Typosquatting is a social engineering and cybersquatting technique in which attackers register domain names similar to legitimate ones, hoping users will make a typographical error and visit their malicious website instead. Reference: CompTIA Security+ SY0-701 Official Study Guide, Domain 2.2: "Typosquatting involves registering misspelled versions of legitimate domain names to trick users." Exam Objectives 2.2: "Given a scenario, analyze potential indicators associated with application attacks."