A hosts file maps hostnames to IP addresses, which organizations sometimes need to edit to block some websites or malicious activities overall. All operating systems utilize hosts files, which are simple text files that connect domain names with IP addresses before they go to the domain name servers. When a user enters a URL in the web browser, the browser checks the hosts file to see whether it finds the requested domain name, and then it searches for a DNS server. Furthermore, the hosts file provides robust protection for user data because it can prevent malicious activities. However, hackers can still use the hosts file as a target.
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