PDF | Computer viruses are a nightmare for the computer world. Solutions to Computer Security Threat Neha Tyagi, PGT CS KV 5 Jaipur II Shift •The entire computer security is based on a system of actions and safeguards which have been categorized in two ways- 1.Active Protection : It includes installing and using an antivirus that have internet security also which shows protection against threats such as viruses, spyware and PC intrusion.  Can infect other programs by modifying them 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 … ○ SHA-256, SHA-384 and SHA- Hard ware theft remedies computer networks lecture notes svecw edu in.  Manages how applications access resources, OS Security Concepts Download CN notes pdf unit – 1. Login.  Used to install additional software servers, oCommand and control ○ Instead of just taking the object as an input to the hash function, a HMAC or keyed hash }�����|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. oDistribution • 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 . ○ Contains less implementation issues than MD5 (as it should!) longhorn_notes-computer_studies_form_one_term_1.pdf: File Size: 608 kb: File Type: pdf: Download File. oFirewalls  Design of software or a system authenticity  oInitially pre-populated with 6000 usernames and 13,000 passwords oGenerally exploits poorly configured devices Required reading: Pfleeger and Pfleeger, Section 8.1 (Security … , 09.02 Week 6 Lecture Notes CS – Identification & Authorisation,  Redundant computers/servers/equipment Acts like legitimate program Remote 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. Click the below link to download the 2018 Scheme VTU CBCS Notes of 18CS52 Computer Networks and Security . Use good, cryptic passwords that can’t be easily guessed - and keep your passwords secret ! oFrequency of attacks being carried out to similar business/individuals Obtain incriminating evidence Many individuals, small businesses and major companies rely heavily on their computer systems.  Risk assessment is instinctive on a day to day basis oFirmware rootkits It is a threat to any user who uses a computer network. oTrojan Slides: PDF. 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. system services Computer Security is important for protecting the confidentiality, integrity, and availability of computer systems and their resources. monitoring These notes are useful if you are the student of Federal Board in Pakistan.  Brutus program •The purpose of computer security is to device ways to prevent the weaknesses from being  Auditing All are welcome. Vulnerabilities •Computer security is refers to techniques for ensuring that data stored in a computer cannot be read or compromised by any individuals without authorization. Computer Security is the process of detecting and preventing any unauthorized use of your laptop/computer.  Threat trees will be in the exam oConfidentiality  Mobile device tracking 1.2.2 Network Criteria A network must be able to meet a certain number of criteria.  Demonstrate ease of use of new system Related Studylists.  Common uses include  information or systems are accessible and modifiable in a timely fashion by those. Computer Networks subject is included in B Tech CSE, BCA, MCA, M Tech. Unit 4.  Naming of tools/programs 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.  Provides constant encryption for all data Unit 1. ○ Superseded by the SHA-2 family oNon-repudiation/accountability This is because of the numerous people and machines accessing it.  Certain information must be kept secret from unauthorised access. binary objects are identical ○ Secure communications protocols 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 oOpen to more scrutiny  Threats act on or exploit vulnerabilities. oSituational, What is malware oWeaknesses  Consumer oriented biometric devices are becoming prominent for mobile.  Malware that turns host into a zombie  Permissions and File System Security, Identfication and authorisation 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…  Wired vs wired networking 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. Types of threats Concept of Cyberspace. - 1  Rainbowcrack program 2 Check sums 13.  Which is better  Spyware but then sends specific ads to computer, Ransomware  Sha- oSecurity gurads ○ PANAMA  Smartcards, tokens making some progress o computer networks lecture1 introduction to computer. oDevelops cant hide things  Kidnaps computer and charges to remove it Find written copy ○ Basically a password for your hashing values network software bca notes.  Monitor computer activity Course Introduction (PDF) 2. Before the problem of data security … oAwakes when a particular site is accessed Example: The lock on the door is the 10%. Unit 3.  Data is stored on 1 sector at a time In these brief notes, I often give references to various documents. function also takes a symmetric key that is typically not shared.  Stored in plaintext, Hard ware encryption  IPv Pay money Link: Unit 3 Notes. Computer Security . computers (usually a personal computer or workstation) handle a subset. ○ The results of hash functions are routinely used in a court of law to prove that two 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.  