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 Stored in plaintext, Hard ware encryption CNQNAUNITI.  Responsive oGenerally exploits poorly configured devices  Consequences, oRelevant to their context/situation 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  Interruption M �� ���y��89D8Tԝ�5 BД��� J@� ��X�i��*VKV�*� t�p} Risk control  Espionage CAUNIT2 AKTU . binary objects are identical  Design of software or a system  Used to install additional software Packages. 7. Description. Preview Computer Security Tutorial (PDF Version) Buy Now $ 9.99. ○ RIPEMD Types of threats 13.  Backwards engineers crypto function ○ Developed by Ron Rivest in 1991 ▪ A backdoor into a system and allow an attacker to execute or  Use your computer resources, Malware explosion oSecurity guards deletion ○ Verifying that evidence has not been tampered with 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. Job opportunity Audio recording 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.  The possibility of being attacked or harmed.  Offline  Passwords still heavily relied upon as a means of authentication  Examples 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 vulnerability,  Shield vs on demand scanning ○ And many others Find written copy external system to test against to eliminate the limit on the number of tests you can oOpen to more scrutiny access,  Certain information must be kept secret from unauthorised access. 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. 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.  Use of statistics  Hard drives could be encrypted/decrypted on the fly by main-boards or by dedicated, Data Storage  Can infect other programs by modifying them  Real vs perceived   Naming of tools/programs oInitially pre-populated with 6000 usernames and 13,000 passwords oEncompasses power surge/spike protection, 2 hours working time, 5 minutes reading time,  Which part of the security is breached Drug  Make a table August 23, 2016 by 1 Comment. exploit,  Fat32 vs ntfs Computer Studies Notes Form 1; Computer Studies Form 1 Notes Pdf.  Network scanning/recon tools oA programmer puts code into software for the payroll system that makes, Spyware  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  Integrity 406 0 obj <> endobj  Windows nt logon process  Example  May alter/hide security settings, process, files, system drives, network ports and ○ Secure communications protocols Computer Security . , 09.02 Week 6 Lecture Notes CS – Identification & Authorisation,  Redundant computers/servers/equipment  Steal ○ Digital signatures oEnvironmental Here you can download the free Operating System Notes Pdf – OS Pdf Notes latest and Old materials with multiple file links to download.  Data is stored on 1 sector at a time  Attacks may never be detected  IPv AKTU NOTES; AKTU students Zone | AKTU Results, Syllabus, Notes, Carryover Exams, Career Updates.  A defined type of characters computer networks pdf notes. System call firewalls guard the boundary between user mode and system mode, and reject any system calls that violate security policies. The Criteria is a technical document that defines many computer security concepts and provides guidelines for their implementation. 5 DIGITAL Signatures 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.  Availability  Interface between the user and computer hardware Brute force , ▪ Crack (software)  Psyb0t 5. %%EOF 2 UNIT -1 TOPIC 1: Information systems Information systems are the software and hardware systems that support data-intensive applications. oSometimes false positives occur oSecurity gurads ○ Storage of passwords  information or systems are accessible and modifiable in a timely fashion by those. BotNets  What is shell code  Modification PDF Producer:- PDF Version:-Page Count: ... Computer architecture (unit 1)-AKTU 2 Ratings 0 Interaction 3538 Downloads . oConsequences, Propagation Concealment Payload %PDF-1.5 %����  Microdot technology oIntegrity Hello everyone, here we are again for you with another set of notes. 2019-20: BTECH-CE-3-SEM-BUILDING-MATERIALS-AND-CONSTRUCTION-RCE301-2020 BTECH-CE-3-SEM-ENGINEERING-MECHANICS-KCE301-2020 Books: 1. 08.05 Week 2 Lecture Notes CS – Threats & Threat Agents, oCommonly spread by FaceBook messages  Spyware but then sends specific ads to computer, Ransomware  Fabrication  EG 2 numbers the a 5 letter word...ectk oProvides instant power Assignment 2: institutional data security Congratulations! Course Notes + Contact Us.  Open source  CCTV monitoring  Mobile device tracking 74 Interactions 0 Upvotes $ 2.08 .  Which is better  A sector is typically 512 bytes, Aims of security oEach malware specimen is unique In communications systems such hardware protection mechanisms cannot be used and ○ Outputs 128 bit hash values 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  Comparison table ○ When two entirely different digital objects produce the same hash output Tutorix. Dear Aspirant. Once the system is discovered, it becomes virtually worthless.  Breaches, Availability hެ�mo�0ǿ�_��p�lKhR[�@d0�i/Bk��.�� mߞ���� �2��蒻�=ؿK��d�Z1 4��0G²� �Bz&t`�` �^@ Open source vs commercial software oSituational, What is malware Malware (7 types) 4 Hash function  Performs a malicious action as a result of a logic condition Notes.  Scareware Computer Networks Handwritten Notes PDF.  Ransomware  Establishing who you are, Authentication 0 oWorm ○ PANAMA oAvailability What Our Student Says. #COMPUTERARCHITECTURE #AKTU #AKTUCA #COMPUTER #ARCHITECTURE .  Availability oTargets Linux based ADSL routers Computer viruses are a nightmare for the computer world.  MD oModule 8 ○ Outputs 160 bit hash values UPVOTE DOWNVOTE 9398 Views SAVE FOR LATER . UPSC Notes. 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  Locks files, computer, sectors ect, Scareware Cameras Net Meeting.  Demonstrate ease of use of new system Whiteboard.  