network security, cryptography,steganography
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Network security involves protecting computer networks through tools like firewalls, encryption, and digital signatures. Common security threats include TCP hijacking, packet sniffing, and unauthorized access to networks. Cryptography and steganography are methods used to secure communications and information. Cryptography involves encrypting data using techniques like public key infrastructure, while steganography hides secret messages within ordinary files like images or audio files. Both have benefits but also limitations, as strong encryption does not guarantee security if other vulnerabilities exist.
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Cryptography
This document provides an overview of cryptography. It begins by defining cryptography as the science of encrypting and decrypting written communications. It then discusses the history of cryptography dating back to ancient Egypt and the Spartans. The document outlines some common cryptosystem services like confidentiality, integrity, and authentication. It also discusses key concepts like keyspace, symmetric and asymmetric encryption algorithms like AES and RSA, and hybrid encryption approaches. The presentation concludes by thanking the audience and offering to answer any questions.
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Secret writing refers to cryptography and steganography. Cryptography involves encrypting messages so only authorized users can read them, while steganography hides information within other files or mediums. Common cryptographic techniques include symmetric and asymmetric encryption methods. Symmetric encryption uses a shared key between sender and receiver, while asymmetric encryption uses public and private key pairs. Steganography hides information by embedding it within images or other files.
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lec security
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IT Security for the Physical Security Professional
This document provides an overview of an IT security presentation for physical security professionals. The agenda includes introductions, an overview of IT security concepts and terminology, technical topics, and ways physical security professionals can help with IT security. Some key points covered include changing threats like identity theft and phishing, common attacks like man-in-the-middle and denial of service, and risks from things like laptop theft, wireless networks, and spyware. The presentation aims to help physical security professionals understand basic IT security principles and how they can support efforts to protect electronic information and networks.
Infomation System Security
Information system security deals with securing systems, information in transit, and establishing security services, mechanisms, and policies. It aims to provide confidentiality, integrity, authentication, and controlled access. Cryptography is the study of mathematical techniques used for these security objectives and includes symmetric and asymmetric encryption methods. Cryptanalysis involves attempting to defeat cryptographic techniques.
The ultimate privacy guide
This document provides a lengthy guide on how to protect privacy online through various methods. It discusses encryption techniques, using anonymity-focused software and browsers, anonymous payment methods like Bitcoin, securing communications and files, and other tips. The guide aims to help readers protect their privacy from mass surveillance by governments and other adversaries online. It provides details on setting up encrypted email, anonymous web browsing, secure cloud storage and more.
Ethical hacking
This document discusses ethical hacking and cybersecurity. It begins by defining hacking and distinguishing ethical hackers from other types of hackers like black hats. It then covers common hacking terms, techniques used by hackers like port scanning, and types of cyber crimes. The document emphasizes that ethical hacking involves testing a system's security with the owner's permission in order to strengthen security and prevent unauthorized access by malicious hackers.
Introduction To PKI Technology
The document provides an overview of a course on PKI (Public Key Infrastructure) technology. It outlines the topics that will be covered over two days, including secret key cryptography algorithms like AES and RSA, digital certificates, certificate authorities, and practical PKI applications like S/MIME, SSL, and IPSEC. The objectives of the course are to understand cryptographic fundamentals, public key infrastructure elements and how they interact, and why PKI is useful for enabling e-commerce and enhancing security.
It security &_ethical_hacking
This document provides an introduction to IT security and ethical hacking. It discusses common online threats like theft of passwords and malware attacks. It emphasizes the need for security to protect valuable information. It also discusses social engineering, keyloggers, trojans, and phishing as common cybercrimes. Worldwide hacking incidents and statistics on cyber crimes are presented. Methods for password protection and dealing with security threats are outlined.
Ethical hacking for information security
In this paper I discussed about the security flaws and Attacks performed by Various Hackers at various situations and protection Methodologies are mentioned.
Secrity project keyvan
1. Cryptography is used to provide security in electronic commerce by ensuring privacy, authenticity, and preventing forgery, alteration, eavesdropping and tracing of messages.
2. There are two main types of cryptography - symmetric which uses the same key for encryption and decryption, and asymmetric (public key) which uses different keys for encryption and decryption.
3. Common symmetric algorithms are DES and AES while RSA is an example of an asymmetric algorithm commonly used for digital signatures and encryption.
