Computer Networks I Antivirus explained By: Daniel Josefsson Daniel Josefsson Kristoffer Wallin Kristoffer Wallin om>om>

Slides:

Advertisements

Similar presentations

Viruses. Viruses, Trojans, Worms Virus - a program that attaches itself to a host, and copies itself onto new files/disks Macro viruses - small program.

Advertisements

What are computer viruses and its types? Computer Viruses are malicious software programs that damage computer program entering into the computer without.

By Hiranmayi Pai Neeraj Jain

 Application software consists of programs designed to make users more productive and/or assist with personal tasks.  Growth of internet simplified.

Day anti-virus anti-virus 1 detecting a malicious file malware, detection, hiding, removing.

1 Anti Virus vs virus System i-Specific Anti-Virus Product Ali ameen al said.

Malicious Attacks Angela Ku Adeline Li Jiyoung You Selena Yuen.

Lesson 14-Desktop Protection. Overview Protect against malicious code. Use the Internet. Protect against physical tampering.

1 Pertemuan 05 Malicious Software Matakuliah: H0242 / Keamanan Jaringan Tahun: 2006 Versi: 1.

Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

What Are Malicious Attacks? Malicious Attacks are any intentional attempts that can compromise the state of your computer. Including but not limited to:

Computer Viruses. History Malicious software – 1970’s Programs distributed over exchange servers speeds spread of viruses Brain sparks term: Virus.

1 Malicious Logic CSSE 490 Computer Security Mark Ardis, Rose-Hulman Institute March 25, 2004.

Computer Viruses By Patsy Speer What is a Virus? Malicious programs that cause damage to your computer, files and information They slow down the internet.

What is it, how does it work, and why is it important?

Antivirus Software Detects malware (not just viruses) May eliminate malware as well Often sold with firewalls Two approaches: Dictionary-based - Compares.

R. FRANK NIMS MIDDLE SCHOOL A BRIEF INTRODUCTION TO VIRUSES.

Henric Johnson1 Chapter 10 Malicious Software Henric Johnson Blekinge Institute of Technology, Sweden

Video Following is a video of what can happen if you don’t update your security settings! security.

1 Chap 10 Malicious Software. 2 Viruses and ”Malicious Programs ” Computer “Viruses” and related programs have the ability to replicate themselves on.

Malicious Code Brian E. Brzezicki. Malicious Code (from Chapter 13 and 11)

Computer Viruses Preetha Annamalai Niranjan Potnis.

UNIT 4 ASSIGNMENT VIRUSES & DESTRUCTIVE PROGRAMS.

Understanding and Troubleshooting Your PC. Chapter 12: Maintenance and Troubleshooting Fundamentals2 Chapter Objectives  In this chapter, you will learn:

Spyware and Viruses Group 6 Magen Price, Candice Fitzgerald, & Brittnee Breze.

Viruses & Destructive Programs

WHAT IS VIRUS? NAE GRAND CHALLENGE SECURE CYBERSPACE.

D. Beecroft Fremont High School VIRUSES.

C HAPTER 5 General Computer Topics. 5.1 Computer Crimes Computer crime refers to any crime that involves a computer and a network. Net crime refers to.

Virus and Antivirus Team members: - Muzaffar Malik - Kiran Karki.

1.2 Security. Computer security is a branch of technology known as information security, it is applied to computers and networks. It is used to protect.

A virus is software that spreads from program to program, or from disk to disk, and uses each infected program or disk to make copies of itself. Basically.

CHAPTER 14 Viruses, Trojan Horses and Worms. INTRODUCTION Viruses, Trojan Horses and worm are malicious programs that can cause damage to information.

Trojan Horse ITGD 2202 Assistant Professor Dr. Sana’a Wafa Al-Sayegh Dr. Sana’a Wafa Al-Sayegh supervision Mohammed F. Abu Lamdy.

1 Higher Computing Topic 8: Supporting Software Updated

1 Chap 10 Virus. 2 Viruses and ”Malicious Programs ” Computer “Viruses” and related programs have the ability to replicate themselves on an ever increasing.

Computer viruses are small software programs that are made to spread from one computer to another and to interfere with computer operations. There are.

1 Figure 4-16: Malicious Software (Malware) Malware: Malicious software Essentially an automated attack robot capable of doing much damage Usually target-of-opportunity.

Chapter 5: General Computer Topics Department of Computer Science Foundation Year Program Umm Alqura University, Makkah Computer Skills /1436.

