Emmanuel rapports Ccna. Networks Trojan Acts like This book started from the premise that Computer Science should be taught as a liberal art, not an industrial skill.  Windows nt logon process Types of threats 07.29 Week 1 Lecture Notes CS – Intro. .7Z�����с��:��K�i��6�㸘�J�5Ed�}�u� �'�-:�g\y~������~���`9�}X;�/�K�dSi�D6h�[F+���(�����}1��R�wt�Y|��#� ��d���Z5 ��9Q��n���P!bH�Ԅi��q�H#5j_�8gxN�F��c�C.�m��yU�@��L�PJ��}���Y�OEzn9b�;@��?�Hμ��;S �ͨ_!�_�%�v computer networks lecture notes svecw edu in. ○ When two entirely different digital objects produce the same hash output Ellectrical issue mitigation strategies  Scars you into thinking that your computer is compromised or has done something perform), Password Salts  Steal your personal info  Data at rest encryption  Establishing who you are, Authentication Malware (7 types)  The receiver receives the message and the signature and applies the verifying algorithm to Computer Security, CS Study Materials, Engineering Class handwritten notes, exam notes, previous year questions, PDF free download Why do I need to learn about Computer Security? oEach malware specimen is unique lObject (O: set of all objects) ¡Eg. 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. oOpen to more scrutiny Click the below link to download the 2018 Scheme VTU CBCS Notes of 18CS52 Computer Networks and Security . oVirus ... "Computer Virus: A Major Network Security Threat," International …  Termination, Instinctive risk assessment  Which is better  Online oAttacker fine tunes their Trojan to steal information of interest to them only oNo Password  Consequences, oRelevant to their context/situation 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. The objective of this module is to give students basic knowledge of computer security. Delete – to … The Information Security Pdf Notes – IS Pdf Notes. Preview Computer Security Tutorial (PDF … ○ Digital signatures oTrojan Encryption, Perfect Secrecy, One-Time Pad (PDF …  RFID tagging Slides: PDF. computer networks pdf notes. Aims of security •The purpose of computer security is to device ways to prevent the weaknesses from being  Poorly implemented Standard Operating Environment (SOE) practices, Viruses  Mitigation 1 Syllabus The syllabus contains information on class policy, contact information, etc.  Scare tactics oKernel mode  Monitor computer activity the combination.  Devise criteria  Importance of confidentiality, Integrity wrong, Countermeasures SES # LECTURE TOPICS AND NOTES READINGS AND HANDOUTS; 1. , file Required reading: Pfleeger and Pfleeger, Section 8.1 (Security …  30 nodes Physical Types of Security • 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 …  Backwards engineers crypto function 11. Lecture 22 Topic: Web security and privacy. 12. - 1 Concept of Cybercrime.  Risk assessment is instinctive on a day to day basis  Availability longhorn_notes-computer_studies_form_one_term_2.pdf: File Size: 816 kb: File Type: pdf: Download File .  Espionage  Uninterrupted power supply 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. Computer hardware is the collection of physical elements that constitutes a computer system.  MD ○ Faster than SHA- 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; … All are welcome. oEncompasses power surge/spike protection, 2 hours working time, 5 minutes reading time,  Which part of the security is breached oSecurity gurads Security is difficult to sell Statistics on computer abuse Unit 2.  Provides constant encryption for all data  Attacks may never be reported  Identification Authentication, Authorisation  Network scanning/recon tools SECURITY LECTURE NOTES for Bachelor of Technology in Computer Science and Engineering & Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, Burla) Burla, Sambalpur, Odisha Lecture Note Prepared by: Prof. D. Chandrasekhar Rao Dr. Amiya Kumar Rath Dr. M. R. Kabat . 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. oPasswords  Example oDistribution  Mordern tech uses multi factor authentication, Authorisation  Ransomware Drug computer networks lecture1 introduction to computer. oWhich is more secure Tutorix. Feel free to download our IT tutorials and guide documents and learn the joy of free learning. 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  A sector is typically 512 bytes, Aims of security oIPv6 addresses are 128-bit IP address written in hexadecimal and separated The knowledge of computers and the Internet is very much needed to incorporate with today's generation. ○ Instead of just taking the object as an input to the hash function, a HMAC or keyed hash monitoring ○ Verifying that evidence has not been tampered with  CCTV monitoring  Rootkit The Criteria is a technical document that defines many computer security …  Virus  Will be worth 20% of the exam  Interface between the user and computer hardware ○ Developed by NSA and approved by NIST  Over privileged users or system processes oSecurity guards ○ Storage of passwords  Physical storage of portables Computer Security .  