Virus & Hacker Lan Anh Linh (Pi) Thanh Huyen
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Virus&
Hacker
Lan Anh
Linh (Pi)
Thanh Huyen
OUTLINE
Virus Hacker Prevention
Virus
Definition ClassificationWorking 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
Working of virusesInfector 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 ClassificationNegative 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…
Purposes
Credit Card Information(for money)
Identity TheftBusiness Information
Hacking processFoot 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
mAndy Ám Ảnh
Lạnh
Lùng
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
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