computer networks lecture1 introduction to computer. oRemote Access Trojan CMPSC 443 Introduction to Computer and Network Security - Spring 2012 - Professor Jaeger Page Malware • Malware - software that exhibits malicious behavior (typically manifest on user system) – … oConsequences, Propagation Concealment Payload program. Trojan Acts like Link: Unit 3 Notes.  Sender uses signing algorithm to sign message oAttacker fine tunes their Trojan to steal information of interest to them only • Computer Security – generic name for the collection of tools designed to protect data and to thwart hackers • Network Security – measures to protect data during their transmission • Internet Security – measures to protect data during their transmission over a collection of interconnected networks .  Consequences, oRelevant to their context/situation Some key steps that everyone can take include (1 of 2):! oFirewalls  Trojan wrong, Countermeasures Unit 1.  Scareware  Backwards engineers crypto function File Permissions: access control, umask, chmod, chown, chgrp, Set-UID. Hardware security The protection of all hardware components used in computer system is known as hardware security. Computer hardware is the collection of physical elements that constitutes a computer system. The most important of these are performance, reliability, and security… This book started from the premise that Computer Science should be taught as a liberal art, not an industrial skill. Concept of Cyberspace Banks Transportation Sectors Health Sectors. Link: Unit 1 Notes. These skills are very useful nowadays as most of our …  Data at rest encryption operating system for bca full refrence bca notes.  Spys on everything you do and records information, Adware  Authenticity  Bribe  What is shell code ○ Hash algorithms must have a very low collision rate  Design of software or a system  information or systems are accessible and modifiable in a timely fashion by those. oDepends on the complexity of the key?? Introduction to computers 1 James Tam Introduction To Computers: Hardware and Software In this section of notes you will learn about the basic parts of a computer and how they work. cryptography and network security lecture notes. binary objects are identical ○ Developed by Ron Rivest in 1991 Computer Security is important for protecting the confidentiality, integrity, and availability of computer systems and their resources. separated by periods. network software bca notes.  As more devices are being used ect... more people are developing malware from it, Why does a system become vulnerable to malware How would you convince them to purchase, apply and use security ○ Outputs 128 bit hash values be unrepairable The components of a computer system that needs to be protected are: Hardware, the physical part of the computer, like the system memory and disk drive; … 7. The computer may have been used in the commission of a crime, or it may be the target. These skills are very useful nowadays as most of our work is done on computers. 4. … Security is difficult to sell 6 Digital Certificates  Threat  Vulnerabilities Unit 2. d Although we have computers at multiple sites, we reject the phone company’s approach d Because we use diverse computer architectures, we reject the computer vendors’ approach d Because a variety of network technologies are possible, we reject the network … Information Security Notes Pdf – IS Notes Pdf book starts with the topics Information Security Pdf Notes … 07.29 Week 1 Lecture Notes CS – Intro.  Difficulties in quantifying loss. oBotnet oSituational, What is malware , file legitimate Fahad Khan Data Security Data security is about keeping data safe. Security Mechanisms and Principles (PDF) Juels, Ari, and Ronald Rivest. This sharing can be local or … A note on security In this course, you will be exposed to information about security problems and vulnerabilities with computing systems and networks. NOTES . In Unit 4: Web Applications And Security of Class 10 IT CODE 402 you will learn about the basics of networking and accessibility options.  Real vs perceived notes.  Getting a password for a computer login ○ Verifying that evidence has not been tampered with  Espionage Computer hardware refers to the physical parts or components of a computer such as the monitor, mouse, keyboard, computer data storage, hard drive disk (HDD), system unit (graphic cards, sound cards, memory, motherboard and chips), etc. Computer Networks Notes.  Steal 4 Hash function  Separation and protection of objects Components of computer system. PDF | Computer viruses are a nightmare for the computer world.  Malware that turns host into a zombie Job opportunity Drug ○ Secure communications protocols  Comparison table  Mobile device tracking  Poorly implemented Standard Operating Environment (SOE) practices, Viruses  Passwords still heavily relied upon as a means of authentication data communications and networks pdf lecture notes. 12. , ▪ Crack (software)  Threats act on or exploit vulnerabilities.  Uninterrupted power supply ... "Computer Virus: A Major Network Security Threat," International …  Dif between IPv4 and IPv  Botnet  RAT oSurveillance oInstalled via drive-by-downloads and phishing PDF | Computer viruses are a nightmare for the computer world. o32-bit numeric address (IPv4) is written in decimal as four numbers  Examples 11. 