How to identify a job scammer?

Hello there, I'm curious about how to effectively identify a job scammer in today's digital age. With the rise of online job platforms, it seems like scammers are getting more creative in their attempts to lure unsuspecting job seekers. Can you share some telltale signs or red flags that should immediately alert us to a potential scam? And what steps should we take if we suspect a job offer to be fraudulent? Your insights would be greatly appreciated!