To do your vigilant best to avoid becoming a victim of a fake job posting, ask the recruiter or organization representative that reaches out for their telephone contact information. Tell them you will call them right back you just need some privacy to take the call. Then look online and find the head office telephone number and call the organization on a telephone. Ask them to verify that the branch or division or company and the person who called you and their title to ensure that the organization is legitimate and the person who reached out to you actually works there.