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Attackers usually use a common misspelling technique where they misspell a domain name to trick users into visiting. These obfuscated URLs can be a cause of malware entering a user’s computer system.
URL obfuscation is used together with spamming, redirecting users using a misleading URL that leads to a malicious site. URLs are strings of text that identify web resources such as websites or any kind of Internet server, so an obfuscated URL shows up as a meaningless query string to users.
This hides the real address of the linked site when the user hovers over the link. URL obfuscation is not always used for phishing or cross-site scripting, but it is also used by legitimate websites to hide the true URLs of certain pages so that they cannot be accessed directly by the users or allow certain procedures to be bypassed. It is also used as an anti-hacking procedure. This is termed as security through obscurity.