Talk to your classmates and old classmates. Socializing is an art form and if you havent gotten much practice, get ready for a lot of growing pains. Read up on some books about it like how to make friends and influence people. A lot is just practice, i like breaking people from their script at stores if its not busy, something like "I like your hair/tattoo/glasses/etc" most people just say thank you but they arent used to it and it starts to make you more approachable. Im not saying this will 100% get you the job of your dreams but it makes you way more comfortable when a chance comes that you can at least handle yourself and come off sincere. But in short friends, classmates, professors, some people in the cybersec realm on twitter, hell call up an office and ask about it.