zhijianliu.com

.com crawl

First seen 2026-04-18 · Last seen 2026-05-19 · ok HTTP/1.1 200 1711 ms crawled 2026-05-12

US · 104.21.20.137 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

sector tech type homepage

HTML metadata

Title: Zhijian Liu
Description: Zhijian Liu is an Assistant Professor at UC San Diego. His research focuses on efficient machine learning and systems.
Language: en
Canonical: https://zhijianliu.com/

Open Graph

url: https://zhijianliu.com/
title: Zhijian Liu
description: Zhijian Liu is an Assistant Professor at UC San Diego. His research focuses on efficient machine learning and systems.

Technology

CDN: Cloudflare

Social

Registration

Registrar

Cloudflare, Inc.

Created

2017-01-25

Expires

2034-01-25 2806 days left

Updated

2025-01-29

Name servers

michelle.ns.cloudflare.com
simon.ns.cloudflare.com

DNS records live

NS

michelle.ns.cloudflare.com
simon.ns.cloudflare.com

MX

1 smtp.google.com

Verified for

Google

Email authentication strong

SPF

v=spf1 include:_spf.google.com ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; pct=100;

policy: reject (enforced)

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxhNO5EUKZg1ypkvkxK8Sv+C4Hsf7qgP3i1jxXwNYwbMeqWzd+M+IAhq2F/w/9LRd/UHNoH/cW4apBb…

selectors probed

Certificate (current)

WE1

from 2026-04-24 to 2026-07-23

Expires in 64 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://zhijianliu.com/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy