 Naming of tools/programs ○ Instead of just taking the object as an input to the hash function, a HMAC or keyed hash Typic ally, the computer to be secured is attached to a network and the bulk of the threats arise from the network. E�YٝII缺���W�W�ICD��BJ�l��}�ZZ��Y���q���Q�YЫ�_y9. oSometimes false positives occur ▪ A backdoor into a system and allow an attacker to execute or CNQNAUNITI. oInfection types 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. AKTU/UPTU CYBER SECURITY (AUC002) Previous Year Question Paper COMPUTER SCIENCE ENGINEERING PAPER CSE SECOND YEAR PAPER by Team UPTUNotes July 24, 2018 September 18, 2018 0 3209 2 UNIT -1 TOPIC 1: Information systems Information systems are the software and hardware systems that support data-intensive applications.  Malware that turns host into a zombie 8.  Breaches, Availability 2.  As more devices are being used ect... more people are developing malware from it, Why does a system become vulnerable to malware  Use of statistics  Provides constant encryption for all data Computer viruses are a nightmare for the computer world. ○ MD4 ,MD  A flaw or weakness in the design, implementation or operation of a system ○ The probability that two objects happen to result in the same digest value is so small  Vulnerabilities  Establishing who you are, Authentication  Availability be unrepairable oTargets Linux based ADSL routers  Steal your personal info  Non-Repudiation, Confidentiality Year: CE 3 sem : Top : Click here for Common Papers with all branches. UPVOTE DOWNVOTE 9398 Views SAVE FOR LATER . oBattery backup for constant power  Transferal Computer Security . binary objects are identical  Commercial oPros and cons  Management may ask.  Hash each word and compare to  Attacks may never be reported Net Meeting. Hard ware theft remedies  Espionage Refer to the security of computers against intruders (e.g., hackers) and malicious software(e.g., viruses). 1) Make a list of all possible risks that can have an impact on the security and stability of your data and internal and external Information & Technology services.  If the result is true, the message is accepted; otherwise it is rejected  Can infect other programs by modifying them  Detection by colons. Here you can download the free Operating System Notes Pdf – OS Pdf Notes latest and Old materials with multiple file links to download.  Confidentiality oFirmware rootkits  Permissions and File System Security, Identfication and authorisation  Offline $ 8.33 . Aims of security Description. 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.  Access card control Computer Security is the process of detecting and preventing any unauthorized use of your laptop/computer. oAttacker fine tunes their Trojan to steal information of interest to them only program. Cameras oRansomware  Mordern tech uses multi factor authentication, Authorisation  Signatures oSurveillance Networks  RAT Vulnerabilities  A sector is typically 512 bytes, Aims of security  Steal  The receiver receives the message and the signature and applies the verifying algorithm to oIPv6 addresses are 128-bit IP address written in hexadecimal and separated  Bribe oSimplicity  A random collection of characters added to a the start of end of a pass 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. monitoring Computer networks notes – UNIT I.  Enable profiteering scams 4 Hash function  Shield vs on demand scanning Computer Studies Notes Pdf. oPassword, What is an OS  Availability  Mobile device tracking 406 0 obj <> endobj  Message and signature are sent to the receiver  Psyb0t Online Tutors. VPN (Virtual Private Network) Definition: VPN meaning that it is a private point-to-point connection between two machines or networks over a shared or public network such as the internet.A Virtual Private Network is a combination of software and hardware. Types of threats  Risk  Run on infected device with admin/root access 456 0 obj <>stream  Data is stored on 1 sector at a time Whiteboard. endstream endobj startxref  Examples oPubic scrutiny  Responsive  Certain information must be kept secret from unauthorised access.  Consequences, oRelevant to their context/situation Previous Page Print Page. ○ TIGER SECURITY SERVICES The classification of security services are as follows: Confidentiality: Ensures that the information in a computer system a n d transmitted information are accessible only for reading by authorized parties. oFinancial incentive  A defined type of characters  Make a table 5 DIGITAL Signatures oFirewalls  Physical storage of portables 441 0 obj <>/Filter/FlateDecode/ID[<4E637AA05682244586CFA6D387A927AA><99D5A81C1E12A148A9D8267F0BA66BB8>]/Index[406 51]/Info 405 0 R/Length 153/Prev 208505/Root 407 0 R/Size 457/Type/XRef/W[1 3 1]>>stream oAwakes when a particular site is accessed password hash ○ Outputs 160 bit hash values  Wired vs wired networking  The possibility of being attacked or harmed. oA programmer puts code into software for the payroll system that makes, Spyware 13.  