Review unit 2 tecnology 2 eso
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Our personal attitude and behavior is the best protection when using the internet. When connecting to search for webpages, a user's computer first connects to an internet service provider who assigns an IP address. The user then opens a browser, types a URL, and their request is sent to a DNS server to locate the corresponding server hosting the requested webpage. The server then sends the webpage back to the user's computer in packets which are reassembled and displayed in their browser. Key tools to enhance security include antivirus software, firewalls, strong passwords, and taking care to avoid phishing, cyberbullying or sharing private information. Everything done online contributes to our digital footprint which traces our digital identity over time.
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Tip sheet
All product and company names mentioned herein are for identification and educational purposes only and are the property of, and may be trademarks of, their respective owners.
Internet Safety Techniques
This presentation gives an insight of all possible threats one can encounter while surfing the net, what is meant by each risk and simple yet effective methods to counter those risks and remain protected. The potential risks while using the internet are virus attacks, spyware, phishing, and hacking. The presentation summarizes all of them. Ideal if one is trying to learn the basics of e-safety.
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Cyber security is important to protect sensitive information from unauthorized access. The document discusses why cyber security is important, common cyber security terms, how email clients work, why email attachments can be dangerous, steps to protect yourself and others from email threats, benefits of blind carbon copy (BCC) emails, reducing spam emails, general cyber security tips, and notes that absolute security is impossible to achieve.
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ISDD Security Precautions
Anti-virus software scans files to identify viruses by matching signatures of previously discovered viruses. It offers real-time protection and scheduled scans, and can delete or quarantine infected files. Passwords are commonly used with usernames to authenticate users, and should be at least 8 characters long without including personal details. Biometrics authenticate users using unique biological traits like fingerprints, iris patterns, or facial recognition. Encryption converts data into an unreadable format, while decryption reverses the process, and different encryption methods include symmetric, asymmetric, and digital signatures.
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A hacker gains unauthorized access to computer systems to steal or corrupt data, often for the challenge. Hacking is illegal. To prevent hacking, use complex passwords, update security software, install a firewall and antivirus, and be wary of public WiFi and email attachments. Viruses are programs that infect computers without permission and can delete or corrupt data. They spread through email attachments and downloads. Installing antivirus software and keeping it updated prevents viruses. Worms replicate faster than viruses and use system resources to take over computers. Firewalls, antivirus, and disabling JavaScript help prevent worms. Trojans disguise as legitimate software but install malware for remote access to steal data and monitor users.
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The document discusses various types of online fraud and identity theft, including goods not being delivered after payment, purchases made with stolen credit cards, loan and money transfer scams, and dating or holiday fraud. It also describes identity theft as using someone's personal information to impersonate them, and defines true name fraud and account takeover. The document then provides tips for protecting against online threats like avoiding sharing personal details or responding to suspicious emails, as well as maintaining antivirus software. It goes on to define spyware, keylogging, phishing, and denial of service attacks, explaining how to identify and mitigate these risks.
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Digital security involves protecting electronic devices like computers from viruses, malware, spyware, and hackers. Viruses can copy themselves and infect computers without permission. Malware is designed to damage computers secretly. Spyware monitors browsing and shows unwanted ads. Hackers illegally access systems and cause problems. People can safeguard themselves by using unique, changed passwords and not sharing information. Security software also helps protect digital lives.
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Tip sheet
All product and company names mentioned herein are for identification and educational purposes only and are the property of, and may be trademarks of, their respective owners.
Internet Safety Techniques
This presentation gives an insight of all possible threats one can encounter while surfing the net, what is meant by each risk and simple yet effective methods to counter those risks and remain protected. The potential risks while using the internet are virus attacks, spyware, phishing, and hacking. The presentation summarizes all of them. Ideal if one is trying to learn the basics of e-safety.
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Cyber security is important to protect sensitive information from unauthorized access. The document discusses why cyber security is important, common cyber security terms, how email clients work, why email attachments can be dangerous, steps to protect yourself and others from email threats, benefits of blind carbon copy (BCC) emails, reducing spam emails, general cyber security tips, and notes that absolute security is impossible to achieve.
