Protect your reputationreputation
Before hackers destroy IT
Bolwerk is Dutch for stronghold. Your vibe coded apps need one. We monitor certificate logs, DNS records, and open endpoints around the clock, so you know what's exposed before someone exploits it.
How it works
From setup to first findings in three steps
Continuous scanning
Enter your domain and we start right away. We track certificate transparency logs, DNS records, and exposed ports to catch every signal related to your infrastructure.
Only what matters
No daily digests filling your inbox. We stay quiet until something actually needs your attention. Every alert includes a severity rating and clear next steps.
New certificate detected
api.example.com
Webhook
Ready
Ready
Delivered in seconds
Critical findings reach you within seconds via email or webhook. Act on issues before they escalate.
What others miss, we find
Your domains reveal more than you think. From certificates to subdomains, we surface what an outsider can discover about you.
Certificates issued without your approval
Certificates nearing expiration dates
Certificates that have been revoked
Missing certificate transparency entries
Look-alike domains targeting your brand
Unknown subdomains and services
Outdated or vulnerable cryptography
Insecure TLS settings and protocols
Your full attack surface
Certificate monitoring is where we started. We're now expanding to cover everything that's externally visible about your infrastructure.
Vulnerability Scanning
We scan your applications for known CVEs, misconfigurations, and weak spots across your stack.
Port & Service Discovery
We map which services and ports are reachable from outside. Continuously, not as a one-off.
Data Exposure Detection
We hunt for databases, API keys, and configuration files that accidentally ended up public.
Security Header Analysis
We check your HTTP headers for missing protections like CSP, HSTS, and X-Frame-Options.
DNS Security Monitoring
We track DNS changes, detect hijacking attempts, and flag dangling records.
Compliance Checking
We automatically test your configuration against industry security standards and best practices.
Why Bolwerk
In Dutch, a bolwerk is a bastion: a fortified wall, a line of defense. Something that protects and holds its ground.
Built before the attack, not after.