Connected devices will grow from 8.7 billion in 2020 to more than 25 billion by 2030 – a 300% increase. This surge makes IoT security standards vital for companies of all sizes.
The situation raises red flags because IoT devices lack built-in security features. Most of them send unencrypted data over the internet. These devices run on embedded systems that can’t support basic security tools like antivirus software. Complex IoT systems with massive interconnections make these security problems even worse.
IoT technology has made life easier and improved efficiency in many industries. But it has also created more entry points for hackers to exploit. Your organization faces major risks from software flaws and update challenges. Even when patches exist, applying them can be difficult.
This piece covers everything about IoT security standards. You’ll learn about basic risks and ways to protect your systems. We’ll explore state-of-the-art standards like ISO/IEC 27400:2022, NIST frameworks for the USA, and ETSI standards for the EU region. This knowledge will help you pick and implement security measures that fit your needs.
Understanding IoT Security and Its Unique Risks
The modern IoT ecosystem works with complex relationships where devices talk to each other on their own. Traditional IT security frameworks don’t handle these machine-to-machine interactions well.
Device-to-device communication without human oversight
IoT devices work in an automated environment and communicate without direct human supervision. Many systems are designed as “black boxes” that show little about their state and makeup. This hidden nature creates basic security challenges:
- Limited access to device software and configuration
- Unclear identification of external services interacting with devices
- Security monitoring becomes harder due to restricted management options
NIST research shows security teams don’t deal very well with IoT oversight because of missing management features, limited interfaces, and problems with large-scale management. 98% of all IoT traffic is unencrypted. This means sensitive data moves “in the clear” across networks where anyone could intercept it.
Unlike regular IT systems, many IoT devices put availability and integrity ahead of confidentiality because they directly affect physical operations. This change in priorities needs a different security mindset. To name just one example, see how an attacker who reads data might gain little advantage, but someone who changes that data could set off dangerous events affecting physical systems.
Expanded attack surface from billions of connected devices
The size of the IoT security challenge is huge. Current estimates show connected devices at around 20 billion, and this number could reach between 50-100 billion by 2030. Companies will have four times more devices than users connecting to their networks by 2030.
This rapid growth creates an attack surface bigger than ever before. Unit 42’s research shows 57% of IoT devices can fall victim to medium or high-severity attacks. Hackers use network scanning, remote code execution, and command injection to exploit these weak points.
Different types of IoT systems make the problem worse. Devices range from consumer gadgets to industrial sensors. Each comes with different operating systems, communication protocols, and security features. A complete list of networked devices becomes very hard to maintain, yet it’s crucial for security to work.
“The same connectivity that makes IoT devices powerful also makes them vulnerable. Each additional protocol, whether Wi-Fi, Bluetooth, Zigbee, or cloud APIs, represents another potential entry point for attackers,” security researchers at Finite State explain.
Effect of breaches on critical infrastructure
Failed IoT security in critical infrastructure leads to more than just lost data – it can cause physical harm. Healthcare, energy, transportation, and manufacturing sectors face the biggest risks.
IoT breaches in critical systems can cause:
- Operational disruption and equipment damage
- Financial losses from production downtime
- Physical safety hazards for workers and the public
- Cascading failures across interconnected systems
A real-life example happened in 2022. A global automotive parts supplier faced a ransomware attack through an IoT weakness. Production lines stopped, causing millions in lost revenue. Another case saw attackers try to poison a Florida water treatment plant in 2021 by tampering with industrial control systems.
Adding IoT to critical infrastructure “complicates traditional security risk assessment strategies”. These frameworks weren’t built for IoT systems that change often and come in many forms. Current approaches don’t address IoT device limits like processing power and battery life well.
IoT malware attacks rose 37% in early 2023. This means tens of millions of attempts to take over cameras, routers, and sensors. Compromised devices often join botnets that can launch devastating distributed denial-of-service (DDoS) attacks on other targets.
Securing IoT devices needs a clear understanding of how they differ from traditional IT systems. Standards must address their specific weak points.
