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network security presentation

Transcript: Rhys Jordan Network Security Presentation Malware is very dangerous to any user of technology, especially those without the right protection. People will create these malware to receive personal information, steal money or just destroy the technology. This presentation will explain the different types of malware, what is does and how to stop the malware. Introduction Introduction Spyware is unwanted software that infiltrates your computing device, stealing your internet usage data and sensitive information. Spyware is classified as a type of malware — malicious software designed to gain access to or damage your computer, often without your knowledge. Spyware Spyware Solution You can install anti-spyware software on your computer, and the anti-spyware capabilities are included in many anti-virus or anti-malware packages. You can also use a firewall. Solution A computer virus is a program that replicates itself by modifying other programs and creating its own code to mess up your computer Viruses Viruses Solution Computer networks in seven major regional hospitals were locked down for more 24 hours after a widespread computer virus attack shut booking systems, delayed surgeries and reignited fears over patient information security. Solution In computing, a Trojan horse, or Trojan, is any malware which misleads users of its true intent. The term is derived from the Ancient Greek story of the deceptive Trojan Horse that led to the fall of the city of Troy. Trojans Trojans A computer worm is a computer program that replicates itself in order to get to other computers. Often, it uses a computer network to spread itself, relying on security failures on the target computer to access it. Worms Worms In computing, a denial-of-service attack is a cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet. DDOS Attacks DDOS attacks Ransomware is a type of malicious software designed to block access to a computer system until a sum of money is paid. Ransomware Ransomware In conclusion learning about software is an easier way to prevent from malware giving out personal information to another user. Conclusion Conclusion

Network Security Presentation

Transcript: Prepared by: Fajer Al.Mousawi Computer Engineering Student College of Engineering & Petroleum Kuwait University IT & Internet Three Main Topics - Importance of the Information Technology (IT) & the Internet. - But Be Careful (BBC): Types of Computer Threats. - How to protect your computer. Importance of the Internet & IT *A kind of global meeting place where people from all parts of the world can communicate with each other. *The "internet" is a gigantic library, as well as a world-wide message board, telephone network, and publishing medium. *It is open 24 hours a day, and you can find anything you want there; information about almost any subject is available in depth and up to date. Some of the things that you can do via the Internet are: E-mail: send and receive instant electronic messages, which works like writing letters. Your messages are delivered instantly to people anywhere in the world. Access Information: Any kind of information on any topic under the sun is available on the Internet. The ‘search engines’ on the Internet can help you to find data on any subject that you need. Online Shopping: There are many online stores and sites that can be used to look for products as well as buy them using your credit card. You do not need to leave your house and can do all your shopping from the convenience of your home. Downloading Software: download games, music, videos, movies, and a host of other entertainment software from the Internet, most of which are free. Information Technology is related to studying, designing and developing the information related to computers. In business: There are many businesses which are in need of the software packages for satisfying their operational as well as functional needs. Education: helps the students as well as the teachers in studying the course material easily because of fast access. Studying the subjects with the help of online libraries and dictionaries has made grasping and increasing the knowledge easy for the students. Computer Security Threats As Internet and e-mail become an ever-increasing part of our 21st-century lives, the myriad dangers and risks that come with them are increasing too. What is a hacker? The term hacker was once used to describe a clever programmer. Today, it’s applied to those who exploit security vulnerabilities to break into a computer system. You can think of it as electronic burglary. Hackers regularly break into both individual computers and large networks. Once they have access, they may install malicious programs, steal confidential data, or perhaps use compromised computers to distribute spam. Types of hacking and threats Viruses A software virus is a parasitic program written intentionally to alter the way your computer operates without your permission or knowledge. A virus attaches copies of itself to other files such as program files or documents and is inactive until you run an infected program or open an infected document. When activated, a virus may damage or delete files, cause erratic system behavior, display messages or even erase your hard disk. A virus may spread through email and instant messenger attachments, through infected files on floppy disks or CD-ROMs, or by exploiting a security flaw in Microsoft Windows. Macro Viruses Macro viruses are malicious macro programs that are designed to replicate themselves from file to file and can cause damage to the files on your computer. They spread whenever you open an infected file. Macros can be written in documents created by Microsoft Word, in spreadsheets created by Microsoft Excel and in many other kinds of documents. Trojan Horses Trojan horses are programs that appear to serve some useful purpose or provide entertainment, which encourages you to run them. But these programs also serve a covert purpose, which may be to damage files, to place a virus on your computer or to allow a hacker to gain access to your machine. More commonly these days, you can be enticed into running a Trojan by clicking a link on a viral web site or in an email. Worms Worms are programs that replicate and spread, often opening a back door to allow hackers to gain access to the computers that they infect. Worms can spread over the Internet by exploiting security flaws in the software of computers that are connected to the Internet. Worms can also spread by copying themselves from disk to disk or by email. Zombies A Zombie is a dormant program that lies inactive on a computer. It can be activated remotely to aid a collective attack on another computer. Zombies don’t normally damage the computer on which they reside but can damage other computers. Zombies often arrive as email attachments and when the attachment is opened they install themselves secretly and then wait to be activated. Phishing A Phishing attack is when you are sent an email that asks you to click on a link and re-enter your bank or credit card details. These emails can pretend to be from banks, Internet service providers,

