Hawkshit refers to something someone did that was particularly manipulative, devious, and deceptive in order to gain something.
It can be as lowly as someone getting credit for something they didn't do or create, to being a complete cash scam.
1) A certain single-hit rap star took Queen and David Bowie's background music from their song "Under Pressure" and put it in his, without giving credit until he was forced to. Total hawkshit.
2) I ordered something online from a hawkshit website and didn't realize it until a bunch more cash than I used to pay for the item mysteriously went missing from my bank account. The item also never arrived...