Top 5 Challenges in Securing IoT Devices
Security vulnerabilities in IoT devices continue to be a problem, even though people know more about the risks. Let’s get into the five most important challenges you need to think over when implementing IoT security standards.
Weak or default authentication credentials
Default credentials are one of the easiest security weaknesses attackers can exploit in IoT security. IBM research shows 86% of people have never changed the admin password on their home router. Device makers ship their products with simple, easy-to-guess credentials like “admin” or “password.” This creates immediate security risks.
The results can be devastating. Hackers broke into a Pennsylvania water facility by exploiting Unitronics programmable logic controllers that used “1111” as their default password. The notorious Mirai botnet targeted IoT devices with default credentials and built a massive network of compromised devices to launch distributed denial-of-service attacks.
Organizations must change all default passwords before they put devices on untrusted networks. On top of that, authentication should include:
- Multi-factor authentication where possible
- Certificate-based authentication for device-to-device communication
- Account lockouts after failed login attempts
- Unique login URLs for administrative access
Unencrypted data transmission
Missing encryption in IoT communications is a major security hole. The numbers are alarming – 98% of all IoT traffic is unencrypted. Another study shows 91.5% of data moving through IoT devices in company networks had no encryption.
Without encryption, sensitive information moves in plain sight. Attackers can step between devices and steal or change data as it moves. This risk becomes especially dangerous in healthcare, where medical imaging equipment and patient monitoring systems often send data without encryption.
Standards like ETSI EN 303 645 tackle this problem by suggesting secure communication channels, specifically TLS 1.2 (or 1.3) over HTTP, to protect data.
Firmware vulnerabilities and lack of updates
IoT firmware security faces unique problems because of quick development cycles and minimal testing. Device makers often release products with poor security features. Microsoft’s 2023 review points to more attacks targeting IoT device firmware and BIOS for this exact reason.
Many manufacturers stop supporting older models, leaving them open to new security threats. IoT Security Foundation’s research reveals unpatched firmware causes 60% of IoT security breaches.
Zscaler’s ThreatLabz found IoT malware attacks jumped by 400% in 2023 compared to the year before. Their researchers found that 34 out of the 39 most common IoT exploits were over three years old on average.
Insecure communication protocols like HTTP and Bluetooth
Old and unsafe communication protocols leave IoT devices open to various attacks. HTTP (without TLS) and older versions of Bluetooth have big security holes that attackers love to exploit.
Bluetooth versions before 2.1 + EDR allow short PINs that attackers can guess easily. Versions 2.1 and 3.0 might fall back to Security Mode 1, which offers zero protection. Even new Bluetooth systems aren’t safe, BLE DoS attacks can overwhelm devices with too much traffic and shut them down.
With HTTP, missing TLS encryption means anyone can intercept passwords and sensitive data. AWS IoT Core fixes this by requiring TLS version 1.2 or 1.3 for all communications.
Limited patching capabilities in legacy devices
IoT devices often can’t handle robust update systems because they lack resources. Unlike regular IT systems, these devices have limited processing power, memory, and storage. This makes it hard to run security software or update them regularly.
Patching becomes a real headache in critical environments where downtime can get pricey. A 2023 survey reveals 71% of security professionals think patching vulnerable systems is too complex, with IoT devices being the toughest to manage.
Trafalgar Wireless IoT connectivity solutions help solve some update problems with their specialized single-network IoT SIMs that enable secure remote access.
Network segmentation is one way to deal with this, you can create separate network zones for older devices with known security holes.
Core Security Requirements for IoT Environments
Organizations need three basic capabilities to set up proper security controls for IoT deployments. Their connected device ecosystems remain vulnerable to sophisticated attacks without these core elements.
Device discovery and classification
A solid security strategy starts with finding and identifying every IoT device on your network. This task might seem simple at first, yet many enterprises struggle to keep accurate IoT device inventories.
