Electronic communications contracts are among the modern types of contracts that have gained increasing importance as a result of technological advancement and the widespread use of digital communication tools in various aspects of life. This development has given rise to contractual relationships between telecommunications service providers and subscribers, based on the provision of communication services, data transmission, and access to electronic networks in exchange for mutual financial, technical, and legal obligations. These contracts are governed by the general rules of private law, taking into account their technical nature and the obligations they entail regarding service continuity, quality, the confidentiality of communications, and the protection of personal data. The importance of studying breaches of these obligations lies in determining legal liability and identifying the remedies available to the injured party. A breach of a contractual obligation occurs when one of the contracting parties fails to perform an obligation, delays its performance, or performs it in a manner inconsistent with the agreed terms. Such a breach may take the form of an interruption in telecommunications services, a decline in service quality, failure to provide the agreed-upon speed, a breach of the confidentiality of subscriber data, or failure to inform the subscriber of essential terms relating to the service and its costs. Electronic communications contracts are characterized by their reliance on interconnected networks and technical infrastructure, which makes determining the causes of a breach more complex. The failure may result from negligence on the part of the service provider, a technical malfunction, or an act committed by a third party. It may also arise from the failure to take appropriate measures to protect the network against cyberattacks. Accordingly, determining liability requires an examination of the nature of the obligation, the source of the failure, and the circumstances surrounding it. The principal obligations of the service provider include enabling the subscriber to benefit from the agreed-upon service, providing accurate information regarding its costs and terms, maintaining the confidentiality of communications and data, and complying with the relevant technical and legal requirements. In return, the subscriber is obliged to pay the fees due, provide accurate information, use the service lawfully, and comply with contractual terms that do not conflict with the law. Contractual liability arises when the legally required conditions are satisfied as a result of a breach of an obligation arising from the contract. It is associated with the occurrence of the breach, the existence of damage, and the causal relationship between them, in accordance with the applicable legal rules. The mere occurrence of a technical malfunction is not sufficient to establish liability in every case. Rather, it is necessary to determine the cause of the malfunction, whether it can be attributed to either contracting party, and whether any legally recognized grounds for exemption from liability, such as force majeure, are applicable. The principal legal consequences of a breach include the right to seek specific performance where possible, such as restoring the service or repairing the malfunction. The injured party may also claim compensation when the relevant legal requirements are satisfied and the damage and causal relationship are established. Furthermore, the injured party may be entitled to seek termination of the contract if the breach is sufficiently serious to justify such a remedy under the law. A claim for the recovery of undue payments or a reduction in the financial consideration may also be available where there is a valid legal basis. The protection of subscribers is particularly important because of the technical and economic imbalance between subscribers and telecommunications companies, which often rely on standard-form contracts prepared in advance. Such contracts may contain clauses limiting liability or granting service providers broad powers to modify or terminate services. Therefore, these clauses should be subject to legal scrutiny to ensure their validity and compliance with mandatory legal rules, the principles of good faith, and consumer protection requirements. Proving a breach in electronic communications contracts also raises challenges related to the technical nature of the relevant data, communication logs, electronic invoices, and fault reports. Such evidence is important in determining the duration and cause of a service interruption, as well as the extent of the resulting damage. At the same time, the rules of evidence must be observed, together with the requirements for protecting personal data and maintaining the confidentiality of communications. In conclusion, the breach of contractual obligations in electronic communications contracts constitutes an important subject in private law because of its close connection with civil liability, consumer protection, and digital privacy. Addressing this issue requires achieving a balance between the rights of service providers and subscribers and clearly defining contractual obligations and legal remedies. Such an approach contributes to strengthening trust in electronic transactions and promoting legal stability within the telecommunications sector. Prepared by: Assistant Lecturer Hassanein Alaa Mohammed