Free Presentation Template

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Network security presentation

Transcript: It is difficult to predict as it needs a lot of work Speed is most particular problem to keep up to pace for security devices Another challenge security faces is ubiquity; even other devices will need security implemented like automobiles, cell phones, digital assistants and refrigerators. Joshi et al. [JOS01] states there are seven different models that could be used for access control in network applications What is a network? network consists of the combination of more than one system in place. If one system fails it does not block users to continue. If this occurs, computing tasks are shifted to another system to continue tasks at hand. Increased reliability What is a network Advantages of computing networks Types of threats Security controls Future of security Network Threats Anonymity- when attacker is not in direct contact of the system and attacks from far locations. Many points of attack- file is stored in a network which is remote from user. The file then passes through other hosts to be received by the user. Sharing- more easier approach when attacking networks. they enable their resources making more users to have the access not just on single computers but to the networked system. complexity of the system unknown perimeter unknown path- sending a file may not be received through traveling to many hosts and attacker gains access Advantages of networks Most important tool used in network security –Encryption can be used to secure an entire network –Or to secure a specific communication difficult for anyone to alter data encrypted unless breaking through encryption but takes long process to figure Type of encryption – Link encryption: protection between two hosts – End-to-end encryption: between two applications By Jason Patto 17766526 Outline of presentation Leads to reducing maintenance + storage cost by gaining improved access to all users Purchasing device individually may be expensive but to share the resources can be worth the purchase References Example of future network security Strong authentication Access control lists are implemented through routers –deny any access of any hosts which are being spammed with packets. Routers are configured and could remove all packets within that specific host. Routers observed as good point for access control through handling packets that are received and sent out within a subnetwork. Firewalls better approach with large-scale + general traffic screening than routers. Future of network security Distributing workload Types of networks Daya, B, n.d., network security: history, importance, and future, University of Florida Department of Electrical and Computer Engineering, viewed 04 October 2014, <http://web.mit.edu/~bdaya/www/Network%20Security.pdf>. Pfleeger, C, and Pfleeger, S, Security in computing, 3rd edn Sharing Addition of new nodes and not having to involve the manager to undertake special actions. Expandability Encryption Connection of two or more devices over a medium through use of hardware and software which communication gets enabled. Encryption Strong authentication Access controls Wireless security Controls of security Network Security The amount of usage within single system varies through amount of users that join but also leave a network. Shifting the workload that is within a heavily loaded system to a underutilized one can benefit the network. Access controls Most difficult to keep secure One-Time Password – Protect against replay attacks – Session Token: valid for only one login session – Challenge-Response System Authentication in Distributed System

