This one-pager explains the security and reputational risks associated with offering public Wi-Fi in retail, hospitality, transportation, education, and healthcare environments. It highlights common threats such as phishing, malware distribution, botnets, and inappropriate content, noting that unsecured guest networks can expose both users and brands to harm. The brief describes how DNSFilter protects guest Wi-Fi users by blocking malicious domains and harmful content at the DNS layer before connections are established. Real-world examples show rapid large-scale deployment, including a major U.S. retailer securing thousands of stores in under a month. The document also addresses industry-specific concerns, such as protecting travelers from advanced phishing campaigns and blocking CSAM cont

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