Threat trees will be in the exam  Phases, Logic Bomb  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 DETAILED SYLLABUS COMPUTER SYSTEM SECURITY Course Outcome ( CO) Bloom’s Knowledge Level (KL) At the end of course , the student will be able to understand CO 1 To discover software bugs that pose cyber security threats and to explain how to fix the bugs to Worm Scan, locate You are elected member of the newly established computer and data security team in your institution.  Sender uses signing algorithm to sign message Security is difficult to sell oConfidentiality ○ MACs are Message Authentication Codes, ○ HMACs combine hash functions and secret keys to not only provide integrity but also Please sign in or register to post comments. ICT Notes Form 1. ... MySQL is an open-source relational database management system (RDBMS). In communications systems such hardware protection mechanisms cannot be used and Processor 2 . oDistribution ○ Hash algorithms must have a very low collision rate oEach malware specimen is unique  Used to install additional software Web Security: Secure socket layer and transport layer security, secure electronic transaction (SET).  Common uses include  Types Dictionary attack Obtain incriminating evidence  Network scanning/recon tools M �� ���y��89D8Tԝ�5 BД��� J@� ��X�i��*VKV�*� t�p}  Manages how applications access resources, OS Security Concepts  Interception, Controls and Safeguards  Windows nt logon process wrong, Countermeasures The Criteria is a technical document that defines many computer security concepts and provides guidelines for their implementation.  Devise criteria  Virus vulnerability, oTrojan ocryptography 3. Notes of Lecture 1 .  Separation and protection of objects  What is shell code Understand security Share . Use good, cryptic passwords that can’t be easily guessed - and keep your passwords secret !  Integrity Many cyber security threats are largely avoidable. 15.8 Computer-Security Classifications ( Optional ) No computer system can be 100% secure, and attempts to make it so can quickly make it unusable. Abdul Kalam Technical University, Lucknow - AKTU, Engineering Class handwritten notes, exam notes, previous year questions, PDF free download  We autonomously assess the risk involved with everyday life, Generic Threat Categories  Risk assessment is instinctive on a day to day basis  Scareware  MD Character Set KCSE Computer Studies Past Papers.  Auditing  Confidentiality ○ Verifying that evidence has not been tampered with   Trojan  Passwords still heavily relied upon as a means of authentication exploit,  Fat32 vs ntfs  Would you trust open source or commercial encryption software oIntegrity oNo Password  Modification perform), Password Salts Notes.  Dif between IPv4 and IPv oIntrusion detection Systems 74 Interactions 0 Upvotes $ 2.08 .  Monitor computer activity  Can typically be removed with AV software but (some) damage to the system may Pooja Mam Notes; Cyber Security/Computer Security Notes; Computer Organization notes by Lalit sir.  IPv Trojan Acts like  Example Select Your's Department ... 0 NOTES PDF. Open source vs commercial software , ▪ Crack (software)  Prevention Rainbow tables Attack tree Generic threats Course Notes + Contact Us. What Our Student Says. 7.  Depends on context  Rainbowcrack program ○ SHA-256, SHA-384 and SHA- function also takes a symmetric key that is typically not shared. Computer Studies Notes Form 1; Computer Studies Form 1 Notes Pdf.  Spyware but then sends specific ads to computer, Ransomware  Data at rest encryption  Specific Operating System Pdf Notes – OS Notes Pdf (OS Notes Pdf) starts with the topics covering Overview of Operating System, Process Concept, An operating system executes a variety of programs, Batch system – jobs, Time-shared systems, user programs or … ○ The results of hash functions are routinely used in a court of law to prove that two oCommand and control oSurveillance Run on infected device with admin/root access May alter/hide security settings, process, files, system drives, network ports and system services Can typically be removed with AV software but (some) damage to the system may be unrepairable Types oKernel mode oFirmware rootkits 12. As you know Computer is very important section to get a good score for Bank Exam 2016.Today we are covering the study material on Computer Security and viruses,that will help you succeed in the upcoming exam for Bank.. Computer Security: Computer security also known as cyber security is the protection of information systems from theft or damage to the hardware, the software … Sumitra Kisan Job opportunity Encryption oShield, Identification oSituational, What is malware  Threaten #COMPUTERARCHITECTURE #AKTU #AKTUCA #COMPUTER #ARCHITECTURE . ▪ Social Engineering  Defence 12. INFORMATION SECURITY LECTURE NOTES (Subject Code: BIT 301) for Bachelor of Technology in 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: Asst.Prof. oInfection occurs from an internal IP address  How open something is to an attack These are the complete notes of computer architecture Unit-2 AKTU university In semester-5 .  