I recently connected my Windows laptop to a new MacBook with a USB cable because I wanted to transfer some pictures and documents. When I opened the Network section on the MacBook, I saw two devices with completely different names. One was the Windows laptop's actual name, but the other had a name I didn't recognize: "mentalistchaos." Both computers were also connected to the same Wi-Fi network. I'm the only person using the network, and my phone is the only other connected device, so I'm worried that the Windows laptop might be compromised. Both entries disappeared when I disconnected the PC. I ran a thorough antivirus scan and it found nothing. Is this likely to be malware, or could it be caused by network sharing or the way the computers are connected?
3 Answers
For transferring the files, the simplest low-risk option is an external USB drive. You can also use a trusted cloud-storage service or configure Windows file sharing and connect to it from the Mac over Wi-Fi. Before doing that, set the Windows network profile to Private only on your home network, review which folders are shared, and turn off sharing or network discovery afterward if you don’t need it. If you remain worried, change the Wi-Fi password and check the router’s connected-device list, but a clean antivirus scan and the behavior you described don’t by themselves suggest that the PC is hacked.
This doesn’t automatically indicate a hack. Windows can advertise several network services or connections, and a computer may appear more than once because of network discovery, file sharing, virtual adapters, Wi-Fi plus Ethernet, or other networking software. The second name could also be an old computer name, a manually chosen hostname, or a name generated by another service. A human-sounding name like “mentalistchaos” isn’t proof that another person is on the network.
A normal USB cable doesn’t create a direct file-transfer connection between a Windows PC and a Mac. Both computers act as hosts, so the USB connection itself probably isn’t what made the second entry appear. The Mac is most likely seeing devices announced through the local network, not discovering two computers through USB.
That makes sense. I found out afterward that I can’t transfer files with an ordinary USB cable, but I was still confused about why two names appeared at the same time.
I’ve also seen unfamiliar names appear because devices or services announce themselves on a local network. Checking the PC’s network adapters and sharing settings would be more useful than judging the name alone.