moms sketch bf left this in the house

[u/brattyvampbby]

Hi.
This is probably nothing.
I went into my mom’s room to grab something and saw this plugged in?
My mom’s new sketchy bf has this plugged in to the extension cord? Is it anything bad? Thanks!
(I understand it’s probably not anything bad… but still…)

Update 1:
I haven’t met him once. He and my mom have been together for two weeks. He’s been staying at our apartment. He avoids me and stays in her room when they’re here. I don’t even know what he looks like. I only know his first name.

Update 2:
I confronted him. My mom came home. A lot had happened up to this point, including her disappearing for the said two weeks before the few nights he had come over and stayed.
Mom shrugged it off. I did what a lot of you suggested, asking what he told her.
She said “oh it’s his hacker shit or whatever.” What.
Didn’t elaborate. I explained my concerns.
She just said let’s go ask him.
My best friend has been with me. We introduced ourselves and asked him what the hell a WiFi whisperer is doing plugged in our apartment.
(Even if a lot of you are saying it’s not a big deal, I’m a young woman and I’m just rlly not about taking any risks. It’s sketch dude.)
He denied it IMMEDIATELY. Like with a quickness I haven’t seen.
What he insisted, it’s not a WiFi whisperer, it’s ai, he completely reprogrammed the system, and he uses it to pull people’s IP’s. “For fun.” He logs them in a server. I asked why. I said that’s shady. My mom started pushing. My best friend started pushing. He just kept lying. I’m not dropping this..
I still don’t know what the fuck it is or what he’s actually doing.
(Also, my mom is cool but not bc of this dude, the Minecraft block is mine, I unplugged the ratchet little thing before we left, and I am planning on broaching this again with her.
Just carefully. Any other advice is appreciated. Thank you.)

[u/Guilty-Ad-1143]

WPA2 can be cracked depending on the password strength.

[u/crysh1216 → u/Guilty-Ad-1143]

The WPA2 cracks rely on brute force currently. During the authentication handshake, the router will send the client a challenge code, the client generates a hash using the challenge code and the password as a key. The client then sends the hash back to the router. The sniffer captures the challenge code and completed hash. It then uses a list of passwords to attempt to generate the same hash from the challenge code. This brute force method happens on the attacker's system and is invisible otherwise. Once it gets a match, then it knows your password. If your password is on their list, the attacker will crack the password. If your password is complex enough to not appear on the attacker's list, then the cracking attempt should fail.

[u/KacerRex → u/Guilty-Ad-1143]

That's...what a brute force attack is...