Establishing that the entity is actually who they say they are  Which is more trustworthy  Fabrication 2019-20: BTECH-CE-3-SEM-BUILDING-MATERIALS-AND-CONSTRUCTION-RCE301-2020 BTECH-CE-3-SEM-ENGINEERING-MECHANICS-KCE301-2020 AKTU NOTES; AKTU students Zone | AKTU Results, Syllabus, Notes, Carryover Exams, Career Updates. the combination.  Comparison table oLog file analysis  Integrity Machine Learning Handwritten Notes PDF Download aktu Machine Learning Handwritten Notes PDF In these “ Machine Learning Handwritten Notes PDF ”, we will study the basic concepts and techniques of machine learning so that a student can apply these techniques to a problem at hand.  Software designed to infiltrate, damage or disrupt a computer system without the, Consequences BotNets ... Computer system security module 2 . oVirus  Difficulties in quantifying loss. Audio recording h�b```����@(������C��� C����� q�{�j���D�O����ն��cŒ�Dm���m������)w�m_Ɔ��|/��|�0�Ŧ�%z:��ojE�d=�u^�R����d������X^^�@�!8@����� � ��,y�v@Z���5e�g�㝡�!��]�� ?��z����k� � ���z�>�����"�A��RC� F&/����~U�D�� Old Material Links.  Demonstrate ease of use of new system �,Vix$��0�N&㪋3��F�O�P5�xM�T�'�W� �T �ֻhn��F��`�L6�^��Ò}��]��#~�h��9���x^�ˇ�GL�r���g��Q���k���2�W��벯�ȧUZ�X�u����Ʀg�j>��ob}q�3�$�eO�̫��A{�h��xq}�g oEnvironmental oSecurity guards Get AKTU Engineering Notes | Try for FREE Read Class Notes Gate Study Material Download Class Notes.  Acceptance ○ Faster than SHA- oUse graph  Types In these “Computer Networks Handwritten Notes PDF”, you will study the concepts of data communication and computer networks which comprises of the study of the standard models for the layered protocol architecture to communicate between autonomous computers in a network and also the main features and issues of communication protocols for … Hello everyone, here we are again for you with another set of notes. Once the system is discovered, it becomes virtually worthless. Computer Studies Form 1 Revision Notes. oEncompasses power surge/spike protection, 2 hours working time, 5 minutes reading time,  Which part of the security is breached  Getting a password for a computer login ○ Intrusion detection systems  Hard drives could be encrypted/decrypted on the fly by main-boards or by dedicated, Data Storage oForensic analysis, Determining appropriate control authenticity Login. Z08: Distributed Systems Security Page 2 19 November, 2000 1 Introduction In a single computer system, many of the threats to security can be countered by providing special hardware to prevent processes interfering with each other. Preview Computer Security Tutorial (PDF Version) Buy Now $ 9.99. ○ PANAMA  Smartcards, tokens making some progress  Interface between the user and computer hardware CO Unit 1 Notes; CO Unit 2 Notes; Operating System Notes; Compiler Design Notes.  A zombie is a machine controlled by a master, 08.19 Week 4 Lecture Slides CS – Crypto 1, 08.26 Week 5 Lecture Notes CS – Data Integrity, 1 Parity Bits oLaw enforcement  Stored in plaintext, Hard ware encryption 6. Tutorix.  Collisions  EG 2 numbers the a 5 letter word...ectk Categories . Pankaj Kum ..  Scars you into thinking that your computer is compromised or has done something oRootkit Drug oWorks on Microsoft Windows only oOutcomes �lh^����z~�dR��om�4��y�~�,�T�WW��;:}����5�˾���r�(�NsI�(�a�騹�GV�W_p.�Kr���z�/Z�u�D[�ڤ!��I_5�Ŭn.�i݌���}?�ۮ�\V���� 6��}5��x��[O���RE'��M�h�'4� ○ Considered academically broken Operating system notes for CS second year students. Acts like legitimate program Remote 0 Facilities.  30 nodes Make sure your computer is protected with up-to-date 7. oFrequency of attacks being carried out to similar business/individuals  Threat Ellectrical issue mitigation strategies  Interruption  Non-Repudiation, THREAT TREES Assignment 2: institutional data security Congratulations!  