The upcoming Captain Marvel movie features the introduction of the Skrulls, a shapeshifting race of aliens with green skin and pointy ears. They’re the villains who are at war with the Kree, another race of aliens that Captain Marvel is allied with at the start of the film. The Skrulls’ most iconic storyline in the comics is the 2008 event Secret Invasion where numerous citizens of Earth and even several superheroes are revealed to be Skrull sleeper agents who then enact their years-in-the-making plan to conquer the planet. With Captain Marvel establishing the Skrulls in the ‘90s of the Marvel Cinematic Universe, it certainly opens the door for Secret Invasion to come to fruition in a later movie.
Source: IGN.com Marvel ‘Planting Seeds’ for Secret Invasion in Captain Marvel