I woke up to a weird notification on my phone saying, 'Suspicious Activity has been detected on the current Wi-Fi network, Disconnecting from the network is recommended.' The message vanished pretty quickly, and when I turned my Wi-Fi off and on, it didn't come back. I've never seen such a notification before, and as someone who tends to worry a lot, I'm really anxious about it. What should I do? Is this something I need to be concerned about?
4 Answers
It depends on the network you're using. Is it your personal Wi-Fi, a public network, or something else? Sometimes, these notifications pop up if suspicious data is detected passing through the router, particularly if multiple devices are connected.
This alert can trigger when something on the network tries to spoof the router's MAC address, which can happen with cheap Wi-Fi repeaters as well. Keep an eye on your devices to ensure everything's safe.
This notification could be tied to Android's feature for detecting suspicious networks, especially if you're using a Samsung device. It’s not documented well but basically warns you if it senses something odd with the network. It might be caused by network name conflicts or unusual MAC address changes. Connecting via an ethernet cable to your router and checking for any unknown devices can help. Also, try scanning for duplicate networks—is yours the only one showing? If you find others, it might be wise to rename yours temporarily.
I checked, and it was definitely a system notification from the device care app. There aren’t any unknown devices connected, and my Wi-Fi name doesn't have duplicates. Does that mean I'm in the clear, or should I still change my Wi-Fi password just in case?
It's worth figuring out which app sent that notification. It might just be a precaution your device is taking, rather than a sign of real danger. If it's from the built-in device care app, you may just need to stay vigilant.
I'm pretty sure it was from that device care app. Should I be worried about possible threats or is this just a routine warning?

I have my own private router with my roommate, and he was logged in before I woke up. Could that have triggered the alert?