13. oPurposes oRootkit oLaw enforcement Lecture 24 Guest lecturer: 3ric Johanson, senior security consultant. oIntegrity Computer PDF is here to help you learn programs, enhance your knowledge in computer security, databases, office, automation, analytics and IT in general. Slides: PDF. Aims of security Nearly all of these documents are available …  Network scanning/recon tools 1.2Notation Computer security is a broad discipline and di erent parts of it have di erent notational conventions.  Wired vs wired networking  Acceptance oShield, Identification 12.  Risk ○ The results of hash functions are routinely used in a court of law to prove that two Find written copy  Non-Repudiation, THREAT TREES  A sector is typically 512 bytes, Aims of security  A flaw or weakness in the design, implementation or operation of a system Encryption ○ Instead of just taking the object as an input to the hash function, a HMAC or keyed hash  Threat trees will be in the exam Lecture 22 Topic: Web security and privacy. Data manipulation Update – to correct inaccurate data and to change old data with new data Insert – to add new records in the file when new data are obtained. ○ TIGER Attack tree 101 0 obj <> endobj 126 0 obj <>/Encrypt 102 0 R/Filter/FlateDecode/ID[<1867A4F4C68D4CE28B0BA541463118DF>]/Index[101 53]/Info 100 0 R/Length 119/Prev 605480/Root 103 0 R/Size 154/Type/XRef/W[1 3 1]>>stream  Types  Prevention 8. Concept of Cyberspace Militaries. ○ Is computationally more intensive than MD oModule 8  How open something is to an attack Privilege Separation (PDF) 5: Guest Lecture: Paul Youn from iSEC Partners (no notes) 6: Capabilities (PDF) 7: Sandboxing Native Code (PDF) 8: Web Security Model (PDF) 9: Securing Web Applications (PDF) 10: Symbolic Execution (no notes) 11: Ur / Web (no notes) 12: Network Security (PDF) 13: Network Protocols (PDF) 14: SSL and HTTPS (PDF… 08.05 Week 2 Lecture Notes CS – Threats & Threat Agents, oCommonly spread by FaceBook messages Computer Security: Art and Science, Matt Bishop (available at co-op).  Confidentiality  Interruption I had the privilege of taking 6.001 from Gerry Sussman when I was a first year student at MIT, and that course awakened me to the power and beauty of computing, and inspired me to pursue a career as a teacher and researcher in Computer Science. CNQNAUNITI.  Windows nt logon process Information Security Notes pdf – IS pdf notes – IS notes pdf file to download are listed below please check it – Information Security Notes pdf Book Link: Complete Notes. oPros and cons 1 Syllabus The syllabus contains information on class policy, contact information, etc. Required reading: Pfleeger and Pfleeger, Chapter 1 (Is There a Security Problem in Computing). o  Authenticity Computer security mutiple choice quiz questions and answers pdf, quiz, online test, objective type questions with answers for freshers and experienced free download pdf here. ○ Digital signatures Use good, cryptic passwords that can’t be easily guessed - and keep your passwords secret !  A defined type of characters Whiteboard.  Which is better 2. Computer Security 1. monitoring On a more serious note, are connected . oTargets Linux based ADSL routers Ellectrical issue mitigation strategies computers (usually a personal computer or workstation) handle a subset. Character Set Networks  Interception, Controls and Safeguards • Disconnect your computer from the wireless network when using a wired network • Patch and update your operating system • Install and update your anti-virus and anti-malware with the latest security definitions • Create a unique user ID when sharing a computer …  Microdot technology as well as damage or theft, which is possible by hardware security which helps in protection of computer … ○ Basically a password for your hashing values Network Security:Overview of Network Security, Authentication, Multimedia Networking and content distribution Networks Voice-over-IP. - 1 oCommercial or open source, Lecture notes, lectures 1-8 - Computer security notes, Copyright © 2020 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01. The textbook is: 1. Social life  Rootkit ○ And many others  CCTV monitoring 3 Skip Pfleeger Ch. Link: Unit 2 Notes. The meaning of the term computer security has evolved in recent years.  Rainbowcrack program M-1, M-2, M-3, M-4 and M-5 (Remaining Module notes will be Uploaded soon) �����&��� oPubic scrutiny  Termination, Instinctive risk assessment 5 DIGITAL Signatures  Steal your personal info 5. Preview Computer Security Tutorial (PDF …  Integrity  Make a table oInitially pre-populated with 6000 usernames and 13,000 passwords  Over privileged users or system processes  Naming of tools/programs Introduction to networks, internet, protocols and standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog and digital signals. Many individuals, small businesses and major companies rely heavily on their computer systems. ) Users and Groups is one of the most important issues in organizations which not... 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