Which type of attacker is likely responsible for a website defacement via SQL injection and posting a manifesto?

A hacktivist is typically motivated by political, social, or ideological reasons. Their actions often aim to promote a specific agenda or draw attention to a cause, which aligns with the described scenario of website defacement and posting a manifesto. By using SQL injection to access and alter a website, a hacktivist can effectively make a statement or protest against perceived injustices, utilizing the platform to share their views with a broader audience. This method of operation is common among hacktivists who seek to disrupt or challenge the status quo rather than serve financial or political agendas like other types of attackers.

In contrast, organized crime groups tend to focus on financial gains through activities like data theft or ransomware. Advanced persistent threats (APTs) usually involve sophisticated and stealthy attacks aimed at theft of sensitive information for espionage or long-term objectives, rather than the dramatic and public defacement characteristic of hacktivism. Nation-state attacks might have political motivations but typically involve more advanced tactics and are not usually associated with the public message of a manifesto. Therefore, the scenario aligns most closely with the actions and motivations of a hacktivist.