Phishing remains one of the most persistent threats facing organizations today. According to recent reports, phishing attacks account for over 80% of reported security incidents, with the average cost of a data breach reaching millions of dollars. The challenge isn’t just detecting phishing—it’s detecting it fast enough to protect your customers, your brand, and your bottom line.

The StalkPhish API provides security teams with programmatic access to a continuously updated database of phishing threats, complete with enriched metadata, threat intelligence, and advanced search capabilities. But what does that mean in practice?

Let’s explore eight concrete use cases where the StalkPhish.io API delivers measurable value.

1. Brand Protection and Impersonation Detection

Relevant endpoints: /search/brand/, /search/url/, /search/title/

Your brand is one of your most valuable assets—and cybercriminals know it. Brand impersonation attacks don’t just steal credentials; they erode customer trust and damage your reputation.

With StalkPhish, security teams can continuously monitor for unauthorized use of their brand across phishing infrastructure. By querying brand names, product names, and corporate keywords across URLs and page titles, you can identify impersonation campaigns before they reach your customers.

The temporal filters (last_hours, last_days) enable real-time alerting workflows. When a new phishing site targeting your brand appears, you can trigger immediate takedown procedures—often shutting down attacks within hours rather than days.

Example query:

curl -H "Authorization: Token YOUR_TOKEN" \
  "https://api.stalkphish.io/api/v1/search/brand/YourBrand?last_hours=24"

2. SOC/SIEM Enrichment for Faster Triage

Relevant endpoints: /search/url/, /search/ipv4/

Every minute an analyst spends manually researching a suspicious URL is a minute not spent on actual threats. The StalkPhish API integrates directly into your existing security stack—Splunk, QRadar, Elastic, Microsoft Sentinel—to automatically enrich indicators of compromise (IOCs).

When your detection rules flag a suspicious URL or IP address, the API instantly returns context: ASN information, targeted brand, kit family, and historical sightings. This transforms a generic alert into actionable intelligence.

The result? Analysts can triage alerts in seconds instead of minutes, focusing their expertise on incidents that truly require human judgment.

Integration benefit: Reduce mean time to qualification (MTTQ) from 5+ minutes to under 30 seconds per alert.

3. Threat Hunting Across Malicious Infrastructure

Relevant endpoints: /search/ipv4/, /search/favicon/, /search/zipfilehash/

Threat actors rarely operate in isolation. A single phishing domain is often part of a larger infrastructure—multiple domains sharing the same IP, the same favicon, the same domain or the same phishing kit.

StalkPhish enables threat hunters to pivot across these technical indicators:

• IP pivoting: Discover all phishing domains hosted on a suspicious IP address
• Favicon hash search: The MMH3 hash of a favicon can reveal dozens of related phishing sites, even when domains and IPs change
• Kit hash correlation: Identify all deployments of a specific phishing kit across your entire threat landscape

This approach transforms isolated indicators into comprehensive infrastructure maps, revealing the full scope of an adversary’s operations.

Pro tip: Combine favicon hash searches with temporal filters to track how a threat actor’s infrastructure evolves over time.

4. Email/Telegram Exfiltration Channel Detection

Relevant endpoint: /search/telegram/

Modern phishing kits increasingly rely on Telegram bots and channels to exfiltrate stolen credentials in real time, or still use mailboxes. Unlike traditional email drops, Telegram provides attackers with instant notifications, easy automation, and perceived anonymity.

StalkPhish extracts Telegram bot usernames and channel references directly from phishing kits, creating a unique intelligence layer. Security teams can:

• Request platform takedowns: Report malicious bots to Telegram for removal
• Track actor activity: The same bot username across multiple campaigns often indicates a single threat actor
• Alert potential victims: Identify which brands and campaigns are feeding specific exfiltration channels

This capability is particularly valuable for financial institutions and e-commerce platforms where stolen credentials are monetized within minutes.