“The first thing an enterprise should do is get visibility into the exact number of IoT devices connected to its network,” states Palo Alto Networks in their cybersecurity guidance. A complete inventory should include:
- Manufacturer and model identification
- Serial numbers
- Hardware, software, and firmware versions
- Operating system information
- Applied configuration details
Classification adds another layer of intelligence beyond basic identification. Each device’s risk profile needs assessment along with analysis of its behavior patterns relative to other network devices. Advanced classification methods can use techniques like term frequency-inverse document frequency (tf-idf) algorithms to match device communications against known profiles.
“Similar device has similar property,” notes research published in the OAIJSE journal. Security systems can automatically categorize new devices by comparing their properties against established databases using this principle.
Trafalgar Wireless’s IoT connectivity solutions have multi-network IoT SIMs that aid secure device identification on cellular networks. This adds an extra layer of authentication during the discovery process.
Network segmentation based on risk profiles
Network segmentation becomes your next critical requirement after device identification and classification. “The security goal of network segmentation is to reduce the attack surface,” explains Fortinet’s research on IoT security.
Your network gets divided into separate zones through segmentation, which limits lateral movement during breaches. An unsegmented network works like an apartment building without internal walls, intruders can access everything once inside. Proper segmentation creates barriers that contain potential security incidents.
This approach becomes vital especially when you have IoT environments since most traditional endpoint security solutions cannot install agents on IoT devices. Practical implementation includes:
- Creating virtual local area network (VLAN) configurations
- Establishing next-generation firewall policies
- Isolating IoT devices from critical IT assets
- Implementing access control lists (ACLs)
“By implementing virtual local area networks (VLANs) and access control lists (ACLs), organizations can isolate IoT devices and critical systems,” notes Device Authority in their zero trust guidance. This isolation helps contain potential breaches and minimizes what security professionals call the “blast radius” of an attack.
Policy enforcement and monitoring
Device identification and network segregation achieve little without continuous policy enforcement. An effective IoT security framework should follow a zero trust model where “no device, user, or application is granted implicit access”.
Live monitoring becomes crucial since IoT devices typically cannot run traditional security agents. Effective policy enforcement consists of several key elements:
Authentication and authorization mechanisms must prevent unauthorized access, this becomes crucial in sensitive environments like healthcare where users need different access levels.
Data confidentiality and integrity need protection through encryption throughout the communication chain. Sensitive information travels unprotected across networks without proper encryption.
Anomaly detection capabilities through continuous monitoring help identify suspicious behavior. “Organizations must continuously monitor device behavior, looking for signs of abnormal activity that could indicate a compromise,” advises Device Authority.
A well-implemented policy enforcement system responds automatically to potential violations by sending warnings or taking remedial actions like isolating affected devices. The most advanced solutions merge Policy-as-Code (PaC) approaches where security and compliance rules stay in version control and get tested like software artifacts.
Overview of Key IoT Security Standards
Leading organizations have created complete standards to secure connected devices. These frameworks give manufacturers and organizations clear guidelines to implement security in a variety of IoT environments.
ISO/IEC 27400:2022 for lifecycle security
ISO/IEC 27400:2022 gives the most complete approach to IoT security and privacy protection. This standard, published in 2022, offers guidelines on risks, principles, and controls made for Internet of Things solutions. It covers everything in security through the whole device lifecycle, from design and manufacturing to deployment and decommissioning.
The standard covers both cybersecurity and physical security, which makes it useful in many sectors. Yet ISO/IEC 27400:2022 isn’t directly certifiable on its own, even with its excellent guidance. Organizations usually implement it with the broader ISO 27001 framework to show compliance.
NIST IR 8259 for core capabilities
The National Institute of Standards and Technology (NIST) created the IR 8259 series to help manufacturers build security from the earliest design stages. This framework defines device cybersecurity capabilities that organizations need to support common cybersecurity controls.
NIST IR 8259A sets a core baseline of technical capabilities, while NIST IR 8259B describes non-technical supporting activities manufacturers should think over. These publications together create a starting point for manufacturers who design new IoT products.
