Defen.so - Uptime & Security

Defenso Alerts is the companion app for Defen.so, security and uptime monitoring for the sites and apps you just shipped. Connect a phone in seconds and get uptime, attack, and vulnerability alerts for every site you protect, with a call-style alarm you cannot sleep through.

WHY IT EXISTS

When a production site goes down or comes under attack at 3 AM, a quiet push notification is not enough. Defenso Alerts rings like an incoming call until you stop it, so the one alert that matters actually wakes you. Email gets buried and Slack gets muted at night. This does not.

WHAT YOU GET

Three lights per site, uptime, attacks and vulnerabilities at a glance
Off / Notify / Noisy per event, you decide which alerts ring and which stay silent
Call-style noisy alarm, a loud siren that keeps going until you press stop
7-day uptime bars and a live activity log on every site card
All your monitored sites in one place on your phone
Connect in seconds, scan a QR or type a 6-character code from your dashboard, no email or password on the phone
Per-site control, disconnect a single site without disconnecting the phone
Dark and light themes that follow your system

WHAT IT ALERTS YOU ABOUT

A website or app going down, from multi-region uptime checks
A site coming under attack, blocked SQL injection, XSS, bot floods and credential stuffing
SSL certificates about to expire before the padlock turns red
Domain names about to expire
Exposed ports and services that should not be reachable, like an open database port
New security vulnerabilities found in a scan, each with a fix
A leaked API key or secret committed to a repo

WHO IT IS FOR

Solo founders watching their own production apps overnight
Developers and vibe coders shipping fast with AI editors like Cursor, Claude Code and Windsurf
Agencies and freelancers monitoring many client sites from one phone
On-call and DevOps engineers who need an alert louder than a notification
WordPress owners, API builders and SaaS teams whose site cannot quietly go down

HOW IT WORKS

Add and configure your sites in the Defen.so dashboard, then connect this app with a QR or 6-character code. Choose per site and per event whether each alert stays silent, sends a notification, or triggers the full alarm. The phone becomes the loud last line so nothing critical slips past at night. Alerts also reach you on Slack, Discord, Telegram, email and webhooks, this app is the one that makes noise.

COMMON USES

Website down alert and server downtime monitoring for production apps
Uptime monitoring and status tracking across multiple sites
SSL certificate expiry reminder and domain expiry reminder
Web application firewall and attack alerts for APIs and login pages
Port monitoring to catch an exposed database or service
Vulnerability and security scan alerts for websites and web apps
On-call incident alerts with a loud alarm for small teams and solo developers
Agency monitoring dashboard for client websites in one place

FREQUENTLY ASKED

Do I need an account? Yes, a Defen.so account, with a free tier, runs the monitoring. This app receives and sounds the alerts.

Does it work for any website? Yes, any site or app you add in Defen.so, on any stack, WordPress, Next.js, Laravel, Django, Rails and more.

Will it really wake me up? That is the point. The noisy mode is a full siren that keeps ringing until you stop it, not a single quiet buzz.

Can I monitor many sites? Yes, add as many sites as your plan allows and see them all on one phone, each with its own alert settings.

PRIVACY FIRST

The phone holds only a revocable device token, never your account credentials. We ask for one permission, notifications, and optionally the camera to scan the connect QR. No contacts, no location, no tracking, no ads.

Requires a Defen.so account, free tier available. Get started at app.defen.so.