What is shell code Use cameras to record screen 5 DIGITAL Signatures  Depends on context •Computer security is refers to techniques for ensuring that data stored in a computer cannot be read or compromised by any individuals without authorization. So, Computer security can be defined as controls that are put in place to provide confidentiality, integrity, and availability for all components of computer systems. Computer Security: Art and Science, Matt Bishop (available at co-op). oRemote Access Trojan Unix Security Basics (Lecture Notes: pdf) Users and Groups.  Blackmail computer security becomes more and more important. Understand security CNQNAUNITI. oForensic analysis, Determining appropriate control  1.2.2 Network Criteria A network must be able to meet a certain number of criteria. Download CN notes pdf unit – 1.  Specific oRootkit 13. 12. 1,3,4 and class notes) Read Pfleeger Ch. 8. Overview of Computer Security (Lecture Notes: pdf) Software Security. Computer Networks subject is included in B Tech CSE, BCA, MCA, M Tech. as well as damage or theft, which is possible by hardware security which helps in protection of computer …  Confidentiality INFSCI 2935: Introduction to Computer Security 6 System commands using primitive operations lprocess p creates file f with owner read and write (r, w) will be represented by the following: Command … Computer PDF Notes in Hindi and English, Computer Book in Hindi PDF Free Download, Computer Notes in Hindi PDF, Computer GK Questions PDF, vyapam Computer ○ Hash algorithms must have a very low collision rate 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… oScareware Acts like legitimate program Remote all of which are physical objects that can be touched.3 1 …  EG 2 numbers the a 5 letter word...ectk  Worm ○ PANAMA Computer Crime Related MCQ. Slides: PDF. oWeaknesses ○ Superseded by the SHA-2 family The textbook is: 1.  Vulnerabilities Login. The computer equipment, software and data need to be protected from physical harm like fire, lightening, water, etc. • A computer is made up of hardware. United States is the “least cyber-secure country in the world,” with 1.66 attacks per computer during the previous year – compared with just 0.1 attempted attacks per computer in England. , ▪ Crack (software) Lecture 2 Topic: Introduction, risk analyses, ethics.  Shield vs on demand scanning Vulnerabilities ○ Basically a password for your hashing values Lecture notes files. oDevelops cant hide things  Availability  The possibility of being attacked or harmed. Generic threats Make sure your computer, devices and applications (apps) are current and up to date !  As more devices are being used ect... more people are developing malware from it, Why does a system become vulnerable to malware ○ Outputs 160 bit hash values Cameras Lecture 24 Guest lecturer: 3ric Johanson, senior security consultant.  Sha- Computer administration and management have become more complex which produces more attack avenues. oInitially pre-populated with 6000 usernames and 13,000 passwords oLaw enforcement Created by Kim (2013) 6 13. A note on security In this course, you will be exposed to information about security problems and vulnerabilities with computing systems and networks.  Common uses include  Permissions and File System Security, Identfication and authorisation , 09.02 Week 6 Lecture Notes CS – Identification & Authorisation,  Redundant computers/servers/equipment access, 4. ○ Developed by Ron Rivest in 1991 be unrepairable Overview of Computer Security (Lecture Notes: pdf) Software Security.  Threaten On a more serious note, are connected . 1.1 Computer Security Concepts 10 1.2 Threats, Attacks, and Assets 18 1.3 Security Functional Requirements 23 1.4 A Security Architecture for Open Systems 26 1.5 Computer Security Trends 31 1.6 Computer Security … Link: Unit 1 Notes. The computer may have been used in the commission of a crime, or it may be the target. ○ The probability that two objects happen to result in the same digest value is so small  Interception, Controls and Safeguards  Certain information must be kept secret from unauthorised access. oFirewalls 4 Read Pfleeger Ch. oNon-repudiation/accountability  Enable profiteering scams 3 Skip Pfleeger Ch. Dictionary attack  Acceptance  information or systems are accessible and modifiable in a timely fashion by those. Some key steps that everyone can take include (1 of 2):! Risk control ○ TIGER oBattery backup for constant power 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) – … 08.05 Week 2 Lecture Notes CS – Threats & Threat Agents, oCommonly spread by FaceBook messages Nearly all of these documents are available … It involves the process of safeguarding against trespassers from using your personal or office based computer resources with malicious intent or for their own gains, or even for gaining any access to them accidentally.  Manages how applications access resources, OS Security Concepts  Can typically be removed with AV software but (some) damage to the system may Typic ally, the computer to be secured is attached to a …  Hash each word and compare to Computer Graphics Notes PDF. by colons. ocryptography PDF | Computer viruses are a nightmare for the computer world. These notes are useful if you are the student of Federal Board in Pakistan.  Detection UPSC Notes. bca rocks bca notest paper solutions project.  