[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M6AET7HXVXSSGG15JWWRT7S2":3,"skill-same:01M6AET7HXVXSSGG15JWWRT7S2":152},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":16,"categories":17,"keywords":18,"publishedAt":39,"linkOnly":40,"markdownContent":41,"markdownBody":42,"frontMatter":43,"refName":79,"commitSha":80,"skillDirectory":81,"forksCount":82,"repositoryHtmlUrl":83,"repositoryHomepageUrl":84,"ownerHtmlUrl":85,"ownerBlogUrl":86,"ownerDescription":87,"updatedAt":88,"install":89,"resources":102},"01M6AET7HXVXSSGG15JWWRT7S2","hunting-credential-stuffing-attacks",null,"Detects credential stuffing attacks by analyzing authentication logs for login velocity anomalies, ASN diversity, password spray patterns, and geographic distribution of failed logins. Uses statistical analysis on Splunk or raw log data. Use when investigating account takeover campaigns or building detection rules for auth abuse.","mukul975\u002FAnthropic-Cybersecurity-Skills","mukul975","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F42860185?v=4","01M6ADEQR8T5M4EEG6C67BQCWF","Mahipal","01M6ADJPMYWG1E5GM1FWBE3128",35990,"Apache-2.0","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhunting-credential-stuffing-attacks\u002FSKILL.md",[],[19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38],"hunting credential stuffing attacks","detection","asn-analysis","login-anomaly","authentication-logs","t1059","t1078","t1003","account-takeover","credential-stuffing","security","data","analyzing","splunk","threat-hunting","security-operations","logs","authentication","auth","cybersecurity","2026-11-10 10:12:30",false,"---\nname: hunting-credential-stuffing-attacks\ndescription: 'Detects credential stuffing attacks by analyzing authentication logs\n  for login velocity anomalies, ASN diversity, password spray patterns, and geographic\n  distribution of failed logins. Uses statistical analysis on Splunk or raw log data.\n  Use when investigating account takeover campaigns or building detection rules for\n  auth abuse.\n\n  '\ndomain: cybersecurity\nsubdomain: security-operations\ntags:\n- credential-stuffing\n- authentication-logs\n- login-anomaly\n- asn-analysis\n- threat-hunting\n- account-takeover\nversion: '1.0'\nauthor: mahipal\nlicense: Apache-2.0\nnist_csf:\n- DE.CM-01\n- RS.MA-01\n- GV.OV-01\n- DE.AE-02\nmitre_attack:\n- T1078\n- T1190\n- T1059\n- T1003\n- T1110\nmitre_f3:\n  version: '1.1'\n  tactics:\n  - initial-access\n  - positioning\n  techniques:\n  - id: T1110.004\n    name: 'Brute Force:  Credential Stuffing'\n    tactic: initial-access\n    source: attack\n  - id: T1110.003\n    name: 'Brute Force: Password Spraying'\n    tactic: initial-access\n    source: attack\n  - id: F1006.002\n    name: 'Account Takeover: Exposed Login Credential'\n    tactic: initial-access\n    source: f3\n  - id: F1006\n    name: Account Takeover\n    tactic: initial-access\n    source: f3\n---\n\n# Hunting Credential Stuffing Attacks\n\n\n## When to Use\n\n- When investigating security incidents that require hunting credential stuffing attacks\n- When building detection rules or threat hunting queries for this domain\n- When SOC analysts need structured procedures for this analysis type\n- When validating security monitoring coverage for related attack techniques\n\n## Prerequisites\n\n- Familiarity with security operations concepts and tools\n- Access to a test or lab environment for safe execution\n- Python 3.8+ with required dependencies installed\n- Appropriate authorization for any testing activities\n\n## Instructions\n\nAnalyze authentication logs to detect credential stuffing by identifying patterns\nof distributed login failures, high IP diversity, and suspicious ASN distribution.