Civil Liability of Digital Platforms for User Harm Digital platforms such as delivery apps, shopping sites, and social media are no longer neutral technical tools. They have become active participants in relationships between people. As their role has grown, so have the harms linked to them: a seller defrauding a buyer, a leak of personal data, the spread of abusive content, or an accident during a ride booked through an app. This raises a central question: when is a platform civilly liable for such harm, and when is it exempt? In most civil law systems, anyone whose fault causes harm to another must compensate for it. A platform's liability therefore arises when three elements are present: fault, damage, and a causal link between them. The nature of that liability depends on the relationship involved. If the harm results from a breach of what the platform promised in its terms of use, the liability is contractual. If it affects someone with no contractual relationship to the platform, such as a person about whom false information is published, the liability is tortious. The most important debate concerns how to characterize the platform: is it merely an intermediary hosting third-party content, or a party involved in providing the service itself? Many legal systems, including those of the European Union and the United States, shield intermediaries from liability for user-generated content as long as they have no knowledge that it is unlawful. Once notified, however, a platform that fails to act promptly to remove it may be held liable. Where a platform plays an active role, for example by setting prices, imposing service standards, or promoting offers, courts tend to treat it as a provider of the service, and it may be held directly liable. This approach has been reflected in cases involving ride-sharing companies and online marketplaces. Some harms are attributable to the platform's own conduct rather than that of others. These include negligence in protecting user data, flaws in its algorithms that injure users, failure to verify the identity of parties, or failure to handle repeated complaints. A platform that profits from its users' activity is expected to exercise a reasonable degree of care and oversight. Terms of use that exclude all liability are usually contracts of adhesion, whose terms the user cannot negotiate. Legislatures and courts therefore scrutinize them closely. Unfair terms are void, a party cannot exclude liability for fraud or gross negligence, and consumer protection rules remain mandatory limits that cannot be contracted away. Claiming compensation also faces practical obstacles: proving fault in a complex technical environment, identifying the responsible party when content is anonymous, and resolving questions of jurisdiction and applicable law, since platforms operate across borders. In many Arab countries, the general rules of civil liability remain the main reference, together with data protection and electronic transactions laws, without a comprehensive regime specific to platforms. This makes judicial interpretation decisive in this area. In conclusion, imposing absolute liability on platforms for everything that occurs on them could stifle innovation and push them toward excessive monitoring, while granting them complete immunity would leave users unprotected. A balanced solution holds a platform liable in proportion to its actual role, its knowledge, and its ability to prevent harm, and requires it to maintain clear mechanisms for reporting, content removal, and data protection. This builds trust between users and platforms without sacrificing freedom to innovate.