NIST IR 8259 proves very valuable for organizations in the US government space or those who sell to federal agencies. Its documentation-focused approach helps identify security capabilities needed for IoT devices throughout development.
ETSI EN 303 645 for consumer IoT
The European Telecommunications Standard Institute (ETSI) created EN 303 645 as the first globally applicable standard for consumer IoT cybersecurity. This June 2020 standard sets a security baseline for internet-connected consumer products like toys, baby monitors, door locks, and home assistants.
ETSI EN 303 645 has 13 provisions that translate into 33 mandatory requirements and 35 recommendations. The standard focuses on three main priorities:
- Eliminating universal default passwords
- Implementing vulnerability disclosure policies
- Keeping software updated
This standard has gained strong international acceptance and has become the foundation for certification schemes in many countries. UK consumer IoT security legislation also lines up with it, making it crucial for manufacturers who sell in European markets.
OWASP IoT Top 10 for risk awareness
The Open Web Application Security Project (OWASP) IoT Top 10 identifies the most critical security vulnerabilities in connected devices. OWASP aims to raise awareness about risks rather than provide a certifiable framework. The list has:
- Weak/hardcoded passwords
- Insecure network services
- Insecure ecosystem interfaces
- Lack of secure update mechanisms
- Insecure components
- Insufficient privacy protection
- Insecure data transfer and storage
- Lack of device management
- Insecure default settings
- Lack of physical hardening
Developers find this resource very valuable during design and testing phases. It helps them spot and fix common vulnerabilities before product release.
FIPS 140-3 for cryptographic modules
Federal Information Processing Standard (FIPS) 140-3 focuses on cryptographic security. It defines four security levels for cryptographic modules, with each level adding more security requirements.
These levels start from simple security (Level 1) and progress through role-based access controls (Level 2) and identity-based authentication (Level 3) to the highest physical protection (Level 4). Organizations use this standard to verify their encryption tools meet federal requirements for protecting sensitive information.
The Cryptographic Module Validation Program (CMVP), a joint effort between US and Canadian governments, handles FIPS 140-3 validation. Government data handlers must comply with FIPS, though many non-government applications use it too.
How to Choose the Right Security Standard for Your Use Case
Picking the right IoT security standards needs a step-by-step plan based on several key factors. Each industry faces its own set of threats, rules, and technical limits that help determine which standards work best.
Mapping standards to industry and region
Your security standards should line up with both your industry and the places you do business. US healthcare organizations usually need to follow HIPAA regulations, which point them toward NIST or ISO standards. Companies that supply to the federal government must have FIPS certification.
Here’s a practical way to pick standards by exploring both industry needs and local rules:
| Industry | Recommended Standards | Primary Regions |
| Healthcare | HIPAA (regulation), FIPS 140-3 | USA |
| Consumer Devices | ETSI EN 303 645, ISO/IEC 27400 | EU, Global |
| Industrial/OT | IEC 62443, NIST IR 8259 | Global, USA |
| Automotive | ISO/SAE 21434 | Global |
| Finance | PCI DSS, FIPS 140-3 | Global, USA |
| Government | NIST SP 800-series, Common Criteria | USA, Global |
| Electric Utility | NERC CIP, IEC 62443 | USA, Canada, Mexico |
Local regulations often point to specific standards. The EU’s Radio Equipment Directive (RED) and upcoming Cyber Resilience Act (CRA) heavily rely on ETSI EN 303 645. The US takes a different path with NIST frameworks, and the IoT Cybersecurity Improvement Act builds on NIST SP 800-213 guidance.
Understanding certifiable vs. non-certifiable standards
A key difference exists between standards that offer certification paths and those that give directional guidance. This affects how you implement them and position yourself in the market.
Certifiable standards include:
- ISO/IEC 27001 – Provides formal certification process
- UL 2900 – Offers product security verification
- Common Criteria – Enables standardized security evaluation
- FIPS 140-3 – Validates cryptographic modules
Standards like OWASP IoT Top 10 are a great way to get guidance but don’t have formal certification paths. Your choice between them should depend on customer awareness, certifiable standards become more valuable in industries where certification helps you stand out.
