Insect and Spider Identification: Need Help Identifying, 1 by BankSinatra

BankSinatra wrote:
Working at my desk at home and felt something crawling up my leg looked down and saw this - I'm freaked out by spiders especially the venomous kind that can cause necrosis.
Please tell me what kind of spider this is and all the potentially dangerous stuff about it thank you!

It's probably about the size of a penny/dime if spread out - I have it trapped under a glass cup right awaiting your responses to determine what to do with it next.

Location New York City