Aside from getting scammed and getting your effort and time wasted? I think these are the worst already. The only consideration why many people are still engaging with airdrops is simply because in most instances, participants will only have to work for the rewards, which is different from launchpools that requires investing to the project. Well, airdrops are simply just an option or alternative to actual investment. So if you won't be really having your way through aidrops then the only thing left is to invest. So maybe it depends on your preference and tolerance. When I was doing a couple of airdrop engagements, I also suffered from frauds and scam campaigns but it is quite a part of the journey I think.
So I'm wondering, is it possible that your device could be hacked into while visiting some of the sites you are made to visit while performing some of the airdrop tasks?
It's possible. Once you're visiting an unknown site with malware, your device can be hijacked. This happens often. Airdrop creators force you to visit an unknown site. Then, they force you to connect your wallet to this malicious site to finish the task.
Is there a possible strategy some hackers and fraudulent people can use in harming those that are involved in the tapping thing so that if we know it we can avoid them?
There is a possible strategy to avoid such case. You should copy the link and paste it into notepad or a search engine. Then, you will know if it is a real or fake site with malware.
Utilizing communities to check a project's credibility would also be a good thing to do to lessen your worries. At least in such way we would be able to gain legitimate insights from fellow investors.