It’s worth mentioning that “Security standards are guidelines or best practices that organizations can follow to ensure their products meet up-to-date security measures… Regulations are legal requirements set by government bodies or regulatory agencies”. Standards define requirements you can use during development, while regulations give you ways to prove compliance.
Aligning with customer and regulatory expectations
Customer expectations play a big role in choosing standards, beyond just technical needs. Getting certified can give you an edge in markets where consumers know about security certifications. One study matched the IoT Security Foundation Compliance Framework with ETSI standards because organizations needed a way to “communicate and verify” security measures to customers.
Common Criteria’s rise shows this customer-focused approach. It moved from protection profiles to collaborative Protection Profiles (cPPs) to create “a framework for a wider, holistic view of security and therefore of confidence”.
A full picture should include:
- Current and pending regulations in target markets
- Customer security awareness in your industry
- Competitive landscape and certification practices
- Risk profile of your specific devices
Complex deployments work best with a layered approach. Start with baseline standards for your device category. Then add industry-specific standards that fit your use cases. Finally, look at local requirements that might affect market access.
Step-by-Step Guide to Implementing IoT Security Standards
IoT security standards implementation starts with simple steps to check your current setup and fix any weak spots. You need to pay attention to several phases.
Performing a gap assessment
Your first step is to compare what you do now with what your chosen standard requires. This basic review shows what your security framework lacks. Here are some key questions to ask:
- Are default credentials still in use on devices?
- Is sensitive data encrypted both at rest and in transit?
- Do you have a vulnerability disclosure policy?
- Are software updates cryptographically signed and authenticated?
“Achieving market access and compliance with regulatory standards in different regions can be a challenging task,” notes industry research. Many companies don’t deal very well with finding all gaps without a clear plan.
Mapping controls to standard requirements
The next step creates specific controls for each gap you find. You need a control plan that shows how to put each security requirement in place. For example:
| Control Area | Implementation Example |
| Authentication | X.509 certificates, OAuth2 |
| Encryption | AES-256 for storage, TLS 1.3 for transmission |
| Secure Boot | Verified bootloader with signed firmware |
| Update Mechanism | OTA updates with integrity verification [304] |
The “Security Development Lifecycle” approach works well here because it handles security at each software development stage.
Testing and validation of security controls
Your security controls need a full test after implementation. Standards that need certification require systematic testing:
“Testing can be conducted in-house or through a third-party provider. If done in-house, organizations should make sure developers and testers remain independent to avoid conflicts of interest”.
Testing should simulate attacks, check encryption setup, test authentication systems, and confirm firmware update processes work correctly. The OWASP IoT Security Testing Framework helps many teams plan their tests and set boundaries.
Documenting policies and procedures
Good documentation proves compliance and guides daily operations. A complete set of documents should include:
- Policies and procedures for incident response
- Asset inventory covering all devices and firmware
- Risk assessment and mitigation plans
- Security testing reports
- Third-party agreements
“Documentation of cybersecurity information helps potential IoT device customers to make informed purchase decisions that support their organization’s cybersecurity requirements”.
Maintaining Compliance Through the IoT Device Lifecycle
Security doesn’t stop after you implement IoT security standards. Your devices need ongoing attention to stay compliant once they’re up and running.
Automated patching and firmware updates
IoT devices usually ship with outdated firmware that can be years old with critical vulnerabilities. This creates a perfect opportunity for attackers. Manual patching doesn’t work well when you scale up, which leaves many organizations at risk.
Automated update mechanisms solve this challenge by:
- Rolling out patches gradually to catch defects
- Making sure similar devices stay operational during updates
- Checking digital signatures on distributed artifacts
“The lack of efficient tools to manage IoT device deployments has become a liability for modern organizations,” notes security experts. Firmware updates remain the biggest challenge IoT teams face today.
Password rotation and certificate management
Password security is the life-blood of IoT device protection. The world now has over 19.8 billion IoT devices as of 2025, but IoT malware infections jumped 27% year-over-year. These attacks often target weak credentials.
