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
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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. 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