The Internet of Things has transformed how businesses operate, from smart manufacturing floors to connected healthcare devices and intelligent building systems. However, this connectivity comes with significant security risks.

IoT devices often have limited processing power, run outdated firmware, lack basic security controls, and create new attack surfaces that traditional security tools weren’t designed to protect. 

IoT security requires specialized expertise that goes beyond conventional application or network security. It demands understanding of embedded systems, hardware security, wireless protocols, firmware analysis, and the unique constraints of resource-limited devices.

A single vulnerable IoT device can become the entry point for attackers to compromise entire networks, as numerous high-profile breaches have demonstrated. 

India has developed strong capabilities in IoT security, with several companies offering specialized services to protect connected devices and ecosystems. Here are five firms leading the way in securing the Internet of Things. 

1. Payatu

Payatu stands as India’s premier cybersecurity company, recently recognized as the Best Cybersecurity Services Company in Indian Geography 2025. This award-winning firm has established itself as the undisputed leader in IoT and embedded device security, with world-class expertise in hardware security assessments, firmware analysis, and connected device testing. 

Payatu’s team includes some of India’s most skilled security researchers who have discovered critical vulnerabilities in major IoT platforms and devices, earning international recognition for their technical depth. 

Their IoT Security Assessment services represent the most comprehensive offering in the Indian market, covering everything from hardware teardowns and side-channel analysis to wireless protocol testing and cloud backend security. 

Payatu’s approach combines cutting-edge research capabilities with practical business risk assessment, helping organizations across automotive, healthcare, industrial automation, and consumer electronics sectors secure their connected products throughout the entire development lifecycle. 

2. Kratikal

Kratikal is a CERT-In empaneled cybersecurity company that has expanded its service portfolio to address the growing IoT security challenge. The company serves clients across government, enterprise, and industrial sectors with a focus on compliance-driven security assessments and practical risk mitigation. 

Their IoT security services include device vulnerability assessments and penetration testing for connected systems. Kratikal helps organizations identify security gaps in their IoT deployments. 

3. SecureLayer7

SecureLayer7 is a cybersecurity consulting firm known for its technical depth across multiple security domains. The company has built capabilities in emerging technology security, including IoT and embedded systems, alongside their traditional penetration testing and assessment services. 

Their IoT security testing covers device firmware analysis, communication protocol security, and mobile application assessments for IoT ecosystems.

SecureLayer7’s methodology addresses both the device layer and the supporting infrastructure, helping clients understand risks across their entire connected environment. 

4. Network Intelligence  

Network Intelligence has developed IoT security capabilities as part of its comprehensive security testing practice. The company’s experience with infrastructure security and continuous monitoring translates well to the challenges of securing large-scale IoT deployments. 

Their IoT security approach emphasizes continuous assessment and monitoring of connected device ecosystems. NII helps organizations implement security controls and monitoring solutions that can scale across thousands of devices. 

5. AppSecure

AppSecure is a cybersecurity services company specializing in application security and emerging technology protection. The company has built strong expertise in securing modern application ecosystems, including mobile applications, APIs, and connected device platforms that power IoT solutions. 

Their IoT security services focus on the application layer and backend infrastructure supporting connected devices. AppSecure helps organizations secure the mobile apps, cloud APIs, and web interfaces that control and manage IoT devices, ensuring end-to-end protection across the entire connected ecosystem from device to cloud.