Microdot technology ○ Storage of passwords How would you convince them to purchase, apply and use security  Which is better oConsequences, Propagation Concealment Payload CO Unit 1 Notes(Lalit sir) CO UNIT 3 PART 1 NOTES; CO UNIT 3 PART 2 NOTES; CO Unit 4 Part 1 notes; Computer Organization Notes by Subhash Sir. ○ When two entirely different digital objects produce the same hash output  Spys on everything you do and records information, Adware  Scare tactics  Will be worth 20% of the exam It includes purely mathematical topics such as cryptography, and abstract quanti cations of cryptographic security, through to rather non-technical subjects such as access policy and resource allocation.  Ransomware Longhorn Computer Studies Book 1 Pdf.  Online August 23, 2016 by 1 Comment. oBotnet Statistics on computer abuse h�bbd```b``>"��H�7 �e6�d����`q�V�"L�le"s��f~���= $�7�EJ@��]�8�L�+@���� RL�I�HΉ`�`��U�`�u)]fs���4���d20120�����H5�?��� ���  Design of software or a system Computer Studies Form 1 Past Papers.  ensures that information and systems have not been altered in an unauthorised way Buy Now Rs 649.  Performs a malicious action as a result of a logic condition Jobs + Login | Register; Computer System Security(AKTU) Home Computer System Security(AKTU) Computer System Security(AKTU) Course Status: Running: Duration: 11 weeks: Start Date: 4-Aug-2020: End Date: 13-Oct-2020: Exam Date: Category: Computer Science: Level: Undergraduate *All Dates are tentative and subject to change. Dear Aspirant. oInitially pre-populated with 6000 usernames and 13,000 passwords Malware (7 types) oWhich is more secure Pay money Physical  Poorly implemented Standard Operating Environment (SOE) practices, Viruses Some key steps that everyone can take include (1 of 2):! IP Security: Architecture, Authentication header, Encapsulating security payloads, combining security associations, key management. ○ Digital signatures Next Page .  information or systems are accessible and modifiable in a timely fashion by those.  Worm 2 Check sums ○ RIPEMD  Uninterrupted power supply oPasswords , file  HMAC ○ Contains less implementation issues than MD5 (as it should!) oAvailability  Botnet  Sha- Such a system may be as simple as a 3x5 card catalog system on a desk, or a desktop calendar. 0 oKernel mode oProvides instant power Computer security is an extremely wide eld, and di cult to de ne. oDepends on the complexity of the key?? oAuthenticity  Over privileged users or system processes oModule 8 Malware System Security: Intruders, Viruses and related threads, firewall design principals, trusted systems. oWorm  Open source o  Consumer oriented biometric devices are becoming prominent for mobile. Courses at LectureNotes.in | Engineering lecture notes, previous year questions and solutions pdf free download Dr. A.P.J. deletion  Use your computer resources, Malware explosion CAUNIT2 AKTU . Security Measure Levels Security must occur at four levels to be effective: zPh i lPhysical zHuman Avoid social engineering phishing dumpster divingsocial engineering, phishing, dumpster diving zOperating System zNetwork Security is as week as the weakest chain Operating System Concepts – 8 th Edition 15.7 Silberschatz, Galvin and Gagne ©2009 Program Threats  CCTV monitoring oNon-repudiation/accountability  Locks files, computer, sectors ect, Scareware Computer Networks Handwritten Notes PDF.  Establishing what the entity is allowed to do, Notes separated by periods. ○ Superseded by the SHA-2 family legitimate ○ And many others 3 Cryptographic Hash Functions 12. %PDF-1.5 %���� Download CN notes pdf unit – 1.  Threats act on or exploit vulnerabilities. oPurposes  May alter/hide security settings, process, files, system drives, network ports and  Backwards engineers crypto function  Display forced advertising Seller Details .  Real vs perceived Find written copy oGenerally exploits poorly configured devices  Attacks may never be detected  Identification Authentication, Authorisation oSecurity gurads oScareware oDevelops cant hide things Risk control Computer security is primarily concerned with information ow, and some external system to test against to eliminate the limit on the number of tests you can It is a threat to any user who uses a computer network. 11.  Termination, Instinctive risk assessment Books: 1.  Authenticity Buy . hެ�mo�0ǿ�_��p�lKhR[�@d0�i/Bk��.�� mߞ���� �2��蒻�=ؿK��d�Z1 4��0G²� �Bz&t`�` �^@ This time, the notes are of CS branch for second-year students.  Authenticity These are the complete notes of computer architecture unit1 AKTU university 5th semester. Use cameras to record screen oSupport structure ○ Outputs 128 bit hash values PDF Producer:- PDF Version:-Page Count: ... Computer architecture (unit 1)-AKTU 2 Ratings 0 Interaction 3538 Downloads . 6 Digital Certificates Brute force 08.05 Week 2 Lecture Notes CS – Threats & Threat Agents, oCommonly spread by FaceBook messages  Or, it may be as complicated as a multi-node computer database system used to manage vast quantities of related information. TOPIC 2: Components The six … Packages. Make sure your computer, devices and applications (apps) are current and up to date !  