Has my wireless been compromised?

[Ms. Daisy]

pro tip : Generate 63 character passphrases quickly on the fly by doing the following

 cat /dev/urandom | tr -dc _A-Z-a-z-0-9 | head -c63

ooh- good tip!

[Dangertux]

ooh- good tip!

And if you want special characters

/dev/urandom | tr -dc A-Z-a-z-0-9-"'_*(#&@$*)&'" | head -c63

[veroslav]

Hi again!

Thank you so much for such an amount of great tips. I've changed the password to a longer one and implemented other suggestions as well, so now I feel much calmer.

OpSecShellshock's suggestion might be correct though! I connected my PS3 yesterday and monitored the connected devices on my router. One hour after I disconnected the PS3, it was still displaying as connected!

I will keep an eye on this tonight when I am at home and check whether it still shows as connected. If yes, then it was probably it and not a neighbour that kept me from sleeping two nights before

Thank you all again!

Kind Regards,
Veroslav

[OpSecShellshock]

And if you want special characters

/dev/urandom | tr -dc A-Z-a-z-0-9-"'_*(#&@$*)&'" | head -c63

APG works for that as well, but the command isn't nearly as cool:

apg -a 1 -n 1 -m 63 -M SNCL

You can substitute -a 0 or leave the -a option out entirely to get something considered "pronounceable" (it still isn't a word, but it has a sort of phonetic cadence to it, I guess).

[Ms. Daisy]

OpSecShellshock's suggestion might be correct though!

He usually is.

Now I'm going to have to open some new accounts somewhere so I can use all these cool passwords I'm generating! LOL

[dodo3773]

Instead of just looking at the connected ip addresses take note of the mac addresses associated with each device you own. Then when you log into your router or do an nmap scan you can compare them to your existing devices.

[haqking]

Instead of just looking at the connected ip addresses take note of the mac addresses associated with each device you own. Then when you log into your router or do an nmap scan you can compare them to your existing devices.

he did do that

from OP

So yesterday, I logged in on the router wirelessly (used no password for the admin there) and when fiddling with
the wireless configuration, suddenly I saw what appeared to be another client connected to it!
Under the DHCP dynamic clients section (or something like that) connected to router, I saw my own
computer, and another machine I couldn't recognize.

The hardware address of that machine was different from mine, and the IP was same as mine but
one greater (mine was xxx.xxx.xxx.xx0 and the other was like xxx.xxx.xxx.xx1). This machine had no
name.

And as mentioned these are easily spoofed anyways.

Regardless it looks like it was the PS3 hangin around after a poweroff which they do sometimes in routers cache.

Cheers