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How to Secure macOS When Using Public Wi-Fi

Issue Description 

Public Wi-Fi exposes Macs to interception, fake hotspots, and data theft. 

Common Causes 

  • Unencrypted networks 
  • Auto-connect enabled 
  • Sharing services left on 

Step-by-Step Solution 

Step 1: Set Network to Public Behavior 

  • Disable File SharingAirDrop, and Bluetooth Sharing 

 

Step 2: Use a Trusted VPN 

  • Connect VPN before opening browsers or apps 

 

Step 3: Disable Auto-Join 

  • System Settings → Wi-Fi 
  • Turn OFF Auto-Join for open networks 

 

Step 4: Log Out of Sensitive Accounts 

  • Avoid banking and Apple ID access on public Wi-Fi 

Explore Further 

  • Use personal hotspot instead 

Prevention & Best Practices 

Public Wi-Fi is never truly secure.