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Search Passive-DNS , found 7 results

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OSINT External Reconnaissance

conducting-external-reconnaissance-with-osint

mukul975/Anthropic-Cybersecurity-Skills

Uses OSINT techniques to map an organization’s external attack surface without hitting any systems directly; aggregates DNS, certificate, breach, social media, and cloud data for passive reconnaissance before penetration tests or red team engagements.

DNS Exfiltration Detection

detecting-dns-exfiltration-with-dns-query-analysis

mukul975/Anthropic-Cybersecurity-Skills

Detects DNS tunneling exfiltration by analyzing passive DNS logs for anomalous query entropy, volumes, subdomain length, TXT abuse, and response payloads with statistical and ML techniques to alert on covert data leakage.

Zeek Network Anomaly Detection

detecting-network-anomalies-with-zeek

mukul975/Anthropic-Cybersecurity-Skills

Deploys Zeek to passively monitor network traffic, emit structured connection/DNS/HTTP/SSL logs, and run custom scripts that flag anomalous behavior for threat hunting and incident response teams.

DNS Persistence Hunting

hunting-for-dns-based-persistence

mukul975/Anthropic-Cybersecurity-Skills

Hunt DNS persistence by exporting zone baselines, querying SecurityTrails passive history, and auditing provider logs to spot hijacks, dangling records, and unauthorized delegations.

API Inventory And Discovery

performing-api-inventory-and-discovery

mukul975/Anthropic-Cybersecurity-Skills

Performs API inventory and discovery via passive traffic analysis, active scans, DNS/JavaScript enumeration, and cloud inventories to catalog documented, undocumented, shadow, zombie, and deprecated endpoints ahead of security assessments or compliance checks.

Subdomain Enumeration Workflow

performing-subdomain-enumeration-with-subfinder

mukul975/Anthropic-Cybersecurity-Skills

Leverage ProjectDiscovery's Subfinder in passive mode to collect and validate target subdomains, tune source selection and rate limits, and pipe results through httpx/dnsx or downstream scanners for pentesting, bug bounty, or attack-surface mapping engagements.

Threat Actor Infrastructure Tracking

tracking-threat-actor-infrastructure

mukul975/Anthropic-Cybersecurity-Skills

Tracking Threat Actor Infrastructure uses Shodan, Censys, passive DNS, CT logs, WHOIS, and network fingerprinting to discover, map, and pivot across adversary-controlled servers and domains, letting analysts detect new C2 nodes and phishing sites earlier.

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