A friend of mine told me the following story:

He was just having a short break in an cafe with a friend, both where using their laptops, checking a few websites. Suddenly his friend, who is working in a middle sized enterprise in Germany, said, he wanted to send him a few files (very big ones). – How did he want to sent those files? – No problem, they could just share a folder somehow. They were using the same “system” in their company, he already shared the folder and my friend had access to it now.

Only then, he suddenly realized, that actually every member of the (unsecured) WLAN in this cafe could also see his files shared files.

Small hint: If you share folders in a company and exchanging data via a network, you should be careful when connecting to unprotected WLANs, for example at home or in the internet cafe.

Either you change the status of your shared folders back to normal or you have to make sure, that you firewall settings do not recognized the WLAN as “secure area”.

I guess, that is the least you can do to protect your company secrects …. :)