Network Security Presentation

Transcript: IT2774 Network Security The Informers Our Group Team Members Team Members About Mirai What is Mirai Botnet? How Mirai started? How Mirai started? The Mirai botnet was first found in August 2016 It is determined that the attack was the work of “script kiddies” (amateurs) that mingle on so-called Hack Forums A member of a hacker forum called Anna-senpai’ leaked the source code for Mirai Mirai is now an open-source script which can be found online How does Mirai infect IoT? How does Mirai infect IoT? Mirai propagates by bruteforcing telnet servers with a list of 62 horribly insecure default passwords, starting with the infamous admin:admin. Mirai will attempt to kill and block anything running on ports 22, 23, and 80, essentially locking out the user from their own device and preventing infection by other malware History Vunerability Today Expanded First major product Established Testimonials Testimonials Products & services Products & services

Network Security Presentation

Transcript: Productivity improves. Network configuration and reconfiguration is easier. Faster. Less expensive. Ease of integration with other networks and network components. Network Injection Network Security Presentation By Salman Khalid (12) Morning Min-kyu Choi Rosslin John Robles Chang-hwa Hong Tai-hoon Kim School of Multimedia, Hannam University, Daejeon, Korea A Denial-of-Service attack occurs when an attacker continually bombards a targeted AP or network with bogus requests, premature successful connection messages, failure messages, and/or other commands. These cause legitimate users to not be able to get on the network and may even cause the network to crash. Wireless Network Attack Counter measure to DoS Malicious Association Advantages Of Wireless Communication Wireless Network Attacks Denial Of Services Attackers log into a computer which is set up as a soft AP. Once this is done, the hacker connects to a real access point through another wireless card offering a steady flow of traffic through the transparent hacking computer to the real network. The hacker can then sniff the traffic. The wireless networks consist of four basic components: Radio frequencies Access points Client devices (laptops, PDAs, etc.) Users. Each of these components provides an avenue for attack... Accidental association Accidental association Malicious association Ad-hoc networks Non-traditional networks Identity theft (MAC spoofing) Man-in-the-middle attacks Denial of service Network injection Caffe Latte attack When a user turns on a computer and it latches on to a wireless access point from a neighboring company’s overlapping network, the user may not even know that this has occurred. However, it is a security breach in that proprietary company information is exposed and now there could exist a link from one company to the other. Signal-Hiding Techniques Communications "through air" (radio frequencies) risk of interception is greater than wired networks. Loss Of Confidentiality Loss Of Integrity, Not maintaining availability of the information and information systems. Unauthorized accesspoints. Broadcasted SSIDs. Spoofed MAC addresses. Ad-hoc Network The cracker injects bogus networking re-configuration commands that affect routers, switches, and intelligent hubs. A whole network can be brought down in this manner and require rebooting or even reprogramming of all intelligent networking devices. Wireless Network Attacks Non-traditional networks such as personal network Bluetooth devices are not safe. These nontraditional networks can be easily overlooked by IT personnel who have narrowly focused on laptops and access points. Disadvantage of Wireless Networking Most wireless systems allow some kind of MAC filtering to only allow authorized computers with specific MAC IDs to gain access and utilize the network. Wireless Network Attacks Components Of Wirelesss Network Non Traditional Networks Encryption techniques Wireless Network Attacks Securing Wireless Transmissions Wireless Network Attack Research Paper Vulnerabilities, Threats and Countermeasures (2008) BY Wireless Network Attacks “Malicious associations” are when wireless devices can be actively made by crackers to connect to a company network through their cracking laptop instead of a company access point (AP). These types of laptops are known as “soft APs” and are created when a cracker runs some software that makes his/her wireless network card look like a legitimate access point. Once the cracker has gained access, he/she can steal passwords, launch attacks on the wired network, or plant trojans. Man-in-the-middle attacks Identity theft Make it difficult to locate and intercept the wireless signals. Use of encryption to preserve confidentiality Ensure secure APs Turn off identifier broadcasting Change the identifier on your router from the default Change your router’s pre-set password for administration Allow only specific computers to access your wireless network Ad-hoc networks can pose a security threat. Ad-hoc networks are defined as peer-to-peer networks between wireless computers that do not have an access point in between them. While these types of networks usually have little protection, encryption methods can be used to provide security. Wireless Network Attack Wireless Network Security THANKS

