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Virus and hacker

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Huyen Le
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Virus & Hacker Lan Anh Linh (Pi) Thanh Huyen
OUTLINE Virus Hacker Prevention
Virus Definition Classification Working Symptoms
Definition • A computer virus is a program that can copy itself and infect a computer • A computer virus has 2 major characteristics:  the ability to replicate itself  the ability to attack to anther file
Workingofviruses Infector copies the viruses Detonator performs the virus’s main work Computer is infected with viruses
Classification Environment Network virus File virus Boot virus File-boot virus
Classification Method of infecting •Resident •Non- resident
Classification Working algorithm Parasitic Mutants Replicators Trojan horse Invisible
Symptoms  Slow response and slow program execution  Random hard drive crash and restart  Distorted graphic and text  File have mysteriously vanished  Extensive pop-up ads  Inability to open file with existing password
HACKER Definition Purposes Hacking process Classification Negative effects
Definition • A hacker originally means someone who like to do new things with computers. • In the computer security context, a hacker is a person who uses a computer to look at and/or change information on another computer without permission.
Classification Level of knowledge Code Programmer Admins Script kiddie Cap or characteristic White Hat- Ethical Hackers Black Hat- Malicious Hacker Grey Hat, Blue Hat…
Purpos es Credit Card Information (for money) Identity TheftBusiness Information
Hacking process Foot Printing Scanning Enumeration Gaining Access Privilege Escalation Pilfering Creating Backdoors Covering Tracks Stage 1 Stage 2 Stage 3
Negative effects Financial losses Loss of information
Prevention Viruses Hacker
Prevention virus
Do not open unknown attachments in emails How to prevent viruses
Download files only from trusted sites How to prevent viruses
How to prevent viruses Use Anti-virus Protection Software and update regularly
How to prevent viruses • replace files with your backup copy • store your backup copy in a separate location from your work files Create backup files
Prevention hacker
Install a firewall  Firewalls refer to either software or hardware: block network traffic coming to and leaving a system give permission to transmit and receive only to user-authorized software How to prevent hacker
Install Anti-spyware programs How to prevent hacker Advertising Collecting personal information Changing the configuration of computer
Use strong passwords Don’t use: real words or combinations thereof numbers of significance similar password for all your accounts How to prevent hacker
Virus Hacker Prevention Conclusion
Virus and hacker
Virus and hacker

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