Bitcoin Faucet was a popular fancy word starting in 2010s for sites which give tiny free bitcoin. It started as an advertisement mechanism where it asks you to view some advs, play some games to get reward but very soon it evolved into just click, wait and get rewarded. That's when malicious programs and fake advs quickly spread. Even when a faucet is legit and good pay master, it would become one of the popular targets for hackers. The hypes tuned down mostly after 2016. Faucet is still legit if one is starting a new venture and wants to attract traffic. It's similar to buying users for your business. source : https://en.bitcoinwiki.org/wiki/Faucet#:~:text=Bitcoin%20-faucet%20is%20a%20system%2C%20where%20Satoshis%20are,chief%20research%20worker%20of%20Bitcoin%20Foundation%20in%202010.