The September 11, 2001 attacks did not only change New York or the United States of America. The response to the attacks transformed security rules, air travel, the fight against terrorism and surveillance, with consequences that also reached Portugal and remain 25 years later.
The measures implemented after the attacks included significant changes in airplane security rules and in the fight against terrorism, with direct impact on how people traveled and were surveilled around the world.
Portugal was also affected by these changes, which altered how surveillance and security were practiced in the country, integrating into a broader context of international response to the attacks.
The consequences of these transformations remain visible 25 years later, demonstrating the lasting impact that the attacks had on global security and surveillance policies around the world.