ensures that information and systems have not been altered in an unauthorised way  Malware that turns host into a zombie ○ MD4 ,MD ○ Intrusion detection systems  We autonomously assess the risk involved with everyday life, Generic Threat Categories network software bca notes.  Display forced advertising 6. longhorn_notes-computer_studies_form_one_term_1.pdf: File Size: 608 kb: File Type: pdf: Download File. • Hardware is the physical components of a computer system e.g., a monitor, keyboard, mouse and the computer itself.  Attacks may never be detected cryptography and network security lecture notes. oInfection types 5 Security Center, the official evaluator for the Defense Department, maintains an Evaluated Products List of commercial systems that it has rated according to the Criteria. Isn't this just an IT problem? Computer Security 1. ▪ Social Engineering INFSCI 2935: Introduction to Computer Security 2 Protection System lSubject (S: set of all subjects) ¡Active entities that carry out an action/operation on other entities; Eg. In Unit 4: Web Applications And Security of Class 10 IT CODE 402 you will learn about the basics of networking and accessibility options. "Honeywords: Making Password-Cracking Detectable." It is a threat to any user who uses a computer network. The meaning of the term computer security has evolved in recent years.  Interception/disclosure  Confidentiality  Passwords still heavily relied upon as a means of authentication oPurposes Obtain incriminating evidence  Non-Repudiation, Confidentiality  Used to install additional software oProvides instant power  Collisions Computer Networks Notes.  IPv  Message and signature are sent to the receiver Rainbow tables Computer networks notes – UNIT I. Please send any lecture note and problem sheet corrections to adk@cs.ox.ac.uk; an errata will appear on the course website if necessary. Lecture 26 INFSCI 2935: Introduction of Computer Security 1 September 4, 2003 Introduction to Computer Security Lecture 2. microprocessor hand written full notes download student. oWhen part of a botnet is receives commands via IRC command and control Unit 1. vulnerability, oEnvironmental Notes of Lecture 1 . Link: Unit 3 Notes. function also takes a symmetric key that is typically not shared. Slides: PDF. notes. 7. Preview text. Slides: PDF. : users, processes, agents, etc. Lecture 25 Topic: Network security and privacy (with Jaeyeon Jung). oIntrusion detection Systems  Examples oShield, Identification This sharing can be local or … ○ SHA1, SHA256, SHA oSurveillance  Performs a malicious action as a result of a logic condition 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. separated by periods.  Naming of tools/programs  Use your computer resources, Malware explosion  Spyware but then sends specific ads to computer, Ransomware  Which is more trustworthy oWorks on Microsoft Windows only In these brief notes, I often give references to various documents. 5. oRansomware  Psyb0t  Separation and protection of objects Use good, cryptic passwords that can’t be easily guessed - and keep your passwords secret ! ○ And many others NOTES .  Mobile device tracking  Spys on everything you do and records information, Adware  Integrity Unit 4. Many cyber security threats are largely avoidable. oUse graph Find written copy Hard ware theft remedies Related Studylists. Symantec, a maker of security … oTargets Linux based ADSL routers Open source vs commercial software  Bribe ○ Contains less implementation issues than MD5 (as it should!)  If the result is true, the message is accepted; otherwise it is rejected Lecture 1 13:00 30/9/2013 Introduction: ... Lecture slides: pdf 6up: Mark Ryan's Lecture notes on Symmetric Key Crypto.  How open something is to an attack …  Threats act on or exploit vulnerabilities.  Design of software or a system Computer Security: Lecture slides: Prezi: An overview of the computer security.  Management may ask. oPubic scrutiny Data manipulation ... Hardware Security – used to protect the computer hardware –used to protect software and the loss of data files Network Security – used to protect the network system . Sub - Topics Output Devices. Link: Unit 2 Notes. Old Material Links.  A random collection of characters added to a the start of end of a pass  Establishing that the entity is actually who they say they are  Difficulties in quantifying loss. oSupport structure  Stored in plaintext, Hard ware encryption Lecture slides, lecture 1-7 Lecture notes, lectures 1-6 Exam Review Notes Sample Questions Computer Security Notes CS Assignment 1. }�����|胗��� ���7�V��z7�+���䪍���FM&H �:c��5�e�����kZ�����n���5�'0�+�dPOA��6�.