better than Devolo - but with vulnerability ....

have tried for several years with a Devolo system, which is but repeatedly came to Verbindungsabrüchen and eventually individual adapters were no longer accessible.
The Netgear actually provides reliable the connection.
Last weekend, however, the shock: In the Network Software suddenly appeared two adapters more than I have with me unknown names !!! I live in a relatively large apartment building and had often the impression that the current networks are not really cleanly separated from each other. But apparently someone had exactly the encryption itself, and as I was in the middle of it to my network! So what must not happen actually. I then all adapters again re-encrypted and can no longer discover "other" network, which was suddenly connected to my the. Perhaps that a "1 to 1 million random" - maybe not an unpleasant feeling remains. And since I this "Network Monitor from Netgear" is not also have all too often, I do not even know how long someone with the alleged "not to crack network" probably no ill intent and noticing it himself, with me in it was (or I ????? with him). An unpleasant feeling remains, unfortunately, have no real alternative - but now run at each start-up the monitor and watch me for who is there still anything ....