1. In fact, HR of every enterprise knows each other. If there is uncertainty, people will send QQ to ask HR of other companies, and they will know the details of this person as soon as they compare.

2. Every enterprise will have its own resume database, and different enterprises will share the resume database. All included resumes will be kept for a long time, such as 20 years, if the resumes sent by the same person in previous years are inconsistent with those sent today. Which means he's faking it.

3. There is a professional investigation company, and this kind of charge is relatively high. Only for important people.

4. Don't offend HR who recruits employees. Her influence is great, which will discredit your reputation and make other enterprises reject you.