Protect your reputationreputationBefore 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 one domain to a full picture of what you expose, in three steps
Discover every host
Enter one domain and we map the rest. Certificate Transparency logs reveal every subdomain that has ever had a certificate, including the ones nobody remembers setting up.
Visit every site
Each host is opened in a real browser, the way a visitor sees it. We check its certificate, security headers and DNS, and record every request the page makes.
Catch leaked secrets
We read the JavaScript, JSON and source maps your sites serve and flag API keys and tokens that should never be public. Values are shown masked, and AI analysis tells you which ones matter.
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Certificates that have been revoked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Outdated or vulnerable cryptography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.
MCP Servers
Connect your AI tools directly to Bolwerk via the Model Context Protocol and query your attack surface in natural language.
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.