Ambimat GroupAmbimatAmbiSecureSIMAuthAmbiAutomationEngineering BlogAhmedabad · India · Est. 1982
HISTORICAL ARCHIVE · Originally published April 27, 2020
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IoT Security Challenges: Firmware & Scale (Part 2)

Second of a 2020 two-part look at IoT security — further challenges: infrequent firmware updates, small-scale attacks, autonomous systems and user privacy.

This is an earlier piece from the AmbiSecure engineering archive. Where the field has moved on, the link above points to current coverage of the same topic.

Part two of the IoT security series picks up from Part 1, continuing the 2020 enumeration of what makes IoT estates hard to secure: patch visibility, firmware update cadence, autonomous data handling, and user privacy.

How do you tell if a device is affected?

IoT devices are difficult to monitor at scale, making breach detection unreliable. "Most of the users don't get to know if their device is hacked," creating visibility gaps even for service providers managing numerous interconnected devices.

Data protection and security challenges

Data traverses multiple devices rapidly — mobile, web, cloud — via internet transmission, exposing information to leakage and unauthorized access. Non-compliant service providers compound regulatory violations and privacy breaches.

Use of autonomous systems for data management

Managing massive data volumes requires AI tools and automation, yet misconfiguration risks operational outages in critical sectors like healthcare, finance, power, and transportation.

Small Scale Attacks In IoT

Small-scale attacks on common devices like printers and cameras evade detection more effectively than large-scale breaches.

Infrequent Firmware Updates

Infrequent firmware updates leave IoT devices vulnerable to known exploits.

IoT Financial-Related Breaches

Financial systems using IoT for payments face theft risks, though some organizations employ machine learning and blockchain countermeasures.

Security of autonomous vehicles

Connected vehicles face remote hijacking threats.

User Privacy

Employee-issued IoT devices create internal privacy exposure, where breaches damage organizational reputation.

Conclusion / About Ambimat Electronics

Close to 4 decades of design experience.

Frequently asked questions

Which challenges does part 2 cover?

Patch visibility, firmware update cadence, autonomous data handling, and user privacy — continuing the enumeration begun in part 1.

Why are IoT breaches hard to detect?

IoT devices are difficult to monitor at scale, so breach detection is unreliable. Most users never learn that a device has been compromised, and the visibility gap affects service providers managing large interconnected estates too.

Has IoT security become a regulatory requirement?

Yes. The EU Cyber Resilience Act and U.S. cyber-trust-mark labelling have moved IoT security from best practice to obligation.

Why is infrequent firmware updating such a persistent problem?

Manufacturers prioritise shipping new devices over maintaining old ones, and many fielded devices have no reliable update path at all, so a disclosed vulnerability can stay live for the remaining life of the product.

What privacy concerns does the post raise?

Data from IoT devices traverses multiple systems on its way to an application, and users have little visibility into where it comes to rest or who can read it along the way.

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