The Principle of Least Privilege (PoLP) is a fundamental concept in cyber security, which involves granting users, systems and applications only the minimum access rights necessary to perform their legitimate tasks. In other words, each entity should only have the privileges that are strictly essential to its operation, and nothing more.
Example with users: in a company, an employee in the accounts department does not need access to human resources files, just as a trainee does not need the same authorisations as a manager. In the same way, in IT, each account, each application and each process should have only the strict minimum of rights to function.
Example with systems: in a Linux system, a web server does not need root (administrator) rights, but only specific permissions to read certain files and listen on a network port.
A privilege is a level of authorisation granted to a user, process, account or application, enabling it to access system resources (files, databases, networks) or perform specific actions (install software, modify configurations, manage accounts).
The ISSP (Information Systems Security Policy) is a strategic document that defines the rules and objectives of an organisation in terms of the security of its information systems.
A quarantine is a security measure that consists of isolating a suspect item (infected file or material, phishing e-mail, potentially malicious program or system, etc.) in an area...
Ransomware is a type of malicious software (malware) that takes a user's data hostage by encrypting it. Cybercriminals then demand payment of a ransom to provide the decryption key needed to recover the data.
This type of threat has become one of the main concerns in terms of cyber security, affecting both individuals and businesses.