Need for cyber security
In this presentation, we talk about the need for cyber security in organizations to protect important data and prevent attacks on the systems installed in an organization.
Blockchain in cyber security
Blockchain has the potential to enhance cyber security by preventing fraudulent activities through consensus mechanisms and detecting data theft. As a decentralized storage medium, blockchain can prevent data theft from hackers by distributing data across multiple nodes. Using blockchain for security in DNS could make it difficult for hackers to break connections between domain names and IP addresses. Key benefits of blockchain for cyber security include distributed public key storage, decentralized data storage to remove centralized honey pots, and easy verification of software downloads and hardware provenance.
New internet security
Internet security involves protecting systems and data from unauthorized access. Common security threats include hacking, viruses, phishing, and denial of service attacks. It is important for users to implement security measures like firewalls and keep software updated to prevent intrusions and thefts of personal information.
NewIinternet security
Internet security involves protecting systems and data from unauthorized access. Common security threats include hacking, viruses, phishing, and denial of service attacks. It is important for users to implement security measures like firewalls and keep software updated to prevent intrusions and thefts of personal information.
Cyber Crime And Security
Short Presentation On Cyber Crime And Security which includes Cyber crime introduction and types , Hacking and its types, different Threats , and in last Prevention for Hacks and Threats.
Nt1310 Unit 6 Powerpoint
This document provides an overview of an Nt1310 Unit 6 Powerpoint presentation with the following key points:
1. The setup phase takes in a security parameter and selects a bilinear group with generator b. It selects attributes, exponents, and generates public and master keys.
2. The key generation phase takes a set of attributes as input and produces a secret key equivalent to those attributes. It selects a random number and calculates the key.
3. The encryption phase is not described in detail in this excerpt.
Chapter 1 2
This document provides an introduction to cryptography and network security. It defines cryptography as the study of secret writing and discusses its use in securing communications and verifying messages. The document outlines basic concepts in cryptography like plaintext, ciphertext, ciphers, keys, encryption, and decryption. It also discusses different types of security, like unconditional security based on information theory versus computational security based on limiting an attacker's resources. The overall document serves as a high-level overview of cryptography and security.
Security.pptx
The document discusses information security and protecting personal information. It defines information security as ensuring the confidentiality, integrity, and availability of information. Confidentiality means only authorized individuals can access information. Integrity means information has not been altered or destroyed. Availability means authorized individuals have access to information when needed without interruption. Security measures help protect against potential harm from others by restricting what others can do. However, security has weaknesses that can be exploited.
Similar to network security, cryptography,steganography (20)
IT Security for the Physical Security Professional
IT Security for the Physical Security Professional
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Topic: Must-Know PostgreSQL Extensions for Developers and DBAs During Migration
Speaker: Deepak Mahto, Founder of DataCloudGaze Consulting
Date & Time: 8th June | 10 AM - 1 PM IST
Venue: Bangalore International Centre, Bangalore
Abstract: Discover how PostgreSQL extensions can be your secret weapon! This talk explores how key extensions enhance database capabilities and streamline the migration process for users moving from other relational databases like Oracle.
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Mydbops Managed Services specializes in taking the pain out of database management while optimizing performance. Since 2015, we have been providing top-notch support and assistance for the top three open-source databases: MySQL, MongoDB, and PostgreSQL.
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Visit: https://www.mydbops.com/
Follow us on LinkedIn: https://in.linkedin.com/company/mydbops
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Monitoring and Managing Anomaly Detection on OpenShift
Overview
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Key Topics Covered
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- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
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Apps Break Data
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Session 1 - Intro to Robotic Process Automation.pdf
👉 Check out our full 'Africa Series - Automation Student Developers (EN)' page to register for the full program:
https://bit.ly/Automation_Student_Kickstart
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UiPath Business Automation Platform
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network security, cryptography,steganography
- 1. Network Security Cryptography & Steganograpy By Nikhil
- 2. A Security History Of The World Goths,vandals,huns Burglar by hacker
- 3. Why do we need security?
- 7. Firewalls
- 13. Types of Secret Writing Secret writing Cryptography Steganography
- 14. Cryptography “ Strategy without tactics is the slowest route to victory. Tactics without strategy is the noise before defeat . ” Sun Tzu
- 15. Cryptography
- 16. example :-
- 19. Steganography
- 23. Conclusion
Editor's Notes
- Alice can send a RESET