network security prezi presentation

Transcript: Types of malware by Matthew Envy Thank You! What is spyware? Spyware is a virus unwanted software on the computer device, stealing your data, bank account, password, address, folders, secrets. Solutions Spyware is often installed on your computer when you download free software. So you should carefully read the license agreement for any software you download from the internet. What you should look for is a paragraph saying that your PII(Personally Identifiable Information) WILL NOT be shared with third parties. Spyware removal is a key component in internet security, and the removal software is referred to as ‘antispyware’. Good antispyware software - which is what you get with BullGuard’s Internet Security suite - will: • Keep your data personal • Ensure that your online identity is protected • Locate and remove all known spyware and adware • Clean files, registry keys and cookies Current Example CoolWebSearch – This program would take advantage of the security vulnerabilities in Internet Explorer to hijack the browser, change the settings, and send browsing data to its author. Gator – Usually bundled with file-sharing software like Kazaa, this program would monitor the victim’s web surfing habits and use the information to serve them with better-targeted ads. Internet Optimizer – Particularly popular in the dial-up days, this program promised to help increase internet speeds. Instead, it would replace all error and login pages with advertisements. TIBS Dialer – This was a modem hijacker that would disconnect the victim’s computer from a local phone line and connect them to a toll number designed for accessing pornographic sites. Zlob – Also known as Zlob Trojan, this program uses vulnerabilities in the ActiveX codec to download itself to a computer and record search and browsing histories, as well as keystrokes. Spyware Spyware What are viruses They are designed to infect your programs and files, alter the way your computer operates or stop it from working altogether. Solutions Start your computer in safe mode and run an anti-virus scan of your entire computer. examplesRefer to your computer software supplier’s customer support team to see if they offer any tools or resources to extract the virus from your computer. Be sure to delete all of your temporary files in safe mode. Use Malware software to scan for additional threats to your computer and security. Current Examples In June 2014, Operation Tovar took down Evgeniy Bogachev, the leader of the gang of hackers behind CryptoLocker. In February, the FBI offered a cool $3 million reward for Bogachev. Cost of the malware: With 500,000 victims, CryptoLocker made upwards of $30 million in 100 days. Ransomware works much like that, except your computer is taken hostage by a faceless bad guy. Viruses Viruses What are trojans A Trojan horse or Trojan is a type of malware that is often disguised as legitimate software. Trojans can be employed by cyber- thieves and hackers trying to gain access to users' systems. Solutions Never download or install software from a source you don’t trust completely Never open an attachment or run a program sent to you in an email from someone you don’t know. Keep all software on your computer up to date with the latest patches Make sure a Trojan antivirus is installed and running on your computer Current examples Zeus - Also known as Zbot, Zeus is a successful Trojan malware package with many variants used to carry out a number of different types of attack. It’s perhaps most well-known for its successful hack of the U.S. Department of Transportation. Trojan Trojan Picture What are worms A computer worm is a type of malicious software program whose primary function is to infect other computers while remaining active on infected systems. A computer worm is self-replicating malware that duplicates itself to spread to uninfected computers. Solutions Users should practice good cybersecurity hygiene to protect themselves against being infected with computer worms. Measures that will help prevent the threat of computer worm infections include: Keeping up to date with operating systems and all other software patches and updates will help reduce the risk due to newly discovered vulnerabilities. Using firewalls will help reduce access to systems by malicious software. Using antivirus software will help prevent malicious software from running. Being careful not to click on attachments or links in email or other messaging applications that may expose systems to malicious software. Current examples One of the most damaging computer worms ever was the ILOVEYOU virus, malware that was propagated through several vectors, including email attachments that appeared to be text files, scripts run in IM chat sessions, and copies of the virus in executables renamed with the names of common system files. Worms Worms What are DDos attack are Imagine a mob of shoppers on Black Friday trying to enter a store through a revolving door, but a group of hooligans

