Crawler software is a kind of software commonly used when collecting a large amount of information. Those who use vulnerabilities to grab information are called malicious crawlers.

The recruitment website allows companies and individuals to search resumes, which is the entrance for crawler software to collect resume information. Large recruitment websites, including 58 City, Zhaopin, and Worry-Free Future, all provide resume search rights, and the search results present most personal information, but you need to pay the website to check the contact information.

Crawlers are also called web spiders and web robots. Is a program or script that automatically crawls information from the World Wide Web according to certain rules.