Cybersecurity: what is computer security – La Revue Tech

What does cybersecurity mean and how can we defend against increasingly frequent and sophisticated hacker attacks?

We talk about it in this article to explain what cybersecurity means and how to put it into practice both in institutional and corporate contexts, and in national contexts.

Information security or cybersecurity, an increasingly urgent need

Digitalization has revolutionized the way we live, study, work, interact with others, share, buy. Basically everything. Indeed, the more personal data we put online and the more we are connected, the greater the risk of being the victim of cyberattacks.

The perverse effects of this transformation are online crimes, the new dangers to be avoided, which have particularly increased in recent years, since 2020, following the pandemic.

According to some of the data contained in the Clusit 2021 report on global cybersecurity, hacker attacks have increased by 29%, particularly affecting the “health” (12%) and “research/education” (11%) sectors. The year 2021 has seen a surge in digitization processes and, hand in hand, cyberattacks.

It is no coincidence that the news reports more and more cases of cybercrimes which have a very high cost from a legal, financial and reputational point of view.

Not to mention the colossal fines that are incurred when people who surf the net, within a platform where they make their purchases, are exposed to the violation of sensitive data.

It is therefore important that companies, institutions and individuals learn to defend themselves, aware of the vulnerability of their data, their privacy, their reputation and their intellectual property.

What is computer crime

A computer crime is not limited only to an attack by means of the classic virus, or rather malware, and we will soon see which are the most common. The crime can also be the fraud attempt to extort sensitive data or money under cyber threat blackmail or other means of social engineering.

Sooner or later we all receive emails like this:

Your website has been compromised Your site has been hacked.

PLEASE FORWARD THIS EMAIL TO SOMEONE IN YOUR COMPANY WHO IS AUTHORIZED TO MAKE IMPORTANT DECISIONS!

We have hacked into your website and extracted your databases.

Well, this is a deception with the criminal intent to extort money from unsuspecting people who panic, fall for the trap and act on it. It is also a computer crime.

What is cybersecurity and why is it important

Cybersecurity is a set of processes, actions, and tools to protect Internet-connected systems, hardware, software, and sensitive data from digital attacks.

Cybersecurity measures are designed to combat threats to networked applicationsunauthorized access, data integrity and confidentiality.

In practice, it means taking various measures to counter malicious attacks by hackers against people, companies and institutions, damaging the security of systems, networks, programs and devices.

The most insidious cyberattacks to defend against

The goal of cybersecurity is to recognize, block and prevent cyberattacks. But this mission is becoming more and more difficult as hackers use ever more sophisticated means to sneak into the depths of the web.

Then, we must consider the increase in vulnerability due to new technologies as well as the growth of the IoT (Internet of Things), the Cloud, Big Data, all factors that give rise to new attack channels.

Among the main hacker attack techniques, malware is that form of malicious software which includes worms, viruses, Trojan horses, spyware and ransomware. The latter is a type of malware that locks your PC or smartphone using encryption and then requires payment to decrypt and unlock them.

Other cyberattacks are:

  • Backdoors allow remote access
  • Formjacking inserts malicious code into online forms
  • Cryptojacking installs illicit cryptocurrency mining software
  • DDoS (Distributed Denial-of-Service) attacks take server traffic, websites, or other network resources offline through a huge amount of messages and connection requests that slow the system down until he goes haywire
  • Domain Name System (DNS) poisoning attacks compromise DNS to redirect traffic to malicious sites
  • Social engineering: extort sensitive information usually protected by violation of security procedures
  • Phishing: fraudulent technique that uses email addresses simulating reliable sources to steal sensitive data (PIN codes, identifiers, etc.)
  • Advanced Persistent Threats (APT): Targeted attacks in which a hacker manages to steal data after infiltrating a network for a long time.

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Cybersecurity: what is computer security – La Revue Tech


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