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FreeBuf,国内领先的网络安全行业门户,同时也是爱好者们交流与分享安全技术的社区。

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Home of Kali Linux, an Advanced Penetration Testing Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.

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HackerOne develops bug bounty solutions to help organizations reduce the risk of a security incident by working with the world’s largest community of ethical hackers to conduct discreet penetration tests, and operate a vulnerability disclosure or bug bounty program.