From the recruitment practice of intelligence agencies around the world, what are the main aspects to examine candidates?

Security background, language ability and professional skills.

1. security background: intelligence agencies need to ensure that their staff do not violate national laws, have no criminal record, have never participated in dangerous things, and have a high sense of security and confidentiality.

2. Language ability: Intelligence agencies need to recruit talents with multilingual ability, who can skillfully use multiple languages, including their own languages and foreign languages.

3. Professional skills: Intelligence agencies need to recruit talents with professional skills, including skills in network security, intelligence gathering, translation and interactive analysis.

The applicant also has very high requirements on the background and qualifications of candidates, and it needs to undergo strict audit and background investigation to ensure that the recruited personnel have high security and reliability.