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Knowledge base Updated: February 5, 2026

Biggest Cyber Threats

Learn about the biggest cyber threats that can affect your company. Find out what the most common attacks are and how to effectively defend against them. Discover best practices and tools for protection against cyber threats.

Broadly understood cybercrime has been the biggest threat to organizations for years, representing a constantly evolving challenge that demands continuous vigilance. 72% of companies believe that individual hackers are the most dangerous, though this perception may underestimate the sophistication of modern threat actors.

Year after year, there is a growing threat that organizations see in dissatisfied or bribed employees. Insider threats pose unique challenges because these individuals have legitimate access to systems and often possess detailed knowledge of security measures and valuable data locations. Detecting malicious insider activity requires different tools and approaches than defending against external attackers.

Nearly half of companies are also concerned about organized cybercriminal groups and cyberterrorists. These sophisticated threat actors often have substantial resources, advanced technical capabilities, and the patience to conduct prolonged campaigns against high-value targets. Organized crime groups have professionalized their operations, employing developers, project managers, and even customer service representatives for their ransomware operations.

Understanding the primary attack vectors helps organizations prioritize their defenses. Phishing remains the most common initial access method, with attackers crafting increasingly convincing messages that exploit current events, business processes, and human psychology. Exploitation of public-facing applications, particularly unpatched vulnerabilities, provides another frequent entry point. Supply chain attacks have emerged as a significant concern, allowing attackers to compromise multiple organizations through a single trusted vendor.

Ransomware continues to dominate headlines and incident response efforts. Modern ransomware operations employ double extortion tactics, stealing data before encryption and threatening public release to increase payment pressure. Some groups have evolved to triple extortion, adding DDoS attacks or contacting victims’ customers directly.

It is also worth noting that this year nearly one in ten people had difficulty identifying groups that pose a real threat to the company. This uncertainty underscores the need for comprehensive threat intelligence programs that help organizations understand their specific risk profile and the adversaries most likely to target them.

Effective defense requires a multi-layered approach combining technical controls, employee awareness training, incident response capabilities, and regular security assessments to identify and address vulnerabilities before attackers can exploit them.

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