Fundamentals

Right to Privacy: What It Is, What It Protects, and How It Differs from Intimacy

By Daniel Sardá · Published on June 12, 2026

7 min read1,480 words

The right to privacy protects a personal sphere from arbitrary interference and makes it possible to live, communicate, and decide with autonomy.

The right to privacy protects a personal sphere of life from arbitrary or unlawful intrusion. It allows people to keep some matters private, communicate without undue surveillance, and decide who may know, observe, or use certain information about them.

It does not mean hiding everything, and it does not grant immunity from any legitimate investigation. Its function is different: to prevent authorities, companies, or other people from entering another person’s life without sufficient reason, without clear limits, or without the proper safeguards.

Privacy matters even when someone has “nothing to hide.” Choosing what to share, with whom, and in what context is part of personal autonomy. A conversation may be harmless and still not be intended for public view; a home may contain no secret and still remain a protected space.

Key idea: Privacy is not absolute secrecy. It is the protection of a personal sphere against unjustified interference.

What the right to privacy protects

Privacy covers more than the data stored on a phone. The main international instruments connect it with private and family life, the home, and communications. It also overlaps with the protection of honor and reputation, although those are distinct interests.

In everyday terms, the right may be affected when someone intercepts private messages, installs invasive surveillance in a home, retains personal profiles without sufficient safeguards, or discloses confidential information without justification. The common problem is the unjustified loss of control over a sphere that, in principle, belongs to the person.

This protection applies both to state interference and to private actors. An authority may invade privacy through arbitrary surveillance; a company may do so through disproportionate data collection; and a private individual may do so by recording, observing, or disclosing private aspects without authorization or a legitimate cause.

That does not mean every inconvenience is a rights violation. The concrete assessment depends on context and on the applicable legal framework. Relevant factors include the reasonable expectation of privacy, how the information was obtained, the purpose pursued, the scope of the intrusion, and the safeguards available.

Privacy and intimacy: close, but not always identical

In ordinary language, privacy and intimacy are often used as synonyms. Some legal systems and doctrinal traditions also overlap them. For that reason, there is no universal distinction that works the same way in every country.

As a useful distinction, intimacy usually refers to the most reserved core of a person: affections, health, sexuality, deep convictions, or family experiences. Privacy can be understood more broadly and include spaces, choices, movements, communications, and information that a person wants to keep out of observation or indiscriminate access.

For example, a conversation about a medical issue clearly belongs to intimacy. A detailed record of everywhere a person goes may not, by itself, reveal a deeply private secret, but its continuous collection can still seriously affect privacy.

The distinction is useful for greater precision, not for imposing rigid compartments. The same conduct may affect both spheres, and the legal terminology used in each jurisdiction may vary.

How it differs from honor and data protection

Privacy is also often confused with honor and personal data protection. These concepts are related, but each answers a different question.

The right to honor protects a person’s standing and reputation. Privacy, by contrast, is mainly concerned with who may enter, observe, record, or disclose aspects of someone’s personal sphere. Publishing a false and degrading statement may harm honor. Revealing a true but reserved fact without justification may affect privacy even if it is not false.

Personal data protection sets specific safeguards over the collection, use, storage, correction, and other forms of processing of information linked to individuals. It is a central tool for protecting privacy in the digital age, but it does not exhaust it.

A camera pointed into the interior of a home can invade privacy even if the case is not reducible to the processing of a database. Conversely, an organization may violate a technical data rule without causing exactly the same kind of intrusion as an intercepted message.

The Charter of Fundamental Rights of the European Union offers a clear example of this relationship: it separately recognizes respect for private and family life and the protection of personal data. That separation belongs to a specific regional framework, but it helps show that the two areas overlap without being identical.

Useful distinction: Privacy is the broader good that protects a personal sphere; data protection regulates the processing of personal information in a specific way.

General legal basis

The international recognition of the right has a settled formulation. Article 12 of the Universal Declaration of Human Rights protects against arbitrary interference with private life, family, home, or correspondence, and against attacks on honor and reputation.

Article 17 of the International Covenant on Civil and Political Rights protects against arbitrary or unlawful interference in those areas and requires legal protection against it. Unlike the Universal Declaration, the Covenant is a treaty, although its concrete application depends on the obligations each state has assumed and on its legal system.

The word arbitrary is decisive. According to General Comment No. 16 of the UN Human Rights Committee, it is not enough for an interference to be set out in a law: it must also fit the purposes of the Covenant and be reasonable in the particular circumstances.

Privacy is therefore not absolute, but its limits cannot be left to the unrestricted will of whoever holds power. Legitimate restrictions require a valid legal basis, a justifiable purpose, and safeguards against abuse. This requirement connects privacy to the rule of law: authority must act under rules and remain accountable for how it intervenes in people’s lives.

Privacy in the digital environment

Technology did not create the right to privacy, but it multiplied the ways of affecting it. A single everyday activity can leave records about location, contacts, searches, purchases, habits, and preferences. When combined, seemingly minor data points can reveal a detailed picture of a person’s life.

The digital environment also makes the boundaries of consent less intuitive. Sharing a photo with a small group does not amount to authorizing public distribution. Providing information to receive a service does not necessarily mean accepting any later use. And taking part in a social network does not eliminate every expectation of privacy.

Communications deserve special attention. The content of a message is private, but the associated data can also be revealing: who spoke to whom, when, from where, and how often. General Comment No. 16 notes that correspondence should be protected against interception and that the collection and retention of personal information must be regulated by law.

The technical ability to observe or store information does not by itself answer the legal or ethical question. The fact that an institution can collect information does not mean it should do so without limits. Purpose, necessity, proportionality, retention period, access, and oversight all matter.

Warning: Voluntarily sharing some information does not authorize any later collection, retention, combination, or disclosure.

What its limits are

The right to privacy admits limits. Criminal investigations, the protection of others’ rights, or certain public interests may justify some interferences. There may also be a legitimate interest in disclosing information on matters of public relevance.

But invoking security, efficiency, or public curiosity does not remove the duty to justify the intrusion. The more invasive a measure is, the stronger the requirement for clear rules, necessity, limited scope, and oversight. General and indefinite surveillance does not become reasonable simply because it may be useful.

Privacy should not be used as an automatic excuse to hide harms caused to third parties. The challenge is to avoid two extremes: treating privacy as an absolute barrier to every intervention, or reducing it to a revocable concession held by whoever has more power.

Why privacy sustains freedom

Privacy creates the space needed to think, talk, associate, and develop a life of one’s own without permanent observation. It protects personal choices, but it also makes possible the diversity of ideas and relationships that characterizes an open society.

Without a reserved sphere, freedom may exist on paper and weaken in practice. A person who knows they are constantly watched tends to measure every search, conversation, or connection against how others may react. That is why privacy does not benefit only people who keep secrets: it limits the power of others and allows each person to retain an area of autonomy.

Defending it requires balance, not absolutism. Recognizing legitimate limits is compatible with demanding that every intrusion have a basis, a defined scope, and effective controls. That is the difference between an exceptional intervention governed by law and a personal life available to anyone with the means to observe it.