Twenty-five years after the September 11, 2001 attacks, the security world has been profoundly transformed. The anti-terrorism measures implemented since then have radically changed the way people travel and live in everyday life, especially at airports and borders.
In the counter-terrorism domain, specialists recognize that "success is avoiding the attack." Intelligence agencies have managed, over these two and a half decades, to halt attempts to repeat attacks of the type that occurred in 2001.
However, this security barrier came at a high price. The privacy of millions of people was sacrificed, both travelers and ordinary citizens who live under constant scrutiny from authorities.
Flying ceased to be the simple experience it was before September 11. Airport controls became more intrusive and burdensome, and the sense of freedom associated with air travel was replaced by permanent surveillance.
