Why do iot devices pose a greater security risk than other computing devices on a network

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Last updated: April 8, 2026

Quick Answer: IoT devices pose greater security risks than traditional computing devices primarily due to their limited processing power and memory, which prevents robust security features like encryption and regular updates. Many IoT devices have default passwords that users rarely change, making them vulnerable to brute-force attacks. The Mirai botnet attack in 2016 exploited over 600,000 IoT devices to launch massive DDoS attacks, demonstrating their susceptibility. Additionally, IoT devices often lack standardized security protocols, with a 2021 study finding that 57% of IoT devices are vulnerable to medium- or high-severity attacks.

Key Facts

The Mirai botnet attack in 2016 compromised over 600,000 IoT devices to launch DDoS attacks
A 2021 study by Palo Alto Networks found 57% of IoT devices are vulnerable to medium- or high-severity attacks
IoT devices often have limited processing power preventing implementation of robust security features
Many IoT devices ship with default passwords that 15% of users never change according to 2019 research
The number of IoT devices is projected to reach 29 billion globally by 2030 according to Statista

Overview

The Internet of Things (IoT) refers to the network of physical devices embedded with sensors, software, and connectivity that enables them to collect and exchange data. The concept emerged in the late 1990s, with Kevin Ashton coining the term in 1999 while working on supply chain optimization at Procter & Gamble. Early IoT implementations included RFID technology for inventory tracking. The proliferation accelerated in the 2010s with the advent of affordable sensors and wireless connectivity, leading to smart home devices, wearables, and industrial IoT applications. By 2020, there were approximately 11.7 billion IoT devices globally, with projections reaching 29 billion by 2030 according to Statista. Unlike traditional computing devices designed with security as a priority, many IoT devices were developed with functionality and cost as primary concerns, creating inherent security vulnerabilities from their inception.

How It Works

IoT devices pose greater security risks through several interconnected mechanisms. First, their hardware limitations—constrained processing power and memory—prevent implementation of robust security features like encryption, firewalls, and intrusion detection systems that are standard on computers and smartphones. Second, many IoT devices use simplified operating systems with known vulnerabilities that manufacturers rarely patch due to cost concerns or device obsolescence. Third, these devices often connect to networks using default credentials that users frequently don't change; research shows approximately 15% of users never modify default passwords. Fourth, IoT devices typically operate continuously, providing persistent attack surfaces for hackers. Fifth, they often communicate through unsecured protocols and lack standardized security frameworks, making them susceptible to man-in-the-middle attacks, data interception, and botnet recruitment. The distributed nature of IoT networks compounds these issues, as compromising one device can provide access to entire networks.

Why It Matters

The security risks of IoT devices have significant real-world consequences. Compromised IoT devices have been weaponized in major cyberattacks, such as the 2016 Mirai botnet that disrupted internet services across Europe and North America by harnessing vulnerable cameras and routers. In healthcare, vulnerable medical IoT devices could endanger patient safety through manipulated data or device malfunction. Smart home breaches have led to privacy violations, with incidents of hacked cameras and microphones reported globally. The economic impact is substantial, with IoT-related cyberattacks costing businesses an estimated $1.2 billion annually according to 2022 industry reports. As IoT adoption grows in critical infrastructure, transportation, and industrial systems, these security vulnerabilities pose national security risks, potentially enabling large-scale disruptions to power grids, transportation networks, and manufacturing systems.