Comprehensive Network Security Presentation

Transcript: Routing Tables and Forwarding Decisions Routing tables store information about network paths, and routers use them to make decisions on how to forward packets. These decisions are based on factors like network congestion, shortest path, and routing protocols. Security in Wireless Networks Types of Wireless Networks Wireless Standards: 802.11 Wireless networks face security challenges such as unauthorized access and data interception. Implementing encryption, strong authentication methods, and access controls is imperative to safeguard sensitive information over wireless connections. The 802.11 standard, commonly known as Wi-Fi, governs wireless networking protocols, ensuring compatibility and performance across devices. Understanding this standard is crucial for seamless wireless communication in various environments. Wireless networks come in various forms, including Wi-Fi for local connectivity and cellular networks for wide-reaching communication. Each type serves unique purposes and caters to different user needs in the digital age. Introduction to Routers Types of Routing Wireless Network Basics Routers are networking devices that connect multiple networks together and forward data packets between them. They operate at the network layer of the OSI model, making decisions based on IP addresses. Wireless networks use radio waves to transmit data between devices, providing convenient communication. Understanding the fundamentals of wireless technology is essential for efficient network operations. Routing can be classified as static or dynamic. Static routing requires manual configuration of routes, while dynamic routing protocols allow routers to exchange routing information and adapt to network changes automatically. Understanding Wireless Networks Endpoint Demo Endpoint Overview Demonstrate installing and configuring endpoint security software, conducting security scans, and monitoring endpoints for vulnerabilities. Showcase real-time examples of endpoint security measures to enhance network security and safeguard sensitive information. Endpoints refer to devices connecting to a network, including computers, mobile devices, and IoT devices. Understanding endpoint security is crucial to protect against cyber threats and ensure data confidentiality and integrity. Wireless networks enable flexible connectivity without physical cables, revolutionizing communication. Let's delve into the fundamentals of wireless technology and its significance in modern networks. Routing Protocols Firewall Demo Popular routing protocols like RIP, OSPF, and BGP are used to exchange routing information between routers and determine the best paths for data transmission. Each protocol has its own rules for route selection and network management. Understanding Firewalls in Network Security In a live demonstration, configure firewall settings, set up rules to filter traffic, and simulate attacks to showcase how firewalls prevent unauthorized access and protect the network from threats. Understanding Routers in Networking Firewall Overview Firewalls play a crucial role in network security by filtering incoming and outgoing traffic, enforcing security policies, and protecting against unauthorized access. Firewalls act as a barrier between trusted internal networks and untrusted external networks, inspecting packets and determining whether to allow or block them based on predetermined security rules. Routers play a vital role in directing data packets between networks, making routing decisions based on destination addresses. They are crucial for interconnecting different networks and ensuring efficient data transmission. Exploring Network Switching Basics of Network Switches Understanding the fundamentals of network switches is crucial for efficient data transmission and network management. Network switches are crucial devices that connect multiple devices within a network, facilitating data exchange through packet switching. Types of Switches Managed switches provide advanced features like VLAN and QoS, while unmanaged switches simply allow devices to communicate within the same network without configuration options. Virtual LANs (VLANs) divide a single physical network into multiple logical networks, enhancing security, performance, and management flexibility. Switching Protocols Data Packet Forwarding Switches use MAC addresses to forward data packets within a network, ensuring efficient communication between devices and reducing network congestion. Comprehensive Network Security Overview Importance of Practical Network Labs Understanding Network Fundamentals, Switching, Routing, Wireless, Labs, Firewalls, and Endpoints Network Components Networks consist of essential components like hosts (computers), devices (routers, switches), and media (cables, wireless signals) that work together to enable communication and data transfer. Network Topologies Types of Networks Network topologies define the layout of interconnected devices and

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