I saw a spam post on hive a few weeks ago too.
There are always some common red flags.
They always try to create a sense of urgent and ask you to act fast. for example they will say that this is limited time offer and will expire in few hours. If there is an offer by legitimate sources, it will be advertised well and there will be plenty of time to avail the offer not just a few hours.
They just want to take every single coin from your accout.