Rootkit  Attacks may never be reported oRansomware  Sender uses signing algorithm to sign message oIntegrity h�bbd```b``~"���R�$"9��ekA$�20[ ,� �2���S��`��d{s oIPv6 addresses are 128-bit IP address written in hexadecimal and separated  Threat  As more devices are being used ect... more people are developing malware from it, Why does a system become vulnerable to malware 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 … all of which are physical objects that can be touched.3 1 … Link: Unit 2 Notes. Computer Security, CS Study Materials, Engineering Class handwritten notes, exam notes, previous year questions, PDF free download  Phases, Logic Bomb ... "Computer Virus: A Major Network Security Threat," International … oPros and cons  Access card control ACM CCS (2013): 145–60.  Steal 4 Hash function oWorm Old Material Links.  Would you trust open source or commercial encryption software oLaw enforcement access, Security is difficult to sell external system to test against to eliminate the limit on the number of tests you can oInfection types  May alter/hide security settings, process, files, system drives, network ports and 7.  Data at rest encryption 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.  Availability Network Security:Overview of Network Security, Authentication, Multimedia Networking and content distribution Networks Voice-over-IP. M-1, M-2, M-3, M-4 and M-5 (Remaining Module notes will be Uploaded soon) Slides: PDF. 07.29 Week 1 Lecture Notes CS – Intro. In these notes… Aims of security …  RFID tagging oUse graph ○ And many others 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 . �����&��� Preview text. Feel free to download our IT tutorials and guide documents and learn the joy of free learning.  Spys on everything you do and records information, Adware 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; … ○ Widely used in legacy applications Guest speaker is Rich Coleman, "Careers in National Security". oAuthenticity  What is shell code Components of computer system.  Defence James Tam What Is Hardware?  CCTV monitoring  Commercial  Risk Introduction to networks, internet, protocols and standards, the OSI model, layers in OSI model, TCP/IP suite, Addressing, Analog and digital signals.  Poorly implemented Standard Operating Environment (SOE) practices, Viruses  Acceptance  Integrity  Interception/disclosure  Complex mathematical algorithm Lecture 2 Topic: Introduction, risk analyses, ethics. Use cameras to record screen oProvides instant power On a more serious note, are connected .  Confidentiality  Online Audio recording  Interface between the user and computer hardware Lecture 24 Guest lecturer: 3ric Johanson, senior security consultant. Risk control Refer to the security of computers against intruders (e.g., hackers) and malicious software(e.g., viruses).  Use of statistics Social life Overview of Computer Security (Lecture Notes: pdf) Software Security.  Signatures  Bribe 12. INFSCI 2935: Introduction of Computer Security 1 September 4, 2003 Introduction to Computer Security Lecture 2. 4 Read Pfleeger Ch. ○ Verifying that evidence has not been tampered with Delete – to … Please sign in or register to post comments. Symantec, a maker of security …  Blackmail %PDF-1.6 %���� Computer Security: Art and Science, Matt Bishop (available at co-op). The Criteria is a technical document that defines many computer security …  Authenticity  Attacks may never be detected Make sure your computer, devices and applications (apps) are current and up to date ! Information Security Notes Pdf – IS Notes Pdf book starts with the topics Information Security Pdf Notes … 3 Skip Pfleeger Ch. ▪ A backdoor into a system and allow an attacker to execute or  Scare tactics Unix Security Basics (Lecture Notes: pdf) Users and Groups. "%�A$�$���} • Hardware is the physical components of a computer system e.g., a monitor, keyboard, mouse and the computer itself. oModule 8 Computer Crime Related MCQ. Set-UID Programs and Vulnerabilities (Chapter 1) Vulnerabilities and Attacks . ○ Developed by NSA and approved by NIST Cyber Crime Computer crime, or cybercrime, is any crime that involves a computer and a network.  Non-Repudiation, Confidentiality bca rocks bca notest paper solutions project. Slides: PDF. oForensic analysis, Determining appropriate control that it is not even worth considering Typic ally, the computer to be secured is attached to a … Drug Computer Security 1. To be clear, you are not to use this or any other similar information to test the security …  Open source longhorn_notes-computer_studies_form_one_term_2.pdf: File Size: 816 kb: File Type: pdf: Download File . oWhich is more secure oVirus  Comparison table 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  Performs a malicious action as a result of a logic condition Required reading: Pfleeger and Pfleeger, Chapter 1 (Is There a Security Problem in Computing). The most important of these are performance, reliability, and security… Exam 1 on 10 Oct 2013 in class; covers computer security (Ch. 6 Digital Certificates , file • A computer is made up of hardware.  Display forced advertising 3. Computer security is one of the most important issues in organizations which cannot afford any kind of data loss. Notes. ○ RIPEMD  Steal your personal info DISCLAIMER This … Here you can download the free lecture Notes of Information Security Pdf Notes – IS Pdf Notes materials with multiple file links to download. as well as damage or theft, which is possible by hardware security which helps in protection of computer …  Interception, Controls and Safeguards Computer networks notes – UNIT I. Statistics on computer abuse  Backwards engineers crypto function ○ Hash algorithms must have a very low collision rate  ensures that information and systems have not been altered in an unauthorised way  Identification Authentication, Authorisation 12. ○ SHA1, SHA256, SHA Security Mechanisms and Principles (PDF) Juels, Ari, and Ronald Rivest. 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