A semantic attack is a cybersecurity threat that manipulates the meaning or interpretation of information rather than exploiting technical vulnerabilities or injecting malicious code. Attackers craft messages, documents, or data to deceive users or systems by exploiting ambiguities, context, or language subtleties. This can lead to users making harmful decisions, disclosing sensitive information, or performing unintended actions, even though the underlying systems remain technically uncompromised. Semantic attacks are often used in phishing, social engineering, or misinformation campaigns, where the focus is on exploiting human perception and understanding rather than technical flaws. Defending against semantic attacks requires user awareness, critical thinking, and context-sensitive security measures.