Now that I’ve upgraded from the Qolsys IQ1 to the IQ2+ panel, deciding what to do about encryption.
I do have a few S-Line sensors and I’m replacing a few of the older non encrypted sensors for key areas such as the doors.
The key question is why do I care about encryption for all of the other locations.
What type of replay attack could be possible that I care about?
As an example … if I have 20+ windows … all non-encrypted Qolsys sensors … and someone tries to break-in through a window, wouldn’t the sensor still send the unencrypted “open” signal to the panel, and no matter what anyone did the panel would still see the trigger.
Just trying to justify why I would want to replace any of the window sensors. This is not a financial question, purely technical.
I’m definitely changing out the door sensors to S-Line, and I’m thinking that I should change out the motion sensors to S-Line as well, because someone could track all movement in the house with unencrypted motion sensors, but why would I replace all the window sensors? What could happen?
And forget about the financials, this is purely a security question. I’m not sure how unencrypted window sensors can cause a security exposure, but very willing to be educated!
Also, when a S-Line sensor enrolls for the first time and then encrypts all signals going forward, does it then never send any unencrypted signals ever? I’m asking because I thought that the Qolsys sensors were all 1-way, so how does the sensor know that it’s a panel capable of encryption? Does it always send both unencrypted and encrypted, or switch to encrypted only for panels that support encryption.