Description

This curriculum spans the design, operation, and governance of phishing detection and response in a security operations center, comparable in scope to a multi-workshop program that integrates technical rule development, incident response automation, threat hunting, and cross-functional coordination across IT, legal, and executive teams.

Module 1: Understanding the Phishing Threat Landscape in SOC Operations

Decide which phishing indicators (e.g., SPF/DKIM/DMARC failures, suspicious sender domains, URL anomalies) to prioritize based on historical incident data and organizational email traffic patterns.
Integrate threat intelligence feeds from commercial and open-source providers to enrich phishing detection rules with up-to-date IOCs and TTPs.
Configure email gateway logs to forward metadata (headers, sender IP, recipient list) to the SIEM with consistent field naming for correlation purposes.
Evaluate the operational cost of false positives when tuning detection thresholds for mass versus targeted phishing campaigns.
Map common phishing attack chains (delivery → weaponization → exploitation → C2) to MITRE ATT&CK techniques for consistent incident classification.
Assess the risk of business email compromise (BEC) scenarios by reviewing past phishing attempts targeting executive accounts and finance departments.

Module 2: Designing Detection Rules for Phishing in SIEM and SOAR Platforms

Develop correlation rules that trigger alerts when multiple users click on the same malicious URL within a short time window.
Implement regex patterns to detect obfuscated URLs in email bodies, including shorteners, IP-based links, and homograph domains.
Adjust rule severity based on sender reputation scores and recipient role (e.g., higher severity for privileged users).
Balance detection sensitivity by tuning thresholds for bulk email alerts to avoid alert fatigue during large-scale campaigns.
Validate detection logic by replaying historical phishing emails through the SIEM to measure rule coverage and false negative rates.
Coordinate with email security teams to ensure EDR and proxy logs are synchronized with email gateway timestamps for timeline accuracy.

Module 3: Incident Response Playbooks for Phishing Events

Define playbook triggers that differentiate between user-reported phishing, automated detection, and threat intel-based alerts.
Automate initial containment steps such as quarantining malicious emails across mailboxes using API integrations with email platforms.
Standardize the process for extracting and submitting suspicious URLs and attachments to sandbox environments for dynamic analysis.
Specify escalation paths based on impact level, such as involving identity teams if credential theft is confirmed.
Document evidence collection procedures to preserve email headers, user click logs, and endpoint telemetry for forensic review.
Integrate SOAR workflows with ticketing systems to ensure auditability and prevent response task duplication.

Module 4: User Reporting Mechanisms and SOC Integration

Deploy and configure a phishing reporting button in email clients, ensuring reported messages are routed to a dedicated ingestion mailbox.
Implement parsing scripts to extract metadata from user-reported emails and inject it into the SIEM as security events.
Establish SLAs for SOC analysts to triage user-reported emails, balancing speed with thoroughness of analysis.
Design feedback loops to inform users whether their report was valid, reducing underreporting due to lack of response.
Monitor reporting rates by department to identify teams requiring additional awareness training or communication.
Prevent abuse of the reporting system by filtering out false reports through automated validation checks (e.g., known benign senders).

Module 5: Phishing Simulation and Red Teaming Integration

Select simulation templates that reflect current threat actor tactics, such as invoice scams or credential harvesting pages.
Coordinate simulation timing to avoid conflicts with real incidents or major organizational events.
Isolate simulation traffic to prevent accidental triggering of external threat intel sharing mechanisms.
Map user click behavior during simulations to individual risk profiles for targeted coaching.
Share simulation results with the SOC to validate detection coverage and adjust rules based on missed campaigns.
Deconflict red team phishing activities with ongoing security monitoring to prevent unnecessary incident escalations.

Module 6: Threat Hunting for Undetected Phishing Campaigns

Query proxy logs for connections to newly registered domains that match sender domains in recent email traffic.
Search for failed authentication spikes following suspected credential phishing emails to detect account takeover attempts.
Correlate user-reported emails that did not trigger automated alerts to identify detection gaps.
Use DNS query logs to detect beaconing behavior from compromised endpoints post-phishing.
Conduct retrospective analysis of inbox delivery logs to uncover emails that bypassed filtering but contained malicious payloads.
Develop custom YARA rules to scan email attachment repositories for weaponized document patterns.

Module 7: Metrics, Reporting, and Continuous Improvement

Define KPIs such as mean time to detect (MTTD) and mean time to respond (MTTR) for phishing incidents across detection vectors.
Generate monthly reports showing detection efficacy by rule type, including false positive and false negative counts.
Track user reporting rates and time-to-report to assess the effectiveness of awareness initiatives.
Conduct post-incident reviews for major phishing breaches to update playbooks and detection logic.
Align phishing metrics with executive risk dashboards, translating technical data into business impact terms.
Rotate detection rule logic quarterly to adapt to evolving attacker obfuscation techniques.

Module 8: Governance, Compliance, and Cross-Functional Coordination

Establish data handling policies for phishing investigations that comply with privacy regulations (e.g., GDPR, CCPA).
Define roles and responsibilities between SOC, IT, legal, and communications teams during phishing incidents with external implications.
Document retention policies for phishing-related logs and user reports to meet audit requirements.
Coordinate with HR to address repeat clickers through coaching rather than punitive measures.
Review third-party vendor email security controls during procurement to ensure alignment with internal standards.
Participate in tabletop exercises with executive leadership to test communication and decision-making during large-scale phishing events.