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Segurança informática

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Segurança informática[1], also known as cybersecurity, is a specialized field that involves safeguarding computer[2] systems, networks, and data from digital attacks. These attacks often aim to access, change, or destroy sensitive information, interrupt normal business processes, or exploit system vulnerabilities for malicious purposes. Cybersecurity threats and attacks come in various forms such as malware[3], phishing, and denial-of-service attacks, among others. To combat these threats, security[4] measures such as access control, firewalls, secure coding, and hardware protection are employed. It’s also critical to continuously update these measures, given the evolving nature of cyber threats. The statistics and trends in this field underscore the importance of maintaining robust computer security to prevent potentially costly and damaging breaches.

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1. Segurança informática ( Computer security )
1 Computer security, also known as cybersecurity, is a specialized field that involves safeguarding computer systems, networks, and data from digital attacks. These attacks often aim to access, change, or destroy sensitive information, interrupt normal business processes, or exploit system vulnerabilities for malicious purposes. Cybersecurity threats and attacks come in various forms such as malware, phishing, and denial-of-service attacks, among others. To combat these threats, security measures such as access control, firewalls, secure coding, and hardware protection are employed. It's also critical to continuously update these measures, given the evolving nature of cyber threats. The statistics and trends in this field underscore the importance of maintaining robust computer security to prevent potentially costly and damaging breaches.
2 Computer security, also known as cybersecurity, is a specialized field that involves safeguarding computer systems, networks, and data from digital attacks. These attacks often aim to access, change, or destroy sensitive information, interrupt normal business processes, or exploit system vulnerabilities for malicious purposes. Cybersecurity threats and attacks come in various forms such as malware, phishing, and denial-of-service attacks, among others. To combat these threats, security measures such as access control, firewalls, secure coding, and hardware protection are employed. It's also critical to continuously update these measures, given the evolving nature of cyber threats. The statistics and trends in this field underscore the importance of maintaining robust computer security to prevent potentially costly and damaging breaches.
2. computer. A computer is a sophisticated device that manipulates data or information according to a set of instructions, known as programs. By design, computers can perform a wide range of tasks, from simple arithmetic calculations to complex data processing and analysis. They have evolved over the years, starting from primitive counting tools like abacus to modern digital machines. The heart of a computer is its central processing unit (CPU), which includes an arithmetic logic unit (ALU) for performing mathematical operations and registers for storing data. Computers also have memory units, like ROM and RAM, for storing information. Other components include input/output (I/O) devices that allow interaction with the machine and integrated circuits that enhance the computer's functionality. Key historical innovations, like the invention of the first programmable computer by Charles Babbage and the development of the first automatic electronic digital computer, the Atanasoff-Berry Computer (ABC), have greatly contributed to their evolution. Today, computers power the Internet, linking billions of users worldwide and have become an essential tool in almost every industry.

Segurança informática, cybersecurity, digital security ou information technology security (IT security) is the protection of computer systems e networks from attacks by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware, software, or data, as well as from the disruption or misdirection of the services they provide.

An example of physical security measure: a metal lock on the back of a personal computer to prevent illicit component removal or dongle insertion.

The field is significant due to the expanded reliance on computer systems, o Internet, and wireless network standards such as Bluetooth e Wi-Fi. It is also significant due to the growth of smart devices, including smartphones, televisions, and the various devices that constitute the Internet of things (IoT). Cybersecurity is one of the most significant challenges of the contemporary world, due to both the complexity of information systems and the societies they support. Security is of especially high importance for systems that govern large-scale systems with far-reaching physical effects, such as power distribution, elections, and finance.

While most aspects of computer security involve digital measures such as electronic passwords and encryption, physical security measures such as metal locks are still used to prevent unauthorized tampering.

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