Word of the Week: Blockchain

Word of the Week: Blockchain

Blockchain is a critical part of the bitcoin peer-to-peer payment system. The bitcoin system works using a blockchain ledger to record transactions. Bitcoin is a global cryptocurrency that can be used as a medium of exchange. However, while many parties have started to accept bitcoin as a currency, it is still controversial and poses risks in terms of security and stability. (more…)

Word of the Week: DOS Attack

Word of the Week: DOS Attack

A denial-of-service (DoS) is any type of attack where the attackers (hackers) attempt to prevent legitimate users from accessing the service. In a DoS attack, the attacker usually sends excessive messages asking the network or server to authenticate requests that have invalid return addresses. (more…)

Word of the Week: Mobile Security

Word of the Week: Mobile Security

Mobile security refers to efforts to secure data on mobile devices such as smartphones and tablets. Typically, mobile security is something that enterprises work on to control sensitive information that could be jeopardized because of its use on various mobile devices. As the use of mobile devices has proliferated, securing them has increasingly become an important issue in mobile technology.

– definition from Techopedia

Word of the Week: Malware

Word of the Week: Malware

Malware is software designed to cause harm to a computer and user. Some forms of malware “spy” on user Internet traffic. Examples include spyware and adware. Spyware monitors a user’s location and if enabled, it can capture sensitive information, e.g., credit card numbers, promoting identity theft. Adware also acquires user information, which is shared with advertisers and then integrated with unwanted, triggered pop-up ads.

Worms and viruses behave differently, as they can quickly proliferate and undermine an entire computer system. They also may perform unsavory activities from a user’s computer without the user’s knowledge. In the wake of a virus or worm, a computer system can experience significant damage.

– definition from Techopedia

Word of the Week: Central Processing Unit (CPU)

Word of the Week: Central Processing Unit (CPU)

The central processing unit (CPU) is the unit, which performs most of the processing inside a computer. To control instructions and data flow to and from other parts of the computer, the CPU relies heavily on a chip set, which is a group of microchips located on the motherboard.

The CPU has two typical components:

  • Control Unit: extracts instructions from memory and decodes and executes them.
  • Arithmetic Logic Unit (ALU): handles arithmetic and logical operations.

To function properly, the CPU relies on the system clock, memory, secondary storage, and data and address buses.

This term is also known as a central processor, microprocessor or chip.

– definition from Techopedia

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