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Novel attack against virtually all VPN apps neuters their entire purpose
(arstechnica.com)
This is a most excellent place for technology news and articles.
It all depends on how much you trust the devices on your LAN. So your ISP can't do anything unless they own and control your router, since that is on your LAN. So one concern might be if you connect your PC to coffee shop wifi, since all other devices in the shop are on the same LAN, not to mention the coffee shop owns the wifi router and can also perform the attack. Another concern might be if a family member in your house has a device that got hacked, then all devices in your house are vulnerable.