Chapter 10 Malicious software. Viruses and ” Malicious Programs Computer “ Viruses ” and related programs have the ability to replicate themselves on.

Logic Bomb Virus.  The first use of a time bomb in software may have been with the scribe markup language and word processing system, developed by Brian.

Return to the PC Security web page Lesson 5: Dealing with Malware.

Made by : Mohamed kullab DR. Sanaa el sayegh.  Most personal computers are now connected to the Internet and to local area networks, facilitating the.

Trojan Horses What you need to know about one of the world’s most dangerous forms of malicious code.

Recent Internet Viruses & Worms By Doppalapudi Raghu.

Virus and anti virus. Intro too anti virus Microsoft Anti-Virus (MSAV) was an antivirus program introduced by Microsoft for its MS-DOS operating system.

Dealing with Malware By: Brandon Payne Image source: TechTips.com.

Anti-Virus Software By Johnathan Trakalo and Mitchell Pleet.

Malicious Logic and Defenses. Malicious Logic Trojan Horse – A Trojan horse is a program with an overt (documented or known) effect and covert (undocumented.

Viruses can get onto your computer via:  Junk mail  Downloads  Pop-ups.

Chapter 19 – Malicious Software What is the concept of defense: The parrying of a blow. What is its characteristic feature: Awaiting the blow. —On War,

Computer Systems Viruses. Virus A virus is a program which can destroy or cause damage to data stored on a computer. It’s a program that must be run in.

Computer virus Speaker : 蔡尚倫.  Introduction  Infection target  Infection techniques Outline.

NETWORK SECURITY Definitions and Preventions Toby Wilson.

1 AQA ICT AS Level © Nelson Thornes Firewalls and Virus Checkers.

Candidates should be able to:  describe the purpose and use of common utility programs for:  computer security (antivirus, spyware protection and firewalls)

1 3 Computing System Fundamentals 3.7 Utility Software.

MALICIOUS SOFTWARE Rishu sihotra TE Computer

Page 1 Viruses. Page 2 What Is a Virus A virus is basically a computer program that has been written to perform a specific set of tasks. Unfortunately,

MUHAMMAD GHAZI AIMAN BIN MOHD AIDI. DEFINITION  A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly.

Chapter SOFTWARE Are the programs which are written by different programming languages. These programs are: a series of instruction that tells.

By Thomas Pantone Cosc 380.  A virus is a type of malware that self replicates after being executed and inserts itself into other programs, data files,

Antivirus Software Technology By Mitchell Zell. Intro  Computers are vulnerable to attack  Most common type of attack is Malware  Short for malicious.

Protecting Computers From Viruses and Similarly Programmed Threats Ryan Gray COSC 316.

Cosc 4765 Antivirus Approaches. In a Perfect world The best solution to viruses and worms to prevent infected the system –Generally considered impossible.

VIRUSES & ANTI- VIRU-SES. WHAT IS A COMPUTER VIRUS? A computer virus is a small software program that spreads from one computer to another computer and.

Chapter Objectives In this chapter, you will learn:

Chap 10 Malicious Software.

Chap 10 Malicious Software.

Malicious Program and Protection

Presentation transcript:

Computer Networks I Antivirus explained By: Daniel Josefsson Daniel Josefsson Kristoffer Wallin Kristoffer Wallin om>om>

Content History Malicious logic TrojansWormsViruses

Content, continued AntivirusScanningDictionaryHeuristicsSandboxingRemovalToday

History “I’M THE CREEPER : CATCH ME IF YOU CAN” Berndt Fix Beginning of 90’s Peter Tippett Virus distribution

Trojans Definition: A program with an overt (documented or known) effect and a covert (undocumented or unexpected) effect Payloads Remote Accessing Data Destruction Downloader Server Trojan(Proxy, FTP, IRC, , HTTP/HTTPS, etc.) Security software disabler Denial-of-service attack (DoS)

Worms Definition: A program that copies itself from one computer to another NetworkPayload

Viruses Definition: A program that inserts itself into one or more files and then performs some (possibly null) action InfectionVirus-Worms

Dictionary Requires frequently updated dictionary EncryptionPolymorphic

Heuristics Behavior Emulate files False positives

Sandboxing Emulate OS Performance issues

Removal Attempt to remove the malicious code Quarantine the file Delete the malicious file Might fail

Today Best detection rates by June 2008 (1) G DATA 2008 version % F-Secure 2008 version % TrustPort version % Detection of new viruses Whitelisting (1)