DarkWebSonar vs Passguard

DarkWebSonar is a paid web and API service for monitoring dark-web activity and breach exposure. It watches ransomware groups, Telegram channels, data leaks, breach repositories, and underground forums, sending real-time alerts when an organization is mentioned. AI-filtered intelligence includes contextual risk scores based on threat-actor reputation and data sensitivity. Coverage includes DDoS campaigns, defacements, early attack chatter, ransomware victim announcements, and pre-extortion warnings on leak blogs. Checks cover domains, email credentials, infostealer logs, and stolen-data leaks. Lookalike-domain monitoring identifies typosquatting and phishing or impersonation signals. Integrations include Slack, Microsoft Teams, PagerDuty, ServiceNow, custom webhooks, and an MCP server; Splunk is marked coming soon. Plans start at $49/mo, with a 14-day trial and no free plan. The trial includes keyword and actor monitoring plus one-time domain breach and infostealer checks; passwords remain masked.

Passguard is a web and API platform for monitoring infostealer activity connected to company domains and other verified assets. It looks for infected devices and stolen sessions on criminal marketplaces, then checks whether stolen access is still active; the company says it revokes active access before it can be abused. The platform presents infections, traces, target lists, cracked passwords, breaches and leaks, with alerts and reports for investigations. Monitoring begins after assets are verified, with no agent installation or access to customer systems required, according to Passguard. Its REST API offers thirteen endpoints per domain for SIEM, SOAR or product integrations, and a mock server provides synthetic data for development without a key. Passguard says customer data is hosted in the European Union on European infrastructure, it is GDPR compliant, and it never pays cybercriminals for data; ISO 27001 certification is in progress. There is no free plan, but a quick scan is available without signup and a team-led proof of concept can use a customer's assets. The Essential plan costs €250 a month on an annual contract, excluding VAT. API access is listed at €1,500 a month.