Which group is most likely responsible for attacks from within a company?

The group most likely responsible for attacks from within a company is insiders. Insiders refer to individuals who have legitimate access to the organization's systems and data, which can include employees, contractors, or business partners. Due to their established access and knowledge of internal systems, insiders can exploit vulnerabilities or misuse their access for various malicious purposes, such as data theft, sabotage, or financial fraud.

Insider threats can be particularly challenging to manage because these individuals often understand the company's security protocols and can navigate around them effectively. Their proximity and familiarity with the organization’s environment give them an advantage over external attackers, who typically have to breach multiple layers of security to gain access.

In contrast, while other groups like hacktivists may conduct protests or disruptive actions targeting a company, their efforts are generally external. Script kiddies are typically less skilled individuals who use existing tools and scripts to execute attacks without understanding the underlying technologies. Competitors might engage in corporate espionage, but such actions typically do not involve accessing information as insiders would. Hence, insiders are the most significant risk when it comes to internal attacks.