It's definitely liquid damage, but rather than speculating about how it got there, let's focus on what you can do about it. Doesn't matter how it got there at this stage as apple won't cover repairs if there are any signs of liquid damage.
1. Did you purchase 3 year apple care with the machine? You mentioned that you bought it in July, so it's less than a year old. This means that you're not making use of your extended apple care yet, so ask apple to refund it for you. They usually do this as far as I know.
2. The corrosion looks pretty bad, I would hazard a guess that cleaning the logic board with cleaning alcohol will do very little for you. Nevertheless, it's worth a try because it's the only repair option that you have as this stage short of replacing the logic board.
3. If cleaning doesn't help, claim it as accidental damage on your contents insurance. Pay the excess using the money you're getting back from apple for getting your apple care refunded, then get a new laptop from your insurance.
That's how I would go about it...
1. Did you purchase 3 year apple care with the machine? You mentioned that you bought it in July, so it's less than a year old. This means that you're not making use of your extended apple care yet, so ask apple to refund it for you. They usually do this as far as I know.
2. The corrosion looks pretty bad, I would hazard a guess that cleaning the logic board with cleaning alcohol will do very little for you. Nevertheless, it's worth a try because it's the only repair option that you have as this stage short of replacing the logic board.
3. If cleaning doesn't help, claim it as accidental damage on your contents insurance. Pay the excess using the money you're getting back from apple for getting your apple care refunded, then get a new laptop from your insurance.
That's how I would go about it...