I've been having issues with my home WiFi lately. I couldn't reconnect because the password seemed incorrect, even though it was the same one given to us by our ISP. A few days before that, my family and I experienced really slow internet speeds, so bad that we had to rely on mobile data for a while. I eventually factory reset the router, and now everything is back to normal. I'm wondering if I should contact my ISP, and I definitely want to change the password from the default one. Are my devices and accounts secure, or could they be compromised? What about the files we downloaded recently—are they safe?
4 Answers
Honestly, just change the password. It could be that your neighbor saw you enter the password while visiting. Just be cautious about who you invite over now.
Definitely change both the WiFi and router admin passwords! It's likely if someone got in using the default password, you don't want to risk them getting access again. As for the files you've downloaded, they should be fine unless you notice anything weird. Sometimes a reset is just what the router needs, too, and it could have been a glitch.
Why contact your ISP? You manage your own WiFi at home. If you're using their equipment and there's a bigger issue, sure, but this sounds like something you can fix on your own!
What model router are you using? Some routers have known vulnerabilities. If that's the case, just changing the password might not solve the problem entirely. Make sure to check if there have been recent patches or updates available for your router model.

Yeah, but just make sure that website you use for the admin settings isn’t still unencrypted. If it’s not using HTTPS, there’s a chance someone could see the changes you're making. Also, when you change the password, all connected devices will be kicked off, and you'll have to reconnect them with the new pass. For checking if there was a man-in-the-middle attack, look for any strange logins or activity on your accounts.