Top 10 Emerging Challenges of Cybersecurity

Cybersecurity has never been more complex for modern organizations, regardless of industry. The attack surface that organizations must defend today looks nothing like it did five years ago. Connected devices have proliferated across every industry: sensors on factory floors, infusion pumps in hospital wings, smart meters on utility grids, IT workstations, and routers in every remote office. With an estimated 18 billion IoT devices deployed globally in 2025, a number expected to exceed 40 billion by 2030, organizations can no longer afford to ignore the challenges of cybersecurity across the entire cyber asset attack surface. These ten challenges have emerged as frequent and pervasive across industries globally, but with the right technology and visibility, organizations can overcome them just as swiftly as they arise.

Top 10 Emerging Challenges of Cybersecurity

1. The Expanding IoT Attack Surface

IoT devices are everywhere, and they are being attacked at a rate that should concern every security leader.  Between January and October 2025 alone, security researchers detected 13.6 billion IoT attacks. That volume is not slowing down.

What makes this challenge so difficult is that IoT devices were rarely designed with security as a priority. Many ship with default credentials, run outdated firmware that cannot be easily patched, and operate in ways that make traditional endpoint detection agents impossible to deploy. Once compromised, a device can continue performing its primary function (a camera still functions, a sensor still reports) while quietly serving as a foothold inside your network. Security teams often discover compromised IoT devices months after the initial breach, not from the device itself triggering an alert, but from the downstream damage it enabled.

Effective IoT security starts with a complete, accurate device inventory. You cannot protect what you cannot see, and most organizations significantly underestimate the number of connected devices in their environments.

2. OT and ICS Environments Under Siege

Operational technology and industrial control systems were built for reliability and availability, but were historically not connected to networks. As these have evolved, enhanced connectivity has created pathways for better automation and smarter manufacturing, but have created ample challenges in cybersecurity. These systems control physical processes in manufacturing plants, power grids, water treatment facilities, and oil and gas pipelines. The consequences of a successful attack go far beyond data loss: they can mean production shutdowns, safety incidents, and threats to public infrastructure.

The threat landscape has shifted decisively toward OT. Global ransomware attacks rose 32% in 2025, with manufacturing accounting for 14% of all incidents, making it one of the most targeted sectors of any industry. The energy sector experienced a 459% increase in IoT-based attacks between mid-2024 and mid-2025. State-aligned threat actors, including the VOLTZITE group linked to China’s Volt Typhoon operations, spent much of 2025 methodically compromising small-office routers at electric utilities and telecommunications providers, pre-positioning for potential future disruption.

OT environments present unique security challenges. Many systems run legacy software that cannot be patched without a scheduled shutdown. Uptime requirements make traditional vulnerability management approaches impractical. And because OT devices often connect directly to IoT sensors and IT systems, a breach in one domain can cascade into others: a dynamic that attackers have learned to exploit deliberately.

3. Ransomware Targeting Connected Infrastructure

Ransomware has evolved from a static threat into one of the most sophisticated and financially devastating cybersecurity challenges organizations face in 2026. According to GuidePoint Security’s GRIT report, 2025 was the most active year for ransomware ever recorded, with a 58% year-over-year increase in victims. More than 7,500 victims were claimed across all sectors – an average of 145 new victims added to dark web data leak sites every week.

The tactics have shifted as well. Where ransomware once meant encrypting files and demanding payment for the decryption key, today’s operators increasingly skip encryption entirely, moving straight to data theft and extortion. Over 70% of attacks in late 2025 involved data theft. In OT environments, attackers are gaining familiarity with industrial protocols, and experts anticipate the emergence of malware specifically designed to manipulate industrial processes rather than simply locking systems.

What makes ransomware particularly dangerous in connected device environments is the lateral movement problem. A single unpatched IoT device, such as a camera, a printer, or a building management system, can serve as the entry point. Without proper network segmentation or other similar risk mitigation tactics, attackers can move freely from that initial foothold to high-value systems in minutes. 

4. IoMT and Patient Safety Risk

The Internet of Medical Things introduces a dimension of cybersecurity risk that goes beyond financial impact: patient safety. Healthcare organizations often operate thousands of mission-critical connected devices, including infusion pumps, imaging systems, patient monitors, and ventilators. These devices are sourced from diverse manufacturers, each running different operating systems, firmware versions, and communication protocols. 

The financial consequences are severe. Healthcare IoMT breaches cost an average of $10 million per incident, typically the highest of any industry. According to research from the Ponemon Institute and IBM, healthcare breach costs have reached an average of $42 million in the most serious cases. But the non-financial consequences matter more: disrupted diagnostic workflows, delayed treatments, and in the worst cases, direct threats to the patients those devices are meant to protect.

The regulatory environment is tightening. Proposed updates to the HIPAA Security Rule would require mandatory network segmentation, multi-factor authentication, encryption of ePHI at rest and in transit, and comprehensive asset inventories. These are no longer optional best practices — they are becoming enforceable standards. For healthcare organizations, that means the security of every connected medical device is now also a compliance obligation.

5. AI-Accelerated Threats

Artificial intelligence has fundamentally changed the speed and scale at which attackers operate. The IBM 2026 X-Force Threat Intelligence Index found a 44% increase in attacks beginning with the exploitation of public-facing applications, largely driven by AI-enabled vulnerability discovery. Active ransomware and extortion groups surged 49% year-over-year. Vulnerability exploitation became the leading cause of attacks, accounting for 40% of all incidents observed by X-Force in 2025.