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ISDD Security Precautions
Anti-virus software scans files to identify viruses by matching signatures of previously discovered viruses. It offers real-time protection and scheduled scans, and can delete or quarantine infected files. Passwords are commonly used with usernames to authenticate users, and should be at least 8 characters long without including personal details. Biometrics authenticate users using unique biological traits like fingerprints, iris patterns, or facial recognition. Encryption converts data into an unreadable format, while decryption reverses the process, and different encryption methods include symmetric, asymmetric, and digital signatures.
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A hacker gains unauthorized access to computer systems to steal or corrupt data, often for the challenge. Hacking is illegal. To prevent hacking, use complex passwords, update security software, install a firewall and antivirus, and be wary of public WiFi and email attachments. Viruses are programs that infect computers without permission and can delete or corrupt data. They spread through email attachments and downloads. Installing antivirus software and keeping it updated prevents viruses. Worms replicate faster than viruses and use system resources to take over computers. Firewalls, antivirus, and disabling JavaScript help prevent worms. Trojans disguise as legitimate software but install malware for remote access to steal data and monitor users.
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The document discusses various types of online fraud and identity theft, including goods not being delivered after payment, purchases made with stolen credit cards, loan and money transfer scams, and dating or holiday fraud. It also describes identity theft as using someone's personal information to impersonate them, and defines true name fraud and account takeover. The document then provides tips for protecting against online threats like avoiding sharing personal details or responding to suspicious emails, as well as maintaining antivirus software. It goes on to define spyware, keylogging, phishing, and denial of service attacks, explaining how to identify and mitigate these risks.
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Along with that we've also includes Security Awareness and Security Policies
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This document discusses internet security issues and provides information on various cyber threats. It begins by defining internet security and noting the increased security risks as more people go online. It then covers the meaning of the internet, the need for internet security, and major security problems like viruses, hackers, malware, Trojan horses, password cracking, and phishing attacks. For each threat, it provides details on what they are and how to prevent them. It concludes by mentioning India's ranking in cyber security and recent news about Facebook data leaks.
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A virus is a computer program that can copy itself and infect a computer without the user's permission or knowledge. There are 5 main types of viruses: macro, boot sector, network, logic bomb, and worm. An antivirus is a security program installed on a computer to protect it from viruses. Popular antivirus software includes K7, Kaspersky, Quickheal, and Avast Norton. A firewall protects a computer when connected to a network. Hackers break into computers to change data without permission, while crackers break in but do not change data. Freeware is free programming offered for download and use. An operating system acts as an interface between the user and computer, with examples including Windows XP, 7, 8,
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Privacy refers to an individual's or group's ability to keep their personal lives and information out of public view and to control how information about them is shared. Examples of privacy include keeping bank account numbers, social lives, and government documents confidential. Computer technologies like cookies, electronic profiles, and spyware can threaten privacy by collecting and sharing users' data without their consent. Privacy needs to be protected through laws, security services, management practices, and utilities like firewalls and anti-virus software.
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The document discusses cyber crimes and how to protect from them. It defines cyber crimes as any crime involving computers and networks, dividing them into those using computers as targets and weapons. It then lists and briefly explains common types of cyber crimes like hacking, denial of service attacks, virus dissemination, computer vandalism, cyber terrorism, and software piracy. The document notes that governments and certain groups are often targets of hackers and viruses can damage data. It provides an example of cyber terrorism and urges using open source software or paying for licensed copies to avoid software piracy. Finally, it states that the next speaker will discuss how to protect from cyber crimes.
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The document discusses various cyber safety topics such as operating systems, viruses, antivirus software, firewalls, hackers, crackers, freeware, phishing, trolling, cyberstalking, cyberbullying, and internet scams. It provides definitions and examples of operating systems like Windows and Linux. It explains that viruses are malicious programs that can copy themselves and infect computers without permission. There are different types of viruses such as macro, boot sector, network, logic bomb, and worm viruses. Antivirus software and firewalls help protect computers from viruses and unauthorized network access. Hackers break into computers to change data while crackers break in but do not change data. Freeware is free software. Phishing involves fake emails
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Cyber security is the body of technologies , processes and practices designed to protect networks , computers , programs and data from attack , damage or unauthorized access . In a computing context , security includes both cyber security and physical security .