\n\n```python\nimport pandas as pd\nfrom collections import Counter\n\n# Load auth logs\ndf = pd.read_csv(\"auth_logs.csv\", parse_dates=[\"timestamp\"])\n\n# Credential stuffing indicator: many IPs trying few accounts\nip_per_account = df[df[\"status\"] == \"failed\"].groupby(\"username\")[\"source_ip\"].nunique()\naccounts_under_attack = ip_per_account[ip_per_account > 50]\n```\n\nKey detection indicators:\n1. High unique source IPs per failed username\n2. Low success rate across many accounts (\u003C 1%)\n3. ASN concentration from cloud\u002Fproxy providers\n4. Geographic impossibility (same account, distant locations)\n5. User-agent uniformity across distributed IPs\n\n## Examples\n\n```python\n# Password spray: one password tried across many accounts\nspray = df[df[\"status\"] == \"failed\"].groupby([\"source_ip\", \"password_hash\"]).agg(\n    accounts=(\"username\", \"nunique\")).reset_index()\nsprays = spray[spray[\"accounts\"] > 10]\n```\n","# Hunting Credential Stuffing Attacks\n\n\n## When to Use\n\n- When investigating security incidents that require hunting credential stuffing attacks\n- When building detection rules or threat hunting queries for this domain\n- When SOC analysts need structured procedures for this analysis type\n- When validating security monitoring coverage for related attack techniques\n\n## Prerequisites\n\n- Familiarity with security operations concepts and tools\n- Access to a test or lab environment for safe execution\n- Python 3.8+ with required dependencies installed\n- Appropriate authorization for any testing activities\n\n## Instructions\n\nAnalyze authentication logs to detect credential stuffing by identifying patterns\nof distributed login failures, high IP diversity, and suspicious ASN distribution.\n\n```python\nimport pandas as pd\nfrom collections import Counter\n\n# Load auth logs\ndf = pd.read_csv(\"auth_logs.csv\", parse_dates=[\"timestamp\"])\n\n# Credential stuffing indicator: many IPs trying few accounts\nip_per_account = df[df[\"status\"] == \"failed\"].groupby(\"username\")[\"source_ip\"].nunique()\naccounts_under_attack = ip_per_account[ip_per_account > 50]\n```\n\nKey detection indicators:\n1. High unique source IPs per failed username\n2. Low success rate across many accounts (\u003C 1%)\n3. ASN concentration from cloud\u002Fproxy providers\n4. Geographic impossibility (same account, distant locations)\n5. User-agent uniformity across distributed IPs\n\n## Examples\n\n```python\n# Password spray: one password tried across many accounts\nspray = df[df[\"status\"] == \"failed\"].groupby([\"source_ip\", \"password_hash\"]).agg(\n    accounts=(\"username\", \"nunique\")).reset_index()\nsprays = spray[spray[\"accounts\"] > 10]\n```\n",{"name":5,"tags":44,"author":45,"domain":38,"license":15,"version":46,"mitre_f3":47,"nist_csf":67,"subdomain":34,"description":72,"mitre_attack":73},[28,23,22,21,33,27],"mahipal","1.0",{"tactics":48,"version":51,"techniques":52},[49,50],"initial-access","positioning","1.1",[53,57,60,64],{"id":54,"name":55,"source":56,"tactic":49},"T1110.004","Brute Force:  Credential Stuffing","attack",{"id":58,"name":59,"source":56,"tactic":49},"T1110.003","Brute Force: Password Spraying",{"id":61,"name":62,"source":63,"tactic":49},"F1006.002","Account Takeover: Exposed Login Credential","f3",{"id":65,"name":66,"source":63,"tactic":49},"F1006","Account Takeover",[68,69,70,71],"DE.CM-01","RS.MA-01","GV.OV-01","DE.AE-02","Detects credential stuffing attacks by analyzing authentication logs for login velocity anomalies, ASN diversity, password spray patterns, and geographic distribution of failed logins. Uses statistical analysis on Splunk or raw log data. Use when investigating account takeover campaigns or building detection rules for auth abuse.