Why was Spanish Afraid of filibusters?

Spain feared filibusters because these private adventurers threatened its colonial territories in the Americas. Filibusters, often supported by American interests, carried out expeditions to seize land, destabilizing Spanish control and undermining its authority. The rise of filibuster activities highlighted Spain's vulnerability and the growing aspirations for independence among its colonies, further complicating its colonial governance. This fear ultimately contributed to Spain's declining influence in the region during the 19th century.