Automated password rotation helps organizations update passwords easily for devices of all sizes. Many organizations don’t bother with password maintenance or rotation without automation. They end up using similar credentials for every user and device.
Certificate management needs attention throughout your device’s lifecycle. IoT Edge can use certificates to authenticate with Azure, issue module server certificates, and connect to EST servers. You need proper renewal processes to avoid certificate expiration problems.
Ongoing monitoring and alerting
Your IoT ecosystem needs constant monitoring for better visibility. This helps you spot vulnerabilities, catch unauthorized access attempts, and protect networks from data breaches.
Good IoT monitoring has:
- Software patch and firmware update tracking
- Detection of strange transmissions or connections
- Compliance checks with regulatory frameworks
Trafalgar Wireless’s specialized multi-IMSI IoT SIMs come with security features that support continuous monitoring capabilities for IoT deployments. These features help maintain compliance throughout your device’s lifecycle.
Proving Compliance with IoT Security Standards
Proven compliance with IoT security standards builds trust and creates opportunities. A third party can verify your steadfast dedication to security and help customers make better decisions.
Using ISO 27001 or UL 2900 for certification
ISO 27001 is the global measure for information security management systems. This standard helps you create a well-laid-out framework to manage sensitive data. UL 2900 provides a focused path for IoT-specific certification. This standard reviews software in network-connected products to find vulnerabilities and weaknesses. Certification requires:
- Submitting required documentation
- Going through evaluation by an accredited body
- Addressing any non-conformities
Security assessments and audit readiness
Security assessments should happen regularly to spot gaps in your IoT environment. These include:
- Vulnerability Data – Raw findings from automated tools
- Risk Assessment – Expert analysis of your specific risk profile
- Guidance – Prioritized action steps
Independent testing verifies that your implementation meets requirements. This third-party verification adds more credibility than self-assessment claims.
Reducing sales friction with provable security
Certified security makes B2B sales processes faster. Enterprise buyers just need proof of security before finalizing deals, many ask for detailed questionnaires and documentation.
Ready-made security documentation packages prevent delays. These should include security whitepapers, completed standard questionnaires, and compliance reports.
Conclusion
IoT devices have spread through our daily lives, making proper security standards a top priority for organizations worldwide. This piece explores the complex nature of IoT security challenges and available frameworks.
Billions of IoT devices create an expanding attack surface that needs a well-laid-out security approach. Your organization should know these devices work differently from traditional IT systems. They often communicate without human oversight and put availability ahead of confidentiality.
Five major challenges make your connected devices vulnerable to sophisticated attacks. These include weak credentials, unencrypted data, firmware vulnerabilities, insecure protocols, and limited patching capabilities. Each challenge needs its own solution strategy.
The foundation of any working IoT security program rests on three core requirements. Device discovery lets you identify network components. Network segmentation helps isolate threats. Policy enforcement ensures consistent security across your ecosystem.
Your industry, location, and customer needs determine the right standard choice. ISO/IEC 27400:2022 gives complete lifecycle guidance. NIST frameworks work better for US-based operations. European markets benefit from ETSI EN 303 645, which guides consumer device security.
Standard implementation begins with gap assessment. You’ll need to map controls to requirements, test security measures, and document your approach. This step-by-step process builds security into IoT deployments from scratch.
Security needs constant attention even after implementation. You’ll need automated patching, credential management, and continuous monitoring. Many organizations work with specialists like Trafalgar Wireless. Their security-enhanced SIMs are a great way to get IoT connectivity solutions that handle these challenges.
Certification frameworks like ISO 27001 or UL 2900 prove your steadfast dedication to security. They speed up sales cycles and build customer trust. Third-party verification adds more weight than self-assessment.
The road to IoT security might look challenging. Standards give you a clear path forward. Organizations that welcome these frameworks protect their connected systems better. They gain an edge in markets where security matters more each day. Your security experience starts when you understand these standards and apply them across your device fleet.
