Secutity breach mac OS X, hacked???

[benj101]

Hello guys,

Firstable, thanks for posting on this forum. I have hesitated a long time before to buy a Mac, surfed a lot here for informations, and finally bough one 6 months ago.
(I don't know much about computer in general and English isn't my first language so sorry for maybe approximative vocabulary below)

So, and but ... I am so happy with my Mac,it's working so well by itself, and persannaly have been so busy that I didn't have time to try to discover how it "works". So far only the "apparently" classical IP address problem in public places(!) if anybody got a solution for this one, would be happy of it

BUT, i apparently (!!!), and not voluntarely share files with " tangxianlu-tosh " and " chinese-a15ac45 " snapshot below.
After my last sofware update, I noticed them on my "shared part", tied to click on it, gave me a failed connection, they disappeared, reappeared and them ... disappeared again ... I did two quick search on the net and didn 't find anything about nowhere ... which worries me even more ...

Is that normal??? is it a hack??? and if yes what can I do of it???

Thanks a lot for some anwers.

 

[satcomer]

That shared thing just "shows" you what computers (in the network you are on) are "sharing" files with the network. You were not hacked unless you use a super weak password and have in System Preferences->Sharing tab and are sharing you whole hard drive.

 

[r0k]

I agree. The stuff you see in the "shared" section of finder is stuff OS X sees on your local network. If you are in a library or public hotspot, you will see other computers but you can safely ignore them. Make sure you disable the guest account on your Mac, pick a complicated password you can remember so somebody at the next table doesn't gain access to your Mac after only a few guesses, turn on the firewall (being careful not to make it so strict you can't do anything), and only share a handful of folders you intend to share. In mine, I only share 2 public folders. My firewall is off but my Macbook never travels outside the safety of my firewalled home network. Only my iPad travels.

 

[benj101]

Thank you for the answers ... I'm feeling some kind of a fool to do not have noticed that the "shared" section of the column was only detecting possible connections.

Password was already set and the guest account was limited but now I disabled it.

Thanks again.

 

[chrono1081]

I love how my printer shares things on my network. Very weird. (This is the printer that is not set to share)

 

[aarond12]

@OP: Turn on your firewall if you are very concerned about your connections being broadcasted. That's the easiest way to prevent people from easily seeing your computer.