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Computer security is a branch of computer technology with the objective of protecting information from unauthorized access, disruption, or modification while maintaining the accessibility and usability of the system for its intended users. Historical cryptography is the art of writing and deciphering secret messages.
Diagram of a CPU memory cache operation. In computing, a cache (/ k æ ʃ / ⓘ KASH) [1] is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere.
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Unsourced material may be challenged and removed. Find sources: "Tonight and the Rest of My Life" – news · newspapers · books · scholar · JSTOR ( January 2013 ) ( Learn how and when to remove this message )
On October 4, 2021, at 15:39 UTC, the social network Facebook and its subsidiaries, Messenger, Instagram, WhatsApp, Mapillary, and Oculus, became globally unavailable for a period of six to seven hours. [1] [2] [3] The outage also prevented anyone trying to use "Log in with Facebook" from accessing third-party sites. [4]
Apple was founded as Apple Computer Company on April 1, 1976, to produce and market Steve Wozniak's Apple I personal computer. The company was incorporated by Wozniak and Steve Jobs in 1977. Its second computer, the Apple II, became a best seller as one of the first mass-produced microcomputers.
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Unsourced material may be challenged and removed. Find sources: "Don't Let's Go to the Dogs Tonight" – news · newspapers · books · scholar · JSTOR ( November 2011 ) ( Learn how and when to remove this message )
Absolutely! It's quick and easy to sign up for a free AOL account. With your AOL account you get features like AOL Mail, news, and weather for free!
Some users may be tracked based on the IP address of the computer requesting the page. The server knows the IP address of the computer running the browser (or the proxy, if any is used) and could theoretically link a user's session to this IP address. However, IP addresses are generally not a reliable way to track a session or identify a user.