Invisibility
Specter can render himself unseen by the naked eye. This is no trick of bending the light, and as such he can move about his environment unseen and act without being observed. Unfortunately anything else on his body will not turn invisible, unless treated by a special photoreactive chemical.
Martial Arts Training
Specter began martial arts training around the age of four, as it was expected that he would take up 'the family business'. Much of his training is based in mixed martial arts, but he also was taught how to fight using a bo staff. The emphasis on his training was on making fast, hard hitting strikes, intended to take a target down quickly before being detected.
Multilingual
Specter - in his civilian identity as Hanson Thomas-Beaumont - has traveled all over the world, and as such he has picked up a few languages in his time. English, of course, is his primary language, but he also is quite fluent in French. He knows enough Arabic in several dialects to get by and understand most of what is being said to (or around) him.
Parkour
In his college days at NYU, Hanson thumbed his nose at the idea his father's more business minded options when it came to campus organizations, and instead joined groups that just sounded like fun. One of those was the campus's parkour club. There he learned how to navigate his environment to get from Point A to Point B in the most direct manner possible. Of course, he had no idea that later in life, he would be using these skills in his work as Specter.
Photography
Hanson's love for photography began back in high school, but he was really given the opportunity to enhance those skills when he went to pursue his degree in journalism at NYU. While this isn't a skill that comes into use as Specter, it's how he makes ends meet...and sometimes is the catalyst for jumping into action in his hero guise.