
Community Admin
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Jam Detection Update
RF Jamming is a technical reality. All devices that use wireless communications protocols can be jammed. The good news is, a) this is *not* a known attack vector for home security, because it's not a reliable way to enter and move about a home undetected, and b) we have a jam detection algorithm that is being constantly tuned and updated behind the scenes, which notices if someone is trying to jam your system and alerts you. More on that below:
A little tech talk:
First we'd like to highlight one of the most annoying issues in detecting jam attacks: False positives are a huge problem. Radio signal "noise' is everywhere and intermittent. So for some customers these alerts could become annoying -- and potentially harmful if they created the incorrect feeling that their system isn't working. We are constantly tuning our detection algorithm to get better and better at differentiating between normal, ubiquitous RF interference and actual, concerning jamming activity without frustrating you with a barrage of nuisance alerts.
Second, jamming without being detected would be extremely difficult, as is clear in the Youtube video. The jam detection was triggered several times by the tester. Our system's array of multiple sensors and cameras (layers of protection), wireless communications protocols and jam detection algorithm work together to make it very hard for anyone to interfere with your system undetected.
Here's why:
The jamming demonstrated is under controlled conditions, with the "jammer" in close proximity to the base station and the sensor which is transmitting. Our testing shows that moving the jammer to another area away from the base station and having the sensor closer to the base station, the sensor could still communicate with the base station. Also, if the jammer is tuned too close to our transmission frequency, as it moves closer to the base station, it will trigger the RF jamming warning. In other words, prior knowledge of the layout of our motion sensors, door sensors and base station in the customers home and a rehearsal of how to move about the home would be necessary to confidently select a frequency that will both jam and not be detected -- let alone on the first try. Plus they would have to keep the jamming interference in that range for the entire time needed to pull off a burglary, while continuing to avoid detection. It's not impossible...but we're continuously improving our system to make it increasingly impossible.
We frequently tune our detection parameters and release security and usability updates. We are in the process of another round of detection algorithm tuning which will continue to refine our ability to differentiate between the brief interference noise that typically occurs in many homes, and actual bad actors. This update has been in the works for a while -- it's currently in beta and will be released remotely in a month or so.
Also, SimpliSafe already offers video verification -- an opt-in service where, in the event of an alarm, our professional monitoring center views video from your home, prioritizing it for the police. This enhances police response times when real alarm events are in progress, and cuts down on false alarms and unnecessary police dispatches. In the near future, we will offer video verification for potential interference events, where experts at our monitoring center can review footage and determine if police dispatch is warranted.
Finally, a reminder (found in this CNET article):
"The most likely burglary scenario by far is the unsophisticated crime of opportunity, usually involving a broken window or some other kind of brute-force entry. According to the FBI, crimes like these accounted for more than half of all residential burglaries in the US in 2017. The wide majority of the rest were unlawful, unforced entries that resulted from something like a window or a garage door being left open. The odds of a criminal using technical means to bypass a security system are so small that the FBI doesn't even track those statistics.'
We are a company that focused on protecting you, which means we work on protecting you against even unlikely scenarios like this.

coltmaster1
Advocate
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2.8K Messages
4 years ago
Not sure if your new router has anything to do with this or not. I guess you could try moving it further away from the base station, or vice versa.
It's already been determined that both SS2 and SS3 can be bypassed with the low frequency transmitters - inside and outside of a home. However, some people received text/push notifications, others didn't, one person received a notice well after the event. The question is, what is the customer supposed to do with the information? Run around the home to see if they have their own radio signals interferring? Asking neighbors about their garage door openers? Asking construction crews down the street if they're using walkie-talkies? Stealthing in the dark looking for intruders at 2:00 in the morning? How is the average user supposed to diagnose in order to feel their system has not been compromised? That's all I was asking of SS, how does a user differentiate an interference in a radio signal in the home vs an outside jamming detection?
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jrref
15 Messages
4 years ago
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coltmaster1
Advocate
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2.8K Messages
4 years ago
The average user has no idea what the message means, or least of all, how to mitigate it. I'd wager half of SS' customers may not even be aware of the jamming potential for their systems (much like they weren't aware of the issues for SS2, that of course, were never mitigated).
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jrref
15 Messages
4 years ago
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dandydons
370 Messages
4 years ago
Infact there adding more and more hardware into SS3 (I'm being asked tomorrow for feedback on something in design stage and it is for SS3 so if ss4 ever arrives I cant see if being for a very long time)
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coltmaster1
Advocate
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2.8K Messages
4 years ago
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jrref
15 Messages
4 years ago
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coltmaster1
Advocate
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2.8K Messages
4 years ago
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glenbarrington
216 Messages
4 years ago
You have to know EXACTLY what it is you are trying to protect, and who you are trying to protect it from, in order to build an adequate safeguard. If you haven't done that, and are just buying a system out of a general sense of paranoia, then nothing you buy will be safe from criticism. Simplisafe is a tool in a much larger security plan that you should be developing.
I am a retired database administrator, I was responsible for protecting a variety of corporate data. I can assure you there is no such thing as "buy one and done" when it comes to security. You have to identify ALL the likely threats and develop countermeasures to those threats. You need to identify the threats you can't protect against as well. AND you need to identify what you will do if your security has been breached. How do you recover?
It's the same with home security. The threats are different, the tools are different, and the costs are different, but planning and implementation are essentially the same.
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oldguy
16 Messages
4 years ago
Some days ago, I got a message that one of the motion sensors was now offline. I did what I could from hundreds of miles away, but the issue remained. I asked myself, "Why would a sensor that had fresh fuel and that tested fine all of a sudden go offline"?
This is where the power of suggestion comes in... I had been reading the forums regarding jamming with interest so the first thing I thought of was is someone fooling around outside the house? About ten hours later I get a message that says the sensor is back online and all is well. What the...? Since then, no issue with this sensor.
Yesterday another sensor that has fresh batteries and tested well in another room actually alarms. I'm looking at inside/outside cameras not attached to the SS3 trying to see what's going on, when SS Central calls. I tell them that there's not much to see but the sensor that has gone off is not near anything that can fall, roll or "see" movement outside the house so please send the cavalry, which they do. Again, I am hundreds of miles away.
I see the cavalry as they arrive and after they check...all is tight and secure. So, the question is, what's going on with these motion detectors? Were they wonky from the factory? No...they've been working perfectly for a year. Batteries? No...all of the juice is new.
Now the big question. Is somebody trying to learn or jam my system? What do you guys think?
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coltmaster1
Advocate
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2.8K Messages
4 years ago
As you're probably aware, the motion sensors detect heat, so perhaps your furnace kicked on, there's a register nearby? Window with sunlight moving across the window? A bug on the lens?
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6662dose
1 Message
4 years ago
wewe handles diaa ñ demutant dé jar ph donacidoncie ahorrarán caphi l8ter cas close u trap-clck
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oldguy
16 Messages
4 years ago
One thing I will testify to is that I've had a Simplisafe system in the house for 5 years now with no false alarms. The system has gone off to be sure, but once it was a Roomba that we forgot to turn off before we left that closed a door and the other two times were also true alarms caused by something other than a bad guy. That's it, as I remember.
The SS3 system is about as solid as it can be in my opinion and I feel better having it.
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coltmaster1
Advocate
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2.8K Messages
4 years ago
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sevensiamesecats
Advocate
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2.2K Messages
4 years ago
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