\n",[74,75,76,77,78],"T1078","T1190","T1059","T1003","T1110","main","54a798831d2266a3ca61ce68a7acb80b81160d57","skills\u002Fhunting-credential-stuffing-attacks",4395,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills","https:\u002F\u002Fmahipal.engineer\u002FAnthropic-Cybersecurity-Skills\u002F","https:\u002F\u002Fgithub.com\u002Fmukul975","Mahipal.engineer","🔐 Cybersecurity | 💻 Dev | 📷 Street Photographer\r\n🎓 MSc | 📚 Research & AI Security","2026-08-31 12:32:44",{"source":8,"skillName":5,"commands":90,"prompt":100,"zipAvailable":101},[91,94,97],{"tool":92,"command":93},"npx","npx skills add mukul975\u002FAnthropic-Cybersecurity-Skills --skill hunting-credential-stuffing-attacks",{"tool":95,"command":96},"bunx","bunx skills add mukul975\u002FAnthropic-Cybersecurity-Skills --skill hunting-credential-stuffing-attacks",{"tool":98,"command":99},"pnpm","pnpm dlx skills 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artifact signatures and SLSA provenance using Sigstore's cosign (verify, verify-attestation, verify-blob-attestation) and slsa-verifier (verify-artifact), enforcing keyless OIDC builder identity and source repo against SLSA Build levels. Use in CI\u002FCD before deploying artifacts, when consuming third-party attestations, establishing a SLSA Build L3 pipeline, or confirming provenance during incident response or admission control.","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fverifying-build-provenance-with-slsa-sigstore\u002FSKILL.md",[159],{"categoryNo":160,"categoryName":161,"taxonomyType":162,"taxonomyTypeDesc":163},"01JBSEEDCAT000000000000023","Skill与智能体开发","SCENARIO","使用场景",[165,166,167,168,29,38,169,170,171,172,173,174,175,176,177,178,179,180,181,182],"sigstore","provenance","slsa","verifying build provenance with slsa sigstore","incident response","identity","pr","code","artifacts","ci","supply-chain","pipeline","supply-chain-security","t1195","attestation","code-signing","cosign","keyless",{"skillNo":184,"name":185,"nameZh":6,"description":186,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":187,"categories":188,"keywords":190,"publishedAt":39},"01M6AGDGBPWYVZ2F11GFKJ4HZ9","validating-tpm-measured-boot-attestation","Verifies TPM 2.0 measured-boot integrity and remote attestation with tpm2-tools -- reading PCRs (tpm2_pcrread), replaying the boot event log, generating and checking signed quotes (tpm2_quote\u002Ftpm2_checkquote), and sealing secrets to a PCR policy. Use to confirm a system booted trusted firmware\u002Fkernel for Zero Trust device posture, detect boot-chain tampering via PCR drift, or build a golden-value baseline for fleet attestation.","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fvalidating-tpm-measured-boot-attestation\u002FSKILL.md",[189],{"categoryNo":160,"categoryName":161,"taxonomyType":162,"taxonomyTypeDesc":163},[191,179,192,193,29,194,38,171,195,196,197,198,199,200,201,202,203,204,205,206],"boot","TPM","validating tpm measured boot attestation","policy","verification","ZeRO","firmware","Tools","measured-boot","PCR","integrity","secrets","remote-attestation","tpm2-tools","integrity-verification","trusted-computing",{"skillNo":208,"name":209,"nameZh":6,"description":210,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":211,"categories":212,"keywords":217,"publishedAt":39},"01M6AGDCW0Y4FXZ3362GT1941M","validating-backup-integrity-for-recovery","Validates backup integrity through cryptographic hash verification, automated restore testing, corruption detection, and recoverability checks to confirm backups are reliable for disaster recovery and ransomware response. Use before relying on backups for recovery, when building post-backup validation pipelines, auditing backup infrastructure for compliance, or checking immutable\u002Fair-gapped backups for silent corruption or tampering.","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fvalidating-backup-integrity-for-recovery\u002FSKILL.md",[213,216],{"categoryNo":214,"categoryName":215,"taxonomyType":162,"taxonomyTypeDesc":163},"01JBSEEDCAT000000000000008","测试与质量",{"categoryNo":160,"categoryName":161,"taxonomyType":162,"taxonomyTypeDesc":163},[201,218,219,220,221,38,222,223,195,224,225,226,227,228,20,25,229,230,231,232],"backup","recovery","validating