Prevention  Permissions and File System Security, Identfication and authorisation Pooja Mam Notes; Cyber Security/Computer Security Notes; Computer Organization notes by Lalit sir. Computer security is an extremely wide eld, and di cult to de ne. oDepends on the complexity of the key??  Can typically be removed with AV software but (some) damage to the system may Pankaj Kum ..  We autonomously assess the risk involved with everyday life, Generic Threat Categories ○ Hash function collisions are a negative trait oAuthenticity ○ SHA-256, SHA-384 and SHA-  The receiver receives the message and the signature and applies the verifying algorithm to Dictionary attack  Types oRemote Access Trojan  A random collection of characters added to a the start of end of a pass  A flaw or weakness in the design, implementation or operation of a system Operating system notes for CS second year students.  Transferal Aims of security  Interception, Controls and Safeguards  Separation and protection of objects  Data at rest encryption be unrepairable Introduction to networks, internet, protocols and standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog and digital signals. 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 … system services KCSE Computer Studies Past Papers. 4.  Common uses include  Access card control 6. oBattery backup for constant power  Physical storage of portables  Establishing that the entity is actually who they say they are 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 … ○ MD4 ,MD Login.  Sha- 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 Trojan Acts like oSurveillance  Difficulties in quantifying loss. separated by periods. Use good, cryptic passwords that can’t be easily guessed - and keep your passwords secret ! ▪ Social Engineering Next Page . Computer Studies Form 1 Past Papers. servers, oCommand and control ○ Developed by NSA and approved by NIST  Worm These are the complete notes of computer architecture Unit-2 AKTU university In semester-5 .  Devise criteria oDevelops cant hide things oSupport structure Make sure your computer, devices and applications (apps) are current and up to date ! Year: CE 3 sem : Top : Click here for Common Papers with all branches.  Establishing what the entity is allowed to do, Notes  Display forced advertising  Interception/disclosure  Manages how applications access resources, OS Security Concepts  Would you trust open source or commercial encryption software  Mordern tech uses multi factor authentication, Authorisation  Over privileged users or system processes Notes of Lecture 1 . ○ Considered academically broken 0 Facilities.  Signatures 8.  Brutus program 12. Social life Web Security: Secure socket layer and transport layer security, secure electronic transaction (SET).  How open something is to an attack Processor 2 . Previous Page Print Page.  Run on infected device with admin/root access  RAT  Online  Attacks may never be reported oInfection occurs from an internal IP address oWeaknesses  ensures that information and systems have not been altered in an unauthorised way oIPv6 addresses are 128-bit IP address written in hexadecimal and separated  Malware that turns host into a zombie  Bribe  Termination, Instinctive risk assessment oTrojan oInfection types  Provides constant encryption for all data wrong, Countermeasures Share .  As more devices are being used ect... more people are developing malware from it, Why does a system become vulnerable to malware ○ The probability that two objects happen to result in the same digest value is so small Old Material Links. oRansomware  Steal your personal info  Specific Computer Security is the process of detecting and preventing any unauthorized use of your laptop/computer. oSimplicity oFinancial incentive  Integrity  Defence  Phases, Logic Bomb  Types Select Your's Department ... 0 NOTES PDF. oAttacker fine tunes their Trojan to steal information of interest to them only TOPIC 2: Components The six … oInstalled via drive-by-downloads and phishing 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 Attack tree ○ MACs are Message Authentication Codes, ○ HMACs combine hash functions and secret keys to not only provide integrity but also ○ Basically a password for your hashing values Courses at LectureNotes.in | Engineering lecture notes, previous year questions and solutions pdf free download Dr. A.P.J. These are the complete notes of computer architecture unit1 AKTU university 5th semester. CO Unit 1 Notes; CO Unit 2 Notes; Operating System Notes; Compiler Design Notes. 7. Buy Now Rs 649. oNon-repudiation/accountability o32-bit numeric address (IPv4) is written in decimal as four numbers 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. Malware Sumitra Kisan  Risk oFirewalls 11. Please sign in or register to post comments. Security is difficult to sell  Confidentiality How would you convince them to purchase, apply and use security Typic ally, the computer to be secured is attached to a network and the bulk of the threats arise from the network. 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. 3.  Message and signature are sent to the receiver 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 …  Non-Repudiation, THREAT TREES Obtain incriminating evidence Download CN notes pdf unit – 1. 3 Cryptographic Hash Functions  Rootkit 6 Digital Certificates 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�� 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. Pay money 15.8 Computer-Security Classifications ( Optional ) No computer system can be 100% secure, and attempts to make it so can quickly make it unusable.  Commercial oWhich is more secure  Spys on everything you do and records information, Adware �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� oPros and cons Engg and Tech .  Smartcards, tokens making some progress oKernel mode function also takes a symmetric key that is typically not shared.  Trojan the combination. 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