Across
- 4. An encryption method in which hashes are used to verify the integrity of transmitted messages. Also known as one-way encryption.
- 5. Programming code that provides a temporary solution to a known problem, or bug.
- 6. The process of converting encrypted data back to its original form.
- 7. An encryption method in which the same key is used to encrypt and decrypt a message. Also known as private-key encryption.
- 9. An encryption method in which two keys (a private key and a public key) are used to encrypt and decrypt a message. Also known as public-key encryption.
- 10. A password-protected, encrypted data file containing message encryption, user identification and message text. Used to authenticate a program or a sender's public key, or to initiate SSL sessions. Must be signed by a certificate authority (CA) to be valid.
- 13. A subset of Internet Protocol that is most often used to determine whether a computer can communicate with the rest of the network.
- 19. A security barrier that controls the flow of information between the Internet and a private network. A firewall prevents outsiders from accessing an enterprise's internal network, which accesses the Internet indirectly through a proxy server.
- 21. A self-replicating program or algorithm that consumes system resources.
- 23. A protocol that provides authentication and encryption, used by most servers for secure exchanges over the Internet. Superseded by Transport Layer Security (TLS).
Down
- 1. A security technique designed to prevent access to information by converting it into a scrambled (unreadable) form of text.
- 2. A protocol based on SSL 3.0 that provides authentication and encryption, used by most servers for secure exchanges over the Internet.
- 3. A malicious program that replicates itself on computer systems, usually through executable software, and causes irreparable system damage.
- 6. An electronic stamp added to a message that uniquely identifies its source and verifies its contents at the time of the signature.
- 8. A number generated by an algorithm from a text string. Also known as a message digest.
- 11. Software that scans disks and programs for known viruses and eliminates them.
- 12. A program disguised as a harmless application that actually produces harmful results.
- 13. An application that installs hidden services on systems. Illicit servers consist of "client" code and "server" code that enable the attacker to monitor and control the operation of the computer infected with the server code.
- 14. An argument that asks "Do people have the right to remove damaging information about themselves on the Internet so the information can be forgotten?"
- 15. The security principle of providing proof that a transaction occurred between identified parties. Repudiation occurs when a party in a transaction denies that the transaction took place.
- 16. The unethical practice of registering domain names very similar to those of high-volume sites in hopes of receiving traffic from users seeking the high-volume site who mistakenly enter an incorrect URL in their browsers.
- 17. software designed to harm computer systems.
- 18. The process of verifying the identity of a user who logs on to a system, or the integrity of transmitted data.
- 20. A graphic or moving image that appears on your screen when your computer is idle.
- 22. A file or collection of tools that resolves system liabilities and improves software performance.