About

About FEI-FEI WU (FEEI)

君不见，黄河之水天上来，奔流到海不复回。
君不见，床头明镜悲白发，朝如青云暮成雪。
人生得意须尽欢，莫使金樽空对月。
天生吾徒有俊才，千金散尽还复来。

Hi, I’m Fei-Fei Wu (吴飞飞), aka Feei, a cybersecurity researcher based in Hangzhou, China. I deeply love my work and the city.

My hobby and my job happen to be the same—cybersecurity. My ideal is to make some positive changes in the world, and my dream is to travel around the world.

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Cybersecurity

I’ve been interested in Hackers since childhood because they can give an ordinary person superpowers, just like Elliot in Mr. Robot and Neo in The Matrix. Read more about my journey in cybersecurity!

Annual/Monthly Reviews

Invest all my time, energy, and money in my long-term vision, focus on doing difficult but right things, keep track and document my transformation, and continuously refine my insights and strategies.

More

If you’d like to learn more about me, you can find additional details about my experiences in my article, “Stand out in the Sea of Resumes“.

I’m happy to discuss anything related to my written content with you. Emails allow for deep thinking and more focused discussions compared to instant messaging tools, so don’t add my WeChat account, just email me feei#feei.cn!

Publications

《网络安全面试指南》

About FEEI.CN

About FEEI.CN’s Cybersecurity

Layer	Threat	Protective Measures
Network	DDoS/CC	Set DNS record to gov site
	MITM	HTTPS（SSLLabs Test Score A+）; HSTS; HSTS Preload
Application	XSS	Security Header(CSP/X-XSS-Protection)
	iFrame	Security Header(X-Frame-Options)
	MIME Sniffing	Security Header(X-Content-Type-Options)
	Fronted Backdoor	Security Header(Permissions-Policy)
	SQLi	Change Database Prefix; No sensitive data;
	Brute-force login accound	Custom username; Strong password; 2FA; Disable xmlrpc; Hidden login url; Automatic IP Blocking Brute-Force
	Sensitive data leakge	DEBUG False; Disable PHP Error; Hidden PHP/Wordpress/Nginx Version; Automatic IP Blocking Vulnerability Detection
	Trojan/Mining/Webshell	DISALLOW_FILE_EDIT; Separate user group for static/php files, read-only permissions, no write access except in upload directory;
	0day	Separate user WP-CLI mode for automatic updates of Core/Plugin/Theme to latest version; inotify www directory; Automatic IP Blocking When Web attack;
	Ransomware	Daily Backup of files and database to remote server; Daily backup of ECS Image;
Server	Service Brute-force/Vulnerability	Only 80/443 ports opened; Automatic IP Blocking When Port Scan; Private IP Login with Key; Outbound Internet Access Restriction;

About FEEI.CN’s Speed

Layer	Items	Company	Config/Version	Result
Network	DNS	DNSPod		<60ms
	VPS	Aliyun	4M, Hangzhou(South) + Beijing(North)	<15ms
	CDN	–	–	–
Base Application	Blog Software	WordPress	Automatic Update
	Web Server	Nginx	1.20.1+HTTP2
	Program Language	PHP	8.0.30+OPCache+FastCGI Cache
Software Application	Theme	Typology	Text based with no image required
	Text	Lighthouse	/
	Compression/Text	Minify	/
	Compression/Image	Webp	/
	Compression/Transmission	GZip	All file type
	Async/Text	async	Statis files
	Async/Media	Lazy Load	/
	Cache/Browser	HTTP Cache	no-cache
	Cache/Application	FILE Cache	Page/Post
	Cache/Database	Redis	3.2.12
	Other/URL Redirect	/	0
	Other/Other domains resources	/	0
Speed Test		PageSpeed Insights（Lighthouse）	Performance Score	100
		Pingdom	Performance Score	94

• 歌单: 周杰伦

• いつも何度でも - 宗次郎

• 愛にできることはまだあるかい - RADWIMPS

• 夢灯籠 - RADWIMPS

• 三葉のテーマ - RADWIMPS

• 笔记 - 周笔畅

• 如愿 - 王菲

• 体面 - 于文文

• 海底 - 凤凰传奇

• 童年 - 张艾嘉

• 东西 - 林俊呈

• 卜卦 - 崔子格

• 后来 - 刘若英

• 黄昏 - 周传雄

• 房间 - 刘瑞琦

• 青花 - 周传雄

• 勇气 - 梁静茹

• 宁夏 - 梁静茹

• 泡沫 - 邓紫棋

• 城府 - 许嵩

• 素颜 - 许嵩

• 幻听 - 许嵩

• 花海 - 周杰伦

• 夜曲 - 周杰伦

• 退后 - 周杰伦

• 外婆 - 周杰伦

• 逍遥叹 - 胡歌

• 起风了 - 买辣椒也用券

• 春庭雪 - 等什么君

• 七里香 - 周杰伦

• 猜不透 - 丁当

• 不怪她 - 马思唯

• 一笑江湖 - 临渊不羡鱼

• 忽然之间 - 莫文蔚

• 千里之外 - 周杰伦

• 我们的歌 - 王力宏

• 无名的人 - 孙楠

• 个人简介 - 安全着陆

• 此生不换 - 青鸟飞鱼

• 有何不可 - 许嵩

• 孤单心事 - 蓝又时

• 铁血丹心 - 罗文，甄妮

• 红色石头 - 李智楠

• 我欲乘风 - 安全着落

• 回到过去 - 周杰伦

• 回到未来 - Double Zhuo & Tizzy T

• 电台情歌 - 莫文蔚

• 清明雨上 - 许嵩

• 需要人陪 - 王力宏

• 灰色头像 - 许嵩

• 纸短情长 - 烟把儿

• 一生所爱 - 卢冠廷&莫文蔚

• 平凡之路 - 后会无期

• 漫步人生路 - 邓丽君

• 盛夏的果实 - 莫文蔚

• 小手拉大手 - 梁静茹

• 每个人都会 - 方大同

• 听妈妈的话 - 周杰伦

• 红色高跟鞋 - 蔡健雅

• 多余的解释 - 许嵩

• 最好的安排 - 曲婉婷

• 爱就一个字 - 张信哲

• 可惜不是你 - 梁静茹

• 会呼吸的痛 - 梁静茹

• 玫瑰花的葬礼 - 许嵩

• 有没有人告诉你 - 陈楚生

• 给我一首歌的时间 - 周杰伦

• 最远的你是我最近的爱 - 车继铃

• 总有一天你会在我身边 - 棱境

• APT - ROSÉ & Bruno Mars

• Time - 小青龙 & 辉子

• August - Intelligency

• Don't matter - Akon

• Free Loop - Daniel Powter

• Jar of Love - 曲婉婷

• Plain Jane - A$AP Ferg&Nicki Minaj

• Thank You - Dido

• SeeYouAgain - Wiz Khalifa&Charlie Puth

• Rage Your Dream - m.o.v.e

• Welcome to New York - Taylor Swift