Security
Q: Besides entering my user ID and password, my financial institution makes me verify my identity by entering a personal identification number (PIN) that is sent via text, email or phone call. Even after that, I'm always ...
Oct 19, 2018
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Software
When it comes to security, what you don't know can hurt you.
Sep 28, 2018
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191
Internet
Facebook on Thursday confirmed that advertisers were privy to phone numbers given by members of the social network for enhanced security.
Sep 28, 2018
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254
Robotics
Robots can play an important role in the education of young people but will never fully replace teachers, a new study suggests.
Aug 15, 2018
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34
Security
Some popular apps on your phone may be secretly taking screenshots of your activity and sending them to third parties, according to a new study by a team of Northeastern researchers.
Jul 6, 2018
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Security
Could smartphone motion sensors be used by cybercriminals to record speech? It is a question that many academic and industry researchers are working to answer in order to ward off this kind of malicious use before it happens.
Jun 15, 2018
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31
Computer Sciences
(Tech Xplore)—Lava lamps are well known for mood-enhancing functions in living rooms, after-hours cubicles, or anywhere else where humans prefer to dream while wide awake. For a security company with headquarters in San ...
Security
Researchers at Brigham Young University have learned that most users of popular messaging apps Facebook Messenger, What'sApp and Viber are leaving themselves exposed to fraud or other hacking because they don't know about ...
Aug 10, 2017
0
3
Security
(Tech Xplore)—Here it is July 2017 and security vulnerability stories keep coming in with the word "firmware" as one of the key words. What's up this time?
Security
As long as humans are writing software, there will be coding mistakes for malicious hackers to exploit. A single bug can open the door to attackers deleting files, copying credit card numbers or carrying out political mischief.
Nov 16, 2016
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64
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
