Tag Archives: IOT

Why is IOT a threat to internet security ?

IOT

 

The new wave of the internet is among us we are now in the era of IOT “Internet of things”  sensors and devices that connect to the internet from home IP camera to your fridge. This wonderful new era comes with a new challenge for security  professionals

Some of the questions you need to ask yourself as a security professional

How do we protect these devices?

How to check for vulnerabilities in the software?Where are these devices located i.e publically reachable or in your corporate network ?.

Where are these devices located i.e publically reachable or in your corporate network ?.

The growing concern is facing the home user why you ask?

Take the example of the home user the user wants a home security system because they want to monitor what happens at their home they purchase a DVR with IP Cameras. the user setups up the cameras attached to their wifi connection then allows access over the internet for the DVR. Here is where the problem starts and this is what we have seen time and time again  some users if not a majority of them don’t think to change the passwords on the cameras or put an ACL to prevent  connection;s to the camera now that home user has just contributed to the IOT issue just look at what Mirai has done  by scanning the internet for devices such as cameras with weak or default passwords to exploit them to be used as a node on a botnet.

Now comes another issue with the average home network its self-most home users and some small business use consumer grade off the shelf routers  well most home routers from manufactured like Dlink, Belkin etc have been found to have major security holes check out this link  http://www.wsj.com/articles/rarely-patched-software-bugs-in-home-routers-cripple-security-1453136285 which offers insight into this big problem
.

Now unlike your operating system that automatically updates router firmware is usually a manual process. This is not always an easy task especially for a home user then comes the problem of the manufacturers not patching the holes in the first place.

So add poor security practices with vulnerable equipment and a lack of awareness. This is a recipe for disaster and we are starting to see the effects of it now that last massive DDoS attack against DYN  was found to be traffic from many IOT devices.   Check this link for a good article on the details of  the findings.

 

At the end IOT is here to stay so we need to adjust our ways in thinking about security.  Many of these issues were here before IOT like the poor use of passwords and default settings. Poorly written software causing security risks have been around for a long time but the difference now is that there are a huge amount of devices. Now you usually have more Ip cameras and gadgets for example than computers.The vast amount of devices is making attacks such as DDoS exponentially more powerful.

 

How do we fix this?

  • Better security awareness for the home user
  • Better written software that is regularly checked and patched for holes
  • Devices that have a randomized default password such as the MAC  or serial that forces the user to change the password before the device works

The above is a starting point but is not the full solution every case if different.

 

Let me know what you think !.