardware, and your files.

WormWorm A worm generally spreads without user action A worm generally spreads without user action

and distributes complete copies (possibly and distributes complete copies (possibly modified) of itself across networks. A worm can modified) of itself across networks. A worm can consume memory or network bandwidth, thus consume memory or network bandwidth, thus causing a computer to stop responding. causing a computer to stop responding.

Definitions (cont…)Definitions (cont…) SpywareSpyware

Spyware is any technology that aids in Spyware is any technology that aids in gathering information about a person or gathering information about a person or organization without their knowledge. It organization without their knowledge. It Can overload your system and shutdown Can overload your system and shutdown other services.other services.

Tojan HorseTojan Horse Computer program that appears to be Computer program that appears to be

useful software, but instead useful software, but instead compromises your security and causes a compromises your security and causes a lot of damage. lot of damage.

How Do We Get ThemHow Do We Get Them

Opening EmailOpening Email

Visiting Web SitesVisiting Web Sites

Installing SoftwareInstalling Software

Just having a Computer on a NetworkJust having a Computer on a Network

How Do You Protect YourselfHow Do You Protect Yourself

Educate YourselfEducate Yourself

AntiVirus ProgramsAntiVirus Programs

Patching and UpdatingPatching and Updating

AntiSpyware ProgramsAntiSpyware Programs

EducationEducation

Don’t open emails that looks “fishy”Don’t open emails that looks “fishy” Don’t visit “bad” websitesDon’t visit “bad” websites Only install software from “Trusted” Only install software from “Trusted”

vendorsvendors Scan files before opening themScan files before opening them Visit websites like Microsoft, Visit websites like Microsoft,

Symantec, and Apple to get informed Symantec, and Apple to get informed of new security alerts.of new security alerts.

AntiVirus ProgramsAntiVirus Programs

We use Symantec AntiVirusWe use Symantec AntiVirus It should be installed on all systems It should be installed on all systems

on campus.on campus. It is also available for personal use at It is also available for personal use at

home. home. You can download the latest version You can download the latest version

atat www.umsl.edu/nortonwww.umsl.edu/norton

Norton AntivirusNorton Antivirus Start – Programs – Symantec Security Client – Symantec AntiVirusStart – Programs – Symantec Security Client – Symantec AntiVirus

Norton Antivirus UpdateNorton Antivirus Update After Clicking Live UpdateAfter Clicking Live Update

This goes out to Symantec and pulls the most recent This goes out to Symantec and pulls the most recent updates from their servers. updates from their servers.

For campus computers, this is done automatically for you, For campus computers, this is done automatically for you, and you do not normally need to do this.and you do not normally need to do this.

Norton Antivirus Auto Update Norton Antivirus Auto Update from Homefrom Home

In Symantec AntivirusIn Symantec Antivirus File menu – Schedule UpdatesFile menu – Schedule Updates

Check the box to Enable.Check the box to Enable. Click the Schedule Button to choose a Time.Click the Schedule Button to choose a Time.

System Auto-protectSystem Auto-protect The most important component of SymantecThe most important component of Symantec It keeps your system protected when you perform tasks.It keeps your system protected when you perform tasks. Configure menu – File System auto-protectConfigure menu – File System auto-protect

Scanning Your SystemScanning Your System Scanning looks for problems that may already exist on you systemScanning looks for problems that may already exist on you system Scan menu – Computer – choose the Drives to ScanScan menu – Computer – choose the Drives to Scan

What Happens when a Virus is What Happens when a Virus is DetectedDetected

A popup message will appear on screenA popup message will appear on screen It tells the file, location, and action taken.It tells the file, location, and action taken. Action should be cleaned, quarantined, or Action should be cleaned, quarantined, or

deleted. That means it is working.deleted. That means it is working. For any other action like “none taken” call the For any other action like “none taken” call the

helpdesk.helpdesk.

Patching and UpdatingPatching and Updating One of the best things that you can do One of the best things that you can do

to protect your system is to Patch it.to protect your system is to Patch it. Most people believe that their system Most people believe that their system

got infected because of a failed got infected because of a failed AntiVirus product, but they are wrong.AntiVirus product, but they are wrong.

Most infected systems become Most infected systems become infected because of poorly patched infected because of poorly patched systems.systems.

Patching is a simple, easy, and free Patching is a simple, easy, and free way to protect your system.way to protect your system.

How you patch a systemHow you patch a system To do it manually, To do it manually,

use the windows use the windows update Icon on your update Icon on your start menu.start menu.

To do it automatically To do it automatically got to Start – Settings got to Start – Settings – Control panel and – Control panel and choose Automatic choose Automatic Updates.Updates.