Example query:

curl -H "Authorization: Token YOUR_TOKEN" \
  "https://api.stalkphish.io/api/v1/search/telegram/phish_bot?last_days=30"

5. Customer Protection for Financial Services and E-Commerce

Relevant endpoints: /search/url/, /search/title/, /last

Banks, payment processors, and online retailers face a constant stream of phishing attacks targeting their customers. The StalkPhish API enables proactive protection at multiple touchpoints:

• Transaction screening: Flag or block transactions originating from known phishing referrers
• Mobile app protection: Warn users attempting to access phishing URLs through your application
• DNS/Proxy blocklists: Continuously update corporate network blocklists with fresh phishing URLs

The /last endpoint provides a real-time feed of newly detected phishing URLs, ensuring your defenses stay current against fast-moving campaigns.

Business impact: Reduce account takeover (ATO) fraud losses while demonstrating due diligence to regulators and auditors.

6. Post-Incident Forensics and Investigation

Relevant endpoints: /search/email/, /search/zipfilehash/

When a phishing attack succeeds, the investigation is just beginning. Understanding the full scope of a campaign is critical for incident response, victim notification, and potential legal action.

StalkPhish supports forensic investigations by enabling searches across:

• Drop emails: The email addresses where stolen credentials are sent can link multiple campaigns to the same actor
• Kit hashes: Identify all domains that deployed the same phishing kit, revealing additional victims and attack vectors

This intelligence helps incident responders answer critical questions: How widespread was this campaign? Are there other victims we haven’t identified? What can we document for law enforcement?

Compliance benefit: Comprehensive forensic documentation supports regulatory reporting requirements and potential litigation.

7. Threat Intelligence Platform Integration (OpenCTI, MISP)

Relevant endpoints: /last, all /search/* endpoints

Threat intelligence is most valuable when it’s shared, correlated, and actionable. The StalkPhish API enables automated ingestion into leading CTI platforms like OpenCTI, MISP, and ThreatConnect.

Connectors can periodically pull fresh phishing URLs along with enriched metadata—ASN, targeted brand, phishing score, kit family—to create structured threat objects (STIX, OpenIOC). This enables:

• Community sharing: Contribute to collective defense through automated indicator sharing
• Cross-source correlation: Link phishing infrastructure to other threat data (malware, C2 servers, threat actors)
• Trend analysis: Track phishing volume, targeted brands, and infrastructure patterns over time

Integration example: A scheduled job queries /last every hour, creates STIX bundles, and pushes them to OpenCTI for correlation with existing intelligence.

8. Real-Time Transaction Risk Scoring

Relevant endpoint: /search/url/

Fraud prevention isn’t just about blocking known bad actors—it’s about understanding the context of every transaction. The StalkPhish API adds a powerful signal to your risk scoring models.

When a user initiates a sensitive action (login, password reset, payment), your fraud engine can check whether the referring URL or any URLs in the user’s recent session are known phishing sites. The API’s phishing_score provides a normalized risk indicator that integrates directly into your scoring logic.

High-risk sessions can trigger additional friction—step-up authentication, transaction delays, or manual review—without blocking legitimate users.

Example workflow:

1. User clicks link in email, lands on your site
2. Your fraud engine extracts the referrer URL
3. API query returns phishing_score: 85 and targeted_brand: YourBrand
4. Transaction is flagged for additional verification

Getting Started

The StalkPhish API offers flexible subscription tiers to match your use case:

All tiers include URL, IP, and domain search. Higher tiers unlock additional capabilities: title search, email extraction, brand detection, Telegram intelligence, and favicon/kit hash correlation.

Conclusion

Phishing detection is no longer optional—it’s a core security capability. The StalkPhish API provides the building blocks for comprehensive anti-phishing operations: from real-time brand monitoring to deep forensic investigations, from SOC automation to customer protection.

The question isn’t whether you need phishing intelligence. It’s how quickly you can operationalize it.

Ready to get started? Create your free account and start exploring the API today. For enterprise integrations, contact our team to discuss your requirements.

StalkPhish.io is an advanced fraud, phishing, and brand impersonation detection platform helping organizations detect threats faster and protect what matters most.