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IoT: What the Bad Guys Could Do with Your Hacked Devices

Following the third part “IoT: Your Personal Data May Not be as Private as You Think” of this series on the Internet of Things, here is part four focussing on what could happen when IoT private information (discussed in “IoT: Your World at Somebody Else’s Fingertips?”) falls into the hands of the bad guys or the cybercrime underworld.

Suppose the bad guys have access to your personal data or hack into your IoT appliances (worst-case scenario!), they could:

  1. Demand a ransom, threatening to sell your private health records to any interested party
  2. Hijack your appliances and render them non-operational, unless you pay a ransom “fee”
  3. Monitor your house by controlling your security cameras without your knowledge, thus determining your presence or, in fact, absence. Along with your ‘Going to Paris on vacation’ post on social media, it enables them to plan a robbery more accurately
  4. Sell your eating and food preferences to various food manufacturing companies or retailers or even to restaurants and hotels, just to provide an added advantage in targeted selling
  5. Sell your clothes-washing habits and clothing preferences to various fashion companies or retailers
  6. Use your device as part of a botnet of billions of hacked devices to conduct a Distributed Denial of Service (DDoS) attack against a specific target. It is interesting to note that this type of attack using IoT devices has already happened. The light bulbs at your home could well already be part of a botnet, consuming your power and internet bandwidth simultaneously!

Perhaps somebody with a vendetta against you could even resort to changing your refrigerator’s temperature settings so that your food goes bad.

We have been witnessing for years what bad guys are capable of doing, e.g. security breaches at big organizations and infamous ransomware. The same tactics might apply here too.

One other dangerous scenario is within the context of cyber warfare. During war time an enemy nation could launch a massive cyber attack on IoT devices in another nation, rendering every IoT device dysfunctional resulting in more chaos, damage and potential loss of life. To this effect, IoT appliances may also be prone to cyber attacks by terrorists.

… to part5: How are we going to protect..

Image credit:
www.wired.com/tag/iot

Senthil Velan
Manager,Vulnerability Research

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