CrowdStrike’s 2025 State of Ransomware Survey found that 76% of global organizations struggle to match the speed and sophistication of AI-powered attacks. Nearly 50% of organizations fear they cannot detect or respond as fast as AI-driven attacks can execute. Phishing remains a leading initial access vector, and 87% of surveyed organizations say AI makes lures more convincing, with deepfakes emerging as a major driver of future campaigns.

The implications for IoT and OT security are significant. Attackers can now automate device discovery and vulnerability scanning across entire IP ranges, identifying exposed PLCs, HMIs, VPN gateways, and IoT devices faster than security teams can patch them. What once required sophisticated nation-state resources is increasingly available to financially motivated criminal groups.

6. Supply Chain and Third-Party Risk

Modern connected environments depend on an enormous web of third-party vendors, manufacturers, and software providers. Each relationship is a potential attack vector. IBM X-Force identified a nearly fourfold increase in large supply chain and third-party compromises since 2020. With AI-powered coding tools accelerating software development, the pressure on software pipelines and open-source ecosystems is growing. 

For IoT and OT environments, supply chain risk has a unique dimension: the hardware itself. Firmware embedded in devices at the manufacturing stage can carry vulnerabilities or malicious code that organizations have no ability to detect after deployment. BadBox 2.0, disclosed in July 2025, compromised more than 10 million smart TVs, digital projectors, in-car infotainment systems, and digital picture frames through malware distributed at the supply chain level. A single misconfiguration at a grow-light manufacturer exposed 2.7 billion IoT device records: a reminder of how quickly third-party security failures translate into organizational risk.

Addressing supply chain risk requires understanding every device in your environment at a deep level: what firmware it runs, what third-party components are embedded in it, and whether any of those components have known vulnerabilities.

7. The Visibility and Inventory Gap

Security teams cannot defend environments they do not fully understand. Yet inventory gaps remain one of the most persistent cybersecurity challenges across every sector. Organizations routinely undercount their connected devices, miss shadow IT deployments, and lack the detailed device context needed to assess true risk.

This problem is especially acute in OT and IoMT environments. A large health system might operate tens of thousands of devices from hundreds of manufacturers. A manufacturing plant might have PLCs, HMIs, and sensors running alongside IT systems, all interconnected in ways that were never formally documented. Traditional IT vulnerability scanners actively probe devices for information: a safe approach for laptops and servers, but one that can crash or disrupt fragile OT systems and medical devices.

You cannot prioritize the highest-risk devices if you do not know they exist. A complete, continuously updated device inventory is the foundation of every other security capability.

8. Vulnerability Prioritization at Scale

Even organizations with comprehensive device visibility face a second challenge: too many vulnerabilities to address and not enough resources to patch all of them. CISA published 240 ICS security advisories in 2024 alone. The average enterprise faces thousands of open CVEs at any given time. Security teams cannot patch everything, so they must make strategic tradeoffs based on risk of exploit and severity of exploit.

The stakes of getting prioritization wrong are high in both directions. Focusing on low-risk vulnerabilities wastes limited security resources. Missing a high-risk vulnerability in an exploitable device leaves the organization exposed.

Effective vulnerability prioritization requires more than a CVSS score. It requires understanding which vulnerabilities are being actively exploited in the wild, which devices are exposed in ways that make exploitation likely, and what the business impact of a compromised device would be. Risk-based prioritization and selecting the most viable path towards mitigation is the only sustainable path forward.

9. Network Segmentation Complexity

Network segmentation is one of the most effective controls for limiting the blast radius of a breach. If an attacker compromises one device, segmentation prevents them from moving freely to high-value systems across the network. It is also one of the most difficult controls to implement correctly in complex environments.

Traditional VLAN and firewall-based segmentation approaches were not designed for the device diversity found in modern IoT, OT, and IoMT environments. Nearly 80% of segmentation projects never operationalize due to the complexity of modern networks, data gaps, and static security policies that create more challenges than they protect against. 

The regulatory pressure is building. Proposed HIPAA Security Rule changes would make network segmentation a mandatory control for healthcare organizations. Segmentation is no longer just an optional best practice; it’s a necessary compliance standard for reducing the blast radius of an attack.

10. The IT/OT Convergence Security Gap

For decades, IT and OT security operated in separate silos. IT teams managed servers, workstations, and enterprise software. OT teams managed industrial control systems, PLCs, and operational equipment. This has transformed dramatically in recent years as these two disparate systems become increasingly intertwined.

Digital transformation, remote monitoring, and operational efficiency initiatives have connected OT systems to corporate IT networks in ways that create significant security risk. Dual IT/OT attacks now average $4.56 million in damages, substantially more than attacks confined to a single domain.

Closing the IT/OT convergence gap requires a unified security program with visibility across both domains, with cultural and technological changes to support clear ownership and accountability for these critical junctures.

Addressing the Cybersecurity Challenges of the Modern Era

The cybersecurity challenges facing organizations in our modern world share a common thread: they are all rooted in incomplete visibility, reactive processes, and security tools that were not designed for the complexity of connected device environments.

Asimily’s platform is purpose-built for this environment. We provide deep, continuous visibility into every IoT, OT, and IoMT device on your network — without the active scanning that disrupts sensitive systems. Our risk-based vulnerability prioritization helps security teams focus on what actually matters, not just what has the highest CVSS score. And our network segmentation and compensating control capabilities help organizations reduce risk even for devices that cannot be patched.

The threat landscape will continue to evolve. The organizations that build proactive, risk-based security programs today will be the ones prepared for what comes next. To learn more about how Asimily can help you address these cybersecurity challenges, contact us today to schedule a demo.