The correct option is Cyber attacks.

Cyber attacks most often put a company's information security at risk because they are widespread, automated, and they target networks, applications, and people. Modern cyber attacks include phishing, ransomware, malware, credential theft, and supply chain compromises and industry breach reports show that these types of attacks account for the majority of reported incidents and data breaches.

Attackers can scale their activity and reuse tools and vulnerabilities across many organizations at once which increases both frequency and impact compared with other threat types.

Insider threats can cause serious breaches because insiders often have access to sensitive systems and data, but they are generally less common than external cyber attacks according to most breach studies.

Severe weather and physical catastrophes can disrupt operations and damage infrastructure, but they are not the most frequent cause of information security incidents and they rarely result in the same volume of data compromise as cyber attacks.

Human mistakes and accidental disclosures are a frequent source of incidents such as misconfigurations and unintended data exposure. Many of these mistakes are then exploited by cyber attackers, so while human error is important it often contributes to or enables cyber attacks rather than replacing them as the primary threat.

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