Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer...

15
Malicious Attacks

  • date post

    21-Dec-2015

  • Category

    Documents

  • view

    219

  • download

    2

Transcript of Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer...

Page 1: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Malicious Attacks

Page 2: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Introduction

• Commonly referred to as: malicious software/ “malware”, computer viruses

• Designed to enter computers without the owner’s permission

Page 3: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Background

• Started out as “pranks,” more annoying than harmful, created by programmers to see range until around 1999

• 2001 viruses started to be used as forms as vandalism: destroying files, corrupting system

• 2003 Broadband Internet profit promotion via email spam, spyware advertising

Page 4: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

• Viruses first spread via floppy disks activated when program runs or disk boots

• 1990 Microsoft Windows platform rising of “macro viruses”—damage documents instead of applications

Page 5: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Recovery Methods

• System Restore – restores the registry and critical system files to a previous checkpoint

• Reinstall the operation system – 1. reformat the computer’s hard drive 2. install OS from its original media

• These methods are simpler and faster than most anti-virus software

• However, the computer’s user preferences must be restored every time; while backing up software, one may put another computer in danger

• Anti-virus software prevents, detects, and removes viruses from computers (sometimes downgrades a computer’s performance

Page 6: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Phishing

Page 7: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Phishing

• Phishing: attempting to get private information like usernames and passwords by pretending to be a trustworthy source.

Page 8: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

• Usually takes place through email and instant messaging– Links that prompt one to put info into what looks

like a legitimate site.

• First known case of Phishing was done in 1996

• Started with cases in AOL, then moved to financial institutions

Page 9: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

• Social Networking Sites are now the target of Phishing

• Most methods of phishing make a link appear to belong to a fake organization. – Misspelled URLs or the use of sub domains are

common tricks– Phishers have used images instead of text to make

it harder for anti-phishing filters to detect text commonly used in phishing e-mails

Page 10: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

WHAT IS A COMPUTER VIRUS?

“A COMPUTER PROGRAM ABLE TO INFECT OTHER PROGRAMS BY

MODIFYING THEM TO INCLUDE A POSSIBLY EVOLVED VERSION OF

ITSELF”

Page 11: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

TYPES OF VIRUSES

• BOOT PARTITION INFECTING VIRUS• EXECUTABLE FILE INFECTING VIRUS• MULTI-PART VIRUS• DIRECTORY INFECTING VIRUS

Page 12: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

WHAT CAN THEY DO?

• FORMAT DISK• COPY, RENAME, AND DELETE FILES• COPY THEMSELVES WITH NEW

CONFIGURATION INFORMATION• MODIFY FILE DATES AND EXTENTIONS• CALL OTHER COMPUTERS TO UPLOAD AND

DOWNLOAD FILES

Page 13: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

HOW DO THEY DO IT?

• APPENDING• INSERTION• INTERCEPTION• REDIRECTION• REPLACEMENT

Page 14: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Prevention

• Install software such as; firewalls, a spyware scanner, a Trojan horse program, and antivirus programs• Run up to date scans

• Don’t download materials from questionable sources

• Remove unused communication ports• Understand how an attack could happen

so you see one coming

Page 15: Malicious Attacks. Introduction Commonly referred to as: malicious software/ “malware”, computer viruses Designed to enter computers without the owner’s.

Conclusion

• There are six types of malicious attacks: trojan horses, worms, viruses, hoaxes, spam, and phishing

• Good computer practices can help a user minimize the threat of a malicious attack


Malware: Scanners, Sniffers, Viruses, Worms, Mobile Code

Malware: Scanners, Sniffers, Viruses, Worms, Mobile Code

Introduction to Malicious Code (Malware) - Chalmers · Introduction to Malicious Code (Malware) ... • But what type of content is safe? Targeted attacks ... • Salami attack

Introduction to Malicious Code (Malware) - Chalmers · Introduction to Malicious Code (Malware) ... • But what type of content is safe? Targeted attacks ... • Salami attack