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Cybercrime involves using computers or the internet to steal identities or import illegal programs. The first recorded cybercrime took place in 1820, while the first spam email and computer virus occurred in 1976 and 1982, respectively. Cybercriminals may target computers directly through hacking or use computers as weapons to enable real-world crimes like credit card fraud. Common cybercrimes include hacking, denial-of-service attacks, virus distribution, computer vandalism, cyber terrorism, and software piracy. Cyber security aims to protect personal and business information through prevention, detection, and response to online attacks by maintaining updated software, using strong passwords, and being wary of unsolicited requests for private information. As cybercrime evolves
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The document provides information about internet security and safety. It discusses the importance of using antivirus software, backing up files, encrypting external hard drives, using unique passwords for different accounts, setting up a guest WiFi network, using public WiFi cautiously, and using social media cautiously. The document offers these tips to help people stay protected when using digital devices and the internet.
Ethical Hacking
1) Ethical hacking involves legally accessing a network or system with the owner's permission to test security vulnerabilities. It helps find weaknesses that malicious hackers could exploit.
2) The document provides a history of hacking from the 1960s to present day, including early hackers at MIT and incidents involving stolen credit cards and hacked email accounts.
3) It describes ethical hackers as "white hats" who test security with permission, and outlines some common hacking techniques like port scanning, password cracking, and denial of service attacks used to gather information and launch attacks. The document provides safety tips for online privacy and security.
Computer-Security.pptx
This document discusses computer security and various cyber threats. It begins by explaining how computer security became increasingly important with the development of modems and personal computers in the late 20th century. It then discusses different methods used to protect computer systems and information, including serial numbers, locks, alarms, and various security strategies to address threats like data theft, vandalism, fraud, and privacy invasion. The document also provides definitions and examples of cryptography, encryption, malware, and other cyber attacks like phishing, watering hole attacks, and cybercrime. It concludes by listing some common reasons for web threats and tips to protect against web service attacks, such as backups, multi-factor authentication, malware scanning, and keeping software updated.
Cyber Crime
Unit II discusses cyber crime, including the methods and taxonomy of cyber attacks. The cyber world refers to the online environment where people interact through digital media like sharing and consuming content. Cyber crime involves any criminal activity using computers or networks and can be for profit, to damage systems, or use computers to spread illegal materials. Cyber attacks are classified based on the responsible agent as cyber warfare by states, cyber crime by individuals/organizations, or cyber terrorism. Common cyber attacks include injection attacks, DNS spoofing, and denial of service attacks on websites, as well as viruses, worms, and trojans on systems. Reasons for cyber crime include the ease of accessing systems, ability to store data in small spaces, complexity of systems, negligence
Computer security
This chapter discusses various topics relating to computer security, ethics, and privacy. It outlines objectives such as describing types of computer security risks like viruses, worms, Trojan horses, and denial of service attacks. It discusses techniques for safeguarding against unauthorized computer access and use, such as using firewalls, strong passwords, and biometric devices. The chapter also addresses issues involving information accuracy, privacy, and software piracy. Overall, the chapter aims to explain how to protect computers and networks from both internal and external security threats.
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- 1. 1 UNIT 2. Internet. Security and responsability. 1. Unit summary: 1. Internet: is a network of thousands of computers and devices around the world connected by cooper wires, fibre optics, wireless connections and other methods. 2. Browser: a programme that displays the content of web pages. 3. Search engine: is a computer system that indexes files stored on websites. 4. URL: uniform resource locator. The address that identifies a website on the Internet. 5. Server: is a computer with special features, prepared to provide uninterrupted services to lots of useers. 2. Order the stages that go from when I connect to the Internet to search for an address in a browser until the corresponding web page appears: 1. I connect to the Internet if I have got an Internet servide provider (ISP) that assigns an addres to my computer, calle dan IP address. 2. A router lets me connect to the Internet. Once connected, I open my browser and type the address of a page in it (URL). Information starts to travel in the form of packets. 3. DNS servers assign a name to each IP address. 4. My computer communicates with other computers following a common set of rules called a protocol. 5. The DNS server sends the request to the server that hosts the web page we want to visit. 6. Finally, the packets reach our computer and are reassembled. The page is then displayed in our browser. 3. Tell me four tools to protect our personal safety and machine security. 1. Our attiude protects us from identify theft, phising, loss of privacy, damage to our identity or image, ciberbullying,… 2. Antivirus that can protect our computer from attacks by viruses and Trojans. 3. Firewall that displays alerts to ask confirmation for any program that uses the Internet connection. 4. Passwords that can enhance the security of a file, folder, computer, etc.
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