Security Fixes on Master are backported to 18.06, so that’s enough to keep things secure there.

With regards to WPA3 - there are performance issues around ath9k and features needed to support WPA3 - 802.11w is mandatory here, and so support that on ath9k, hw-crypto acceleration is disabled, so things can get compute bound, esp. if one is also running items like OpenVPN.

Keep in mind that the AR9531/AR9331 chips are old - they were introduced back to 2006

On your iPad Pro 2020 - comms to your bank, as long as the secure connection is SSL/TLS 1.2, you’re far more secure that any WPA3-Personal connection

All that being said - GL-E750 is fairly secure all told.

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