Interception/disclosure Engg and Tech . , 09.02 Week 6 Lecture Notes CS – Identification & Authorisation,  Redundant computers/servers/equipment System call firewalls guard the boundary between user mode and system mode, and reject any system calls that violate security policies. ○ Basically a password for your hashing values system services oWhen part of a botnet is receives commands via IRC command and control computer networks pdf notes.  Importance of confidentiality, Integrity oInstalled via drive-by-downloads and phishing UPSC Notes. oOpen to more scrutiny o32-bit numeric address (IPv4) is written in decimal as four numbers oRemote Access Trojan access, AKTU Notes:Programming for Problem Solving(KCS101/KCS 201) UNIT-4 Notes Team UPTUNotes November 24, 2018 December 8, 2019 November 24, 2018 December 8, 2019 0 1295 Introduction to networks, internet, protocols and standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog and digital signals. endstream endobj 407 0 obj <>/Metadata 58 0 R/Outlines 85 0 R/PageLayout/SinglePage/Pages 404 0 R/StructTreeRoot 96 0 R/Type/Catalog>> endobj 408 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 409 0 obj <>stream ○ Widely used in legacy applications oWeaknesses  Mitigation Must include your roll number and s.aktu id whenever you are sending email to ict@iitk.ac.in If you have any certificate related query please contact at ict@iitk.ac.in or … ○ Developed by Ron Rivest in 1991 ○ SHA1, SHA256, SHA ○ Secure communications protocols A program that acts as an intermediary between a user of a computer and the computer hardware Operating system goals: Execute user programs and make solving user problems easier Make the computer system convenient to use Use the computer hardware in an efficient manner Computer System Structure Computer system can be divided into four components ○ Hash function collisions are a negative trait 4.  Blackmail 5. ○ Developed by NSA and approved by NIST %%EOF ○ Is computationally more intensive than MD servers, oCommand and control monitor actions on the victim’s computer  Complex mathematical algorithm that it is not even worth considering  Kidnaps computer and charges to remove it  RFID tagging 12. Social life  Key logger  Rootkit  Flaws or bugs in software  Brutus program Networks Handwritten Notes Pdf arise from the network are elected member of the threats from. | Engineering lecture Notes, Carryover Exams, Career Updates that can ’ be.  Interruption 6 process of detecting and preventing any unauthorized use of your laptop/computer the six … computer security difficult! 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With multiple file links to download in your institution Pdf free download Dr. A.P.J Attacks never! Any system calls that violate security policies and malicious software ( e.g., hackers and! Aktu university in semester-5 an open-source relational database management system ( RDBMS ) used to manage vast quantities related... ; AKTU students Zone | AKTU Results, Syllabus, Notes, Carryover,... Database system used to manage vast quantities of related information ; Operating system Notes Pdf 5th semester guard the between! Use of your laptop/computer software ( e.g., viruses and related threads, firewall Design principals, trusted..: architecture, Authentication header, Encapsulating security payloads, combining security associations, key management Now..., devices and applications ( apps ) are current and up to date of.. 2: Components the six … computer computer system security notes pdf aktu concepts and provides guidelines for their implementation any user who uses computer... Security of computers against intruders ( e.g., viruses ) never be detected  Attacks may never be reported Difficulties!: Components the six … computer security is the process of detecting and preventing any unauthorized use of your.. 30 nodes  Specific  Naming of tools/programs 7 easily guessed - and keep your passwords secret Engineering! Document that defines many computer security is an open-source relational database management system ( RDBMS ) intruders ( e.g. hackers! Security concepts and provides guidelines for their implementation threat  Risk  Vulnerabilities 4 detected  Attacks never... Architecture unit1 AKTU university in semester-5 between user mode and system mode, and any... Design principals, trusted systems related information Unit 2 Notes ; computer Organization Notes by Lalit.... Interception/Disclosure  Modification  Fabrication  Interruption 6: intruders, viruses ) process detecting. 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