Presentation on theme: "Presented by: Melissa Dark CERIAS, Purdue University."— Presentation transcript:
Presented by: Melissa Dark CERIAS, Purdue University
Software Security: (Viruses, Trojans, Unwanted Access) Only install necessary and trusted software. Beware of *free* games, screen savers, and graphics. Run and UPDATE anti-virus software!! Keep a hard copy of the copyright release for all free products!
1988: Less than 10 known viruses 1990: New virus found every day 1993: 10-30 new viruses per week 1999: 45,000 viruses and variants Source: McAfee
This dialog box appears after the PIKACHUPOKEMON.EXE file has been activated. Worm: Accesses Outlook Address Book Embeds code to delete Windows and Windows Subfolders upon Restart. +: Does ask for permission to delete files with a “Y” command.
Trojan Horse: Trojan Horse: a malicious program that pretends to be a benign application; a Trojan horse program purposefully does something the user does not expect. Trojans are not viruses since they do not replicate, but Trojan horse programs can be just as destructive.
Viruses: Viruses: a computer program file capable of attaching to disks or other files and replicating itself repeatedly, typically without user knowledge or permission.....what if the Greek soldiers in the Trojan Horse had the plague??
Worms: Worms: reproducing programs that run independently and travel across network connections. The main difference between viruses and worms is the method in which they reproduce and spread. A virus is dependant upon a host file or boot sector, and the transfer of files between machines to spread, while a worm can run completely independently and spread of its own will through network connections.
Logic Bomb: Logic Bomb: A logic bomb is a type of Trojan Horse that executes when specific conditions occur. Triggers for logic bombs can include a change in a file, by a particular series of keystrokes, or at a specific time or date.
Trapdoor: Trapdoors: allows access to a system by skipping the usual login routine. Mattel Example...
Virus Information Activity Teach teachers to learn about viruses. Directions: Each of you has been given a keyword associated with a virus. Go to the McAfee virus information library (http://vil.mcafee.com/) and search for information dealing with your selection. Skim through the choices and pick the best one to share with the group! Explain what the virus is, what it will do, and steps to fix it.
Using Anti-Virus Software Many different kinds –Norton Antivirus –McAffee –Dr. Solomon Critical Component: UPDATES –Download definitions OFTEN –Continuous update packages
Firewalls 101: A firewall examines all traffic routed between the systems to see if it meets certain criteria. –If it meets this criteria...it is allowed to pass. Otherwise, it is blocked. Filters both inbound and outbound traffic. –Hardware or software based.
Zone Alarm: http://www.zonealarm.com Highly recommended FREE firewall. Allows for high level of user control. Easy to use and understand. First step in preventing unauthorized access.