diigo.com

Diigo - Better reading and research with annotation, highlighter, sticky notes, archiving, bookmarking & more.

Overview

• Status: alive
• First seen: 2026-09-21
• Last crawled: 2026-09-22
• Security grade: F (30/100)
• TLS certificate expires: 2027-04-06
• Inbound links seen: 3

Security & email signals

• ✓ HTTPS
• ✗ HSTS
• ✗ Content-Security-Policy
• ✗ X-Content-Type-Options
• ✗ X-Frame-Options
• ✗ Referrer-Policy
• ✗ Permissions-Policy
• ✓ SPF record
• ✗ DMARC record
• ✗ DKIM record
• ✗ Cookies set securely
• ✓ Has real content (not an empty shell)
• ✓ Valid TLS certificate

Detected technology

Platform & framework: jQuery

Infrastructure: Nginx

Recent changes

• 2026-09-22 — TLS expiry changed from "2027-04-06" to "2027-04-06"
• 2026-09-22 — TLS expiry changed from "2027-04-06" to "2027-04-06"

This profile is generated automatically from passive, publicly observable data. Think something here is wrong or want this profile removed? See /bot.