The attacks on the Twin Towers, occurring on September 11, 2001, caused immediate changes in security rules at airports and borders.
The measures implemented were described as "tighter" compared to those that existed previously, representing a significant shift in how security was managed in these spaces.
Among the main measures imposed in the so-called post-attack "new world," the tighter screenings at airports and the prohibition of certain items on board aircraft stand out.
These security changes were applied broadly, affecting all passengers and operations at international airports.
