Restringir los permisos del sistema para limitar daños

What is the principle of least privilege in cybersecurity?

The principle of least privilege is fundamental in cybersecurity to protect critical information and data. It involves granting users only the permissions necessary to accomplish their tasks, thus minimizing the risk of unauthorized access. This is essential in both business and personal situations. In enterprise environments, it is common for employees to have more permissions than necessary, potentially opening the door to security breaches.

Why is it crucial to limit access in a corporate environment?

• Preventing internal and external attacks: Granting only the necessary permissions helps prevent intentional or accidental attacks from compromised accounts.
• Constant access control: Ensuring that former employees or outsiders do not maintain access to information or systems they should no longer have access to.
• Minimizing human error: It is common for employees to have improper access to data that does not concern them due to mistakes or oversight.

How can granting extra permissions at a personal level affect them?

• Access to personal devices: When you lend your computer without limiting access, other people could see all your private information.
• Sharing links in the cloud: The practice of sharing sensitive documents via public links can give anyone, not just the intended recipients, access to financial information or other critical data.

What are the risks of unrestricted file link sharing?

Sharing a link without restrictions can expose us to multiple threats. Exposure of confidential data due to the use of public links is a common mistake in both individuals and large companies.

What are some examples of security breaches due to link sharing?

• Accidental exposure: A person working in a coffee shop could accidentally share a public link without realizing that anyone who has access to the link can see the information.
• Public sources: Automated tools or scanners actively track links on the Internet, finding them even if they were never intentionally shared, thus revealing confidential corporate data.

How to properly protect information when sharing files?

• Ask for the person's username or e-mail address and grant read-only permission to that specific person.
• Use encryption services and tools to ensure that shared links are protected and monitored.

What other principles can help secure our systems?

In addition to the principle of least privilege, the concept of Zero Trust is increasingly being implemented in modern cybersecurity.

What is Zero Trust and how is it applied?

Zero Trust is an approach where no entity inside or outside the network perimeter is trusted by default. This involves:

• Constant verification: All access to systems and information requires authentication and authorization.
• Continuous monitoring: Constantly review and validate user behavior on the network to identify and mitigate risks.

Teaching and learning to apply these principles is essential to strengthen the security of all the systems we use. Invite others to implement these practices to create a safer and more secure digital environment for all.