So I'm at a friends house using her wireless. Unsecured wireless. I tell her I will secure it for her. I'm on my laptop, not hers. I use Windows 7, she uses Windows XP. Can I secure her wireless connection from my laptop? and if so, does that mean that anyone that hooks into an unsecured wireless connection can secure it, locking out the owner?
Or is all this moot because I should secure it via her Netgear router?