WPA

WPA (Wi‑Fi Protected Access) is a family of wireless security protocols that replaced WEP and later evolved into WPA2 and WPA3. It specifies how data between a wireless client and an access point is encrypted and authenticated, with modes such as PSK (pre‑shared key) and Enterprise (EAP) for stronger authentication. For Audio/Video, Maker and Web students, WPA matters because it affects confidentiality and integrity of network traffic, can influence performance (latency, packet loss) during streaming, and determines implementation and credential-handling choices for embedded devices and web services communicating over Wi‑Fi.

Audio/Video: when doing a live stream at a venue you should ensure the venue Wi‑Fi uses WPA2‑Enterprise or WPA3 to prevent unauthorized listeners and packet sniffing, since weak Wi‑Fi security can cause streams to be intercepted or disrupted. Maker: an ESP32 board publishing sensor data over Wi‑Fi must properly handle WPA credentials (e.g., secure storage, using wpa_supplicant or the native Wi‑Fi stack) and, where possible, use Enterprise or WPA3 to avoid device takeover. Web: when developing or testing a web app on a local Wi‑Fi network, be aware of potential MITM risks on poorly secured WPA networks—always use TLS for web traffic and consider VPN or WPA3/Enterprise on public networks to protect API calls and authentication tokens.