Introduction to Malicious Code (Malware) - Chalmers Maliciou… · Introduction to Malicious Code (Malware) ... • But what type of content is safe? ... Salami attack Usesseemingly

Introduction to Malicious Code (Malware) - Chalmers Maliciou… · Introduction to Malicious Code (Malware) ... • But what type of content is safe? ... Salami attack Usesseemingly

What is Malware? What Kinds of Malware Are There? Malware: Fighting Malicious Code, ... – Computer Security: Art and Science, ... Malicious logic is a set of instructions that cause

What is Malware? What Kinds of Malware Are There? Malware: Fighting Malicious Code, ... – Computer Security: Art and Science, ... Malicious logic is a set of instructions that cause

Viruses, Spyware , Malware and Phishing

Viruses, Spyware , Malware and Phishing

Viruses. Malware versus Virus Viruses belong to a larger category of software known as Malware, which is short for “malicious software” Computer viruses.

Viruses. Malware versus Virus Viruses belong to a larger category of software known as Malware, which is short for “malicious software” Computer viruses.

Viruses & Malware

Viruses & Malware

Electronic Information Security · 2016. 12. 14. · Viruses & Malware • A computer virus is a type of malicious software program that, when executed, replicates by reproducing

Electronic Information Security · 2016. 12. 14. · Viruses & Malware • A computer virus is a type of malicious software program that, when executed, replicates by reproducing

Malware Detection using Computational Biology Toolsijetch.org/papers/566-ST0031.pdfMalware is a generic term used to describe all kinds of malicious software. Viruses, Worms, Spyware,

Malware Detection using Computational Biology Toolsijetch.org/papers/566-ST0031.pdfMalware is a generic term used to describe all kinds of malicious software. Viruses, Worms, Spyware,

Malware Analysis Analysis.pdf · Definisi Malware Analysis • What is a malware? • Malware (malicious software) ... Malware Sinkronisasi Token • Pelaku: Zeus Banking Trojan •

Malware Analysis Analysis.pdf · Definisi Malware Analysis • What is a malware? • Malware (malicious software) ... Malware Sinkronisasi Token • Pelaku: Zeus Banking Trojan •

SplitScreen: Enabling Efficient, Distributed Malware Detection · The amount of malicious software (malware)—viruses, worms, Trojan horses, and the like—is exploding. As the amount

SplitScreen: Enabling Efficient, Distributed Malware Detection · The amount of malicious software (malware)—viruses, worms, Trojan horses, and the like—is exploding. As the amount

SplitScreen: Enabling Efficient, Distributed Malware Detectiondga/papers/splitscreen-nsdi2010.pdfThe amount of malicious software (malware)—viruses, worms, Trojan horses, and the

SplitScreen: Enabling Efficient, Distributed Malware Detectiondga/papers/splitscreen-nsdi2010.pdfThe amount of malicious software (malware)—viruses, worms, Trojan horses, and the

Malicious Code Virus, malware, worms - Högskolan Dalarnausers.du.se/~hjo/cs/dt1058/presentation/pdf/EHP_14_malicious_code... · Malicious Code Virus, malware, worms ... • Common

Malicious Code Virus, malware, worms - Högskolan Dalarnausers.du.se/~hjo/cs/dt1058/presentation/pdf/EHP_14_malicious_code... · Malicious Code Virus, malware, worms ... • Common

Malware, Spyware, and Viruses

Malware, Spyware, and Viruses

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

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

How Malware and Viruses effect Our Systems

How Malware and Viruses effect Our Systems

Malicious software(Malware)

Malicious software(Malware)

4-1 Last time Malicious code: Malware Viruses Trojan horses Logic bombs Worms Other malicious code: web bugs.

4-1 Last time Malicious code: Malware Viruses Trojan horses Logic bombs Worms Other malicious code: web bugs.

Malware 101 Viruses 32848

Malware 101 Viruses 32848

VIRUSES and MALWARE

VIRUSES and MALWARE