These all scam methods already well-known in the crypto industry. So I am not much worried about existing crypto users for such as giveaway scam methods. The real concern about new crypto users who aren't familiar with this kind of scam technique. But it's quite surprising when I see any forum users fall into this type to scam although I haven't seen many cases lately.
Anyway, there are many warning threads on the forum from where we can learn. But if we can't prevent our greedy behavior then we can't prevent loss as well since it's the most important to scamming someone.
Giveaways are the most basic scams there is AFAIK, it's just that we are on cryptocurrency community that we are only to see a lot of fake giveaways regarding cryptocurrency, easy to spot a red car when you think of a red car right? The problem with warning threads is that it is sometimes ignored by a lot of people even though there are a lot of them, I don't want to give up but people don't seem to care when it hasn't happened to them yet.
For this newbies should need to verify if the giveaways is legitimate or not since if they just join without knowing the background for sure they will get caught by the scammers using that methods.
Also maybe people doesn't read the warning threads since most provably they are been hype first and join before they locate the thread about such warning givens, so maybe from this experience they can spread the facts about this fake giveaways and will warning people who wants to join on this kind of schemes.