Unauthorized access, data breaches, botnet recruitment and wider network compromise are the main risks tied to Internet of Things devices, which often enter enterprise networks with weak default security and little monitoring.
40 billion global IoT connections are projected by the early 2030s, and NIST and CISA warn that the attack surface is growing faster than many security teams can track.
Weak passwords, outdated firmware and insecure APIs or legacy protocols such as Telnet and FTP give attackers easy footholds; the 2021 Verkada breach and Mirai’s 2016 Dyn attack show how one exposed device can scale into mass disruption.
Hospitals, factories, utilities and smart buildings face cyber-physical fallout when compromised devices become paths to identity systems, business applications or operational technology, driving downtime, recovery costs and regulatory risk.
CISA, NIST and ENISA recommend treating IoT gear like any other critical asset, with unique credentials, MFA, firmware patching, asset inventories, encryption and network segmentation across the full device lifecycle.
As AI now powers both cyberattacks and defenses, are we entering an unwinnable IoT security arms race?
Will new EU laws finally force manufacturers to defuse the ticking time bomb of unsupported 'zombie' IoT devices?
IoT Under Siege in 2026: Surging Attacks, Market Expansion, and the Race for Security Compliance
Overview
In 2026, cybersecurity faces a turning point as the rapid growth of connected IoT devices creates a much larger attack surface. This expansion is being aggressively exploited by cybercriminals using increasingly sophisticated attack methods and taking advantage of new vulnerabilities. As the number of IoT devices rises, organizations and individuals encounter greater challenges in protecting their systems. The combination of device proliferation, advanced threats, and emerging weaknesses highlights the urgent need for stronger security strategies to keep pace with the evolving IoT threat landscape.