backup integrity for recovery","testing","infrastructure","validation","compliance","hash-verification","incident-response","ransomware","cryptocurrency","t1490","immutable","disaster-recovery","restore-testing",{"skillNo":234,"name":235,"nameZh":6,"description":236,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":237,"categories":238,"keywords":240,"publishedAt":39},"01M6AGD9GBG2KZ336AE763J3WH","triaging-windows-with-kape","Runs KAPE (Kroll Artifact Parser and Extractor) to collect targeted forensic artifacts (registry hives, $MFT, event logs, prefetch, browser data) via Targets and parse them with Modules wrapping Eric Zimmerman's EZ Tools (PECmd, MFTECmd, RECmd). Use during early incident containment\u002Ftriage when full disk imaging is impractical but a defensible, parseable Windows artifact set is needed quickly, including at-scale remote collection.","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Ftriaging-windows-with-kape\u002FSKILL.md",[239],{"categoryNo":160,"categoryName":161,"taxonomyType":162,"taxonomyTypeDesc":163},[241,242,243,38,244,245,35,246,247,248,249,30,250,251,252,253,198,254,255,256],"windows","kape","triaging windows with kape","registry","browser","windows-forensics","dfir","mft","mftecmd","prefetch","eric-zimmerman","digital-forensics","SET","collection","pecmd","artifact-collection",{"skillNo":258,"name":259,"nameZh":6,"description":260,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":261,"categories":262,"keywords":264,"publishedAt":39},"01M6AGD5PW5J4EVZM958WD74ZQ","triaging-vulnerabilities-with-ssvc-framework","Triages and prioritizes vulnerabilities with CISA's Stakeholder-Specific Vulnerability Categorization (SSVC) decision tree, weighing exploitation status (via the CISA KEV catalog and FIRST EPSS API), technical impact, automatability, and mission prevalence to output Track\u002FTrack*\u002FAttend\u002FAct decisions. Use when prioritizing vulnerability scan results (OpenVAS, Nessus, Qualys) for remediation planning beyond raw CVSS scores.","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Ftriaging-vulnerabilities-with-ssvc-framework\u002FSKILL.md",[263],{"categoryNo":160,"categoryName":161,"taxonomyType":162,"taxonomyTypeDesc":163},[265,266,267,38,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283],"vulnerabilities","framework","triaging vulnerabilities with ssvc framework","status","planning","CISA","vulnerability-management","risk-management","nessus","qualys","openvas","cvss","remediation","risk","vulnerability","api","prioritization","ssvc","decision-tree",{"skillNo":285,"name":286,"nameZh":6,"description":287,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":288,"categories":289,"keywords":291,"publishedAt":39},"01M6AGD24TTQQM4CXG69E3B9TJ","triaging-security-incident","Performs initial triage of security incidents using the NIST SP 800-61r3 and SANS PICERL frameworks, classifying incident type, assigning priority by business impact, and routing to the appropriate response team. Use when a SIEM\u002FEDR alert needs human classification, concurrent alerts must be prioritized, or a user report or threat-intel IOC match requires initial incident categorization.","https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Ftriaging-security-incident\u002FSKILL.md",[290],{"categoryNo":160,"categoryName":161,"taxonomyType":162,"taxonomyTypeDesc":163},[29,292,38,293,294,295,296,297,298,299,300,25,301,229,302,303,304,305,306,307],"triaging security incident","siem","file","ioc","soc","NIST-800-61","NIST","severity","edr","execution","analysis","classification","severity-classification","incident-triage","SANS-PICERL","SOC-operations"]