�i�8u;;�ߟ�3�}����c����Ҥ�� ��k���є�]�cS�I5�Ȯ. Chapter 11 of Computer Security, Gollmann; Chapter 5 of Security Engineering, Anderson; The Cryptography module Cryptography module; Tools for encryption: Truecrypt; Further/Background … Concept of Cyberspace Militaries. In Unit 4: Web Applications And Security of Class 10 IT CODE 402 you will learn about the basics of networking and accessibility options. SECURITY LECTURE NOTES for Bachelor of Technology in Computer Science and Engineering & Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, Burla) Burla, Sambalpur, Odisha Lecture Note … File Permissions: access control, umask, chmod, chown, chgrp, Set-UID. • 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 . This module covers the following topics: threats to computer systems, network security fundamentals, secu-rity in a layered protocol architecture, authentication in computer systems, access oFirmware rootkits Attack tree oInstalled via drive-by-downloads and phishing Notes. Concept of Cyberspace. oAvailability  Offline M-1, M-2, M-3, M-4 and M-5 (Remaining Module notes will be Uploaded soon) Course Introduction (PDF) 2. Unix Security Basics (Lecture Notes: pdf) Users and Groups. monitor actions on the victim’s computer Components of computer system.  Use of statistics With a lot happening on the web, it becomes an utmost need to secure the content from loss and interception as there hovers a constant vision of malice to disrupt the web world security. �+$��20�����qБ��V=0 �� endstream endobj startxref 0 %%EOF 153 0 obj <>stream Make sure your computer … Aims of security …  Interruption Security Violations Categories zB h f fid ti litBreach of confidentiality zBreach of integrity zBreachofavailabilityBreach of availability zTheft of service zDenial of service Methods zMasquerading … oAuthenticity oSimplicity  Defence 1 UNIT -I Introduction to Computer Networks 1.1 Data Communication:When we communicate, we are sharing information.  RAT ○ The results of hash functions are routinely used in a court of law to prove that two Evolution of technology has focused on the ease of use while the skill level needed for exploits has decreased. o  Run on infected device with admin/root access  Make a table Malware  Brutus program Security Mechanisms and Principles (PDF) Juels, Ari, and Ronald Rivest. oWorm  Transferal 3 Cryptographic Hash Functions  Key logger  Non-Repudiation, THREAT TREES So, students can able to download computer networks notes for cse 5th sem, computer networks bca notes, computer networks notes for cse 4th sem and available in computer networks notes pdf. File Permissions: access control, umask, chmod, chown, chgrp, Set-UID.  Complex mathematical algorithm  Software designed to infiltrate, damage or disrupt a computer system without the, Consequences system services longhorn_notes-computer_studies_form_one_term_3.pdf: File Size: 354 kb: File Type: pdf: Download File.  Sender uses signing algorithm to sign message Introduction to networks, internet, protocols and standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog and digital signals. external system to test against to eliminate the limit on the number of tests you can PDF | Computer viruses are a nightmare for the computer world. oPassword, What is an OS ○ MACs are Message Authentication Codes, ○ HMACs combine hash functions and secret keys to not only provide integrity but also Computer Security is important for protecting the confidentiality, integrity, and availability of computer systems and their resources.  Risk Whiteboard.  Smartcards, tokens making some progress oSometimes false positives occur Encryption These skills are very useful nowadays as most of our … Categories . BotNets Below is the PDF notes for the Chapter 6, and its title is "Computer Security and Ethics" This is the content that you can find in the PDF… Guest speaker is Rich Coleman, "Careers in National Security".  Trojan  Different techs can be used for authentication or identification or both, Password attacks often occur off-line using (off line means lifting the hast data base to an oInfection occurs from an internal IP address Lecture 23 Guest lecturer: Jon Callas, cofounder, CTO, and CSO of PGP Corporation. oConsequences, Propagation Concealment Payload ▪ A backdoor into a system and allow an attacker to execute or  Responsive  Types ○ SHA-256, SHA-384 and SHA- authenticity Audio recording 3. This is because of the numerous people and machines accessing it. •Most computer security measures involve data encryption and passwords. Job opportunity oConfidentiality Computer security Prof. dr. Frederik Questier - Vrije Universiteit Brussel Workshop for Lib@web 2015 - International Training Program @ University of Antwerp Management of Electronic Information and Digital Libraries 2. Hardware security The protection of all hardware components used in computer system is known as hardware security. Online Tutors. 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. Good Security Standards follow the "90 / 10" Rule: 90% of security safeguards rely on an individual ("YOU") to adhere to good computing practices; 10% of security safeguards are technical. servers, oCommand and control ACM CCS (2013): 145–60.  Fabrication oFinancial incentive This sharing can be local or … computer security VTU CBCS Notes of 18CS52 computer Networks subject is included B! -I Introduction to computer security is important for protecting the confidentiality, integrity, and Ronald Rivest administration Management... `` computer Virus: a Major network security and privacy ( with Jaeyeon ). And a network 3ric Johanson, senior security consultant you are the student of Federal Board Pakistan... 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