How We as a Campus PatchHow We as a Campus Patch Labs and Classrooms are Labs and Classrooms are

patched automatically by a patched automatically by a system called Software Update system called Software Update Services the day after a patch Services the day after a patch is released and tested. is released and tested.

Nothing else is needed.Nothing else is needed.

Faculty and Staff Systems that Faculty and Staff Systems that belong to the UMSL-USERS belong to the UMSL-USERS Domain are patched by SMS as Domain are patched by SMS as soon as they have written and soon as they have written and tested the package. tested the package.

It is still a good idea to patch It is still a good idea to patch yourself.yourself.

AntiSpyware ProgramsAntiSpyware Programs Spyware is typically placed on your system by Spyware is typically placed on your system by

visiting websites and installing software.visiting websites and installing software. Typical signs that you have spywareTypical signs that you have spyware

You have a lot of popup windows when visiting the web You have a lot of popup windows when visiting the web or just logging on to your system.or just logging on to your system.

Your homepage has changed to a different site.Your homepage has changed to a different site. You notice a major drop in system performance.You notice a major drop in system performance. Your antispyware or antivirus utility stops working.Your antispyware or antivirus utility stops working. You go to search for things and your search page has You go to search for things and your search page has

changed.changed. New Items appear in your favorites.New Items appear in your favorites. In many cases there are no signs and it is running In many cases there are no signs and it is running

silently recording your actions.silently recording your actions.

Protect Yourself from Protect Yourself from Spyware Spyware

Use a popup blocker like Google Toolbar, or the one Use a popup blocker like Google Toolbar, or the one that comes with FireFox and Internet Explorer.that comes with FireFox and Internet Explorer.

Install AntiSpyware utilities.Install AntiSpyware utilities. Some that we recommend are Ad-aware, Spybot - Some that we recommend are Ad-aware, Spybot -

Search and Destroy, CWShreder, and Symantec Search and Destroy, CWShreder, and Symantec Antivirus 10.Antivirus 10.

These can be found for free atThese can be found for free at http://www.lavasoftusa.com/http://www.lavasoftusa.com/ http://www.safer-networking.org/en/download/indhttp://www.safer-networking.org/en/download/ind

ex.htmlex.html http://www.majorgeeks.com/download4086.htmlhttp://www.majorgeeks.com/download4086.html

These programs are These programs are notnot provided to you by the provided to you by the University and are free for anyone to download for University and are free for anyone to download for personal use.personal use.

Spybot – Search and Spybot – Search and DestroyDestroy

Spybot - UpdatingSpybot - Updating Always Update the software before Always Update the software before

scanning or immunizing the system.scanning or immunizing the system.

Spybot - Immunize Spybot - Immunize Immunizing the system protects it from Immunizing the system protects it from

getting certain types of Spyware.getting certain types of Spyware.

Spybot - ScanningSpybot - Scanning Click the Search and Destroy Button to scan the system.Click the Search and Destroy Button to scan the system. This will clean off existing Spyware.This will clean off existing Spyware.

LavaSoft’s Ad-AwareLavaSoft’s Ad-Aware

Ad-Aware - UpdateAd-Aware - Update Use the Check for Updates Link on the Main Use the Check for Updates Link on the Main

screen or the Web update Button.screen or the Web update Button.

Ad-Aware - ScanningAd-Aware - Scanning Click the Scan Now ButtonClick the Scan Now Button Choose to do a Full System ScanChoose to do a Full System Scan

Ad-Aware – Scan ResultsAd-Aware – Scan Results You will get Critical Objects (Clean)You will get Critical Objects (Clean) You will get Negligible Objects (Can Leave Alone)You will get Negligible Objects (Can Leave Alone)

Mostly MRU (Most Recently Used)

Ad-Aware – Clean ObjectsAd-Aware – Clean Objects When you clean objects they go to the Quarantine. When you clean objects they go to the Quarantine. You can leave them or delete them.You can leave them or delete them.

CWShredderCWShredder Only Cleans spyware from Cool Web SearchOnly Cleans spyware from Cool Web Search

Attention !!!Attention !!!

Duplex Printing is now available on Duplex Printing is now available on our labs. our labs.

Additional InformationAdditional Information http://http://www.micros.umsl.eduwww.micros.umsl.edu

– The Microcomputer Program at the The Microcomputer Program at the University of Missouri-St. Louis offers day University of Missouri-St. Louis offers day and evening computer courses as part of and evening computer courses as part of the Chancellor's Certificate series. the Chancellor's Certificate series.

http://http://mell.umsystem.edumell.umsystem.edu– Microsoft E-Learning Library has tutorials Microsoft E-Learning Library has tutorials

on many MS Office products available to on many MS Office products available to all UMSL students and staffall UMSL students and staff

hhttp://ttp://www.umsl.edu/stgwww.umsl.edu/stg– The Online Student Technology Guide has

answers to many computing questions.