Internet
Two types of people thrive in the distant hidden recesses of the Dark Web. One type consists of the good guys: whistleblowers, freedom fighters, journalists, the intelligence community and law enforcement agencies, all generally ...
Security
The United States offered a reward of up to $10 million on Wednesday for a Russian national accused of running a stolen credit card operation.
May 3, 2023
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6
Computer Sciences
According to computational complexity theory, mathematical problems have different levels of difficulty in the context of their solvability. While a classical computer can solve some problems (P) in polynomial time—i.e., ...
Apr 28, 2023
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86
Business
Celebrities and other high-profile Twitter users are once again being verified by the social media platform and they don't know why the blue check marks reappeared—nor do they seem too happy about it.
Apr 24, 2023
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22
Consumer & Gadgets
Facebook earned more than $110 billion last year by selling advertisements targeted at its users, powered by the data Facebook collected from them.
Apr 19, 2023
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11
Security
Australian firm Latitude Financial said Tuesday it refused to pay a ransom to hackers who stole millions of records in one of the country's biggest data heists.
Apr 11, 2023
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12
Computer Sciences
In American writer Mark Twain's autobiography, he quotes—or perhaps misquotes—former British Prime Minister Benjamin Disraeli as saying: "There are three kinds of lies: lies, damned lies, and statistics."
Apr 6, 2023
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7
Computer Sciences
With wearable fitness trackers, car key fobs and smart home devices, the Internet of Things (IoT) has become ubiquitous in our lives. Unfortunately, much of this flow of information is vulnerable to malicious activity and ...
Mar 30, 2023
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137
Security
People reveal more personal information when you ask them the same questions a second time, according to new research from the University of East Anglia.
Mar 27, 2023
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10
Computer Sciences
It's past time the world moves away from text-based passwords and verifications for mobile phones and starts embracing more secure image-based solutions, say computer scientists from the University of Surrey.
Mar 23, 2023
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5
A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers.
Mathematical operations are certain procedures that take one or more numbers as input and produce a number as output. Unary operations take a single input number and produce a single output number. For example, the successor operation adds one to an integer, thus the successor of 4 is 5. Binary operations take two input numbers and produce a single output number. Examples of binary operations include addition, subtraction, multiplication, division, and exponentiation. The study of numerical operations is called arithmetic.
A notational symbol that represents a number is called a numeral. In addition to their use in counting and measuring, numerals are often used for labels (telephone numbers), for ordering (serial numbers), and for codes (e.g., ISBNs).
In common use, the word number can mean the abstract object, the symbol, or the word for the number.
This text uses material from Wikipedia, licensed under CC BY-SA
