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Use when deploying new Linux servers, remediating audit findings, or establishing security baselines for Linux infrastructure. Activates for requests involving Linux hardening, CIS benchmarks for Linux, server security baselines, or Linux configuration compliance.","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\u002Fhardening-linux-endpoint-with-cis-benchmark\u002FSKILL.md",[18],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000023","Skill与智能体开发","SCENARIO","使用场景",[24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42],"hardening linux endpoint with cis benchmark","benchmark","endpoint","hardening","linux","linux-security","RHEL","Ubuntu","t1059","t1055","cis-benchmark","endpoint-security","compliance","server","audit","infrastructure","pr","cybersecurity","security","2026-11-10 10:12:30",false,"---\nname: hardening-linux-endpoint-with-cis-benchmark\ndescription: 'Hardens Linux endpoints using CIS Benchmark recommendations for Ubuntu,\n  RHEL, and CentOS to reduce attack surface, enforce security baselines, and meet\n  compliance requirements. Use when deploying new Linux servers, remediating audit\n  findings, or establishing security baselines for Linux infrastructure. Activates\n  for requests involving Linux hardening, CIS benchmarks for Linux, server security\n  baselines, or Linux configuration compliance.\n\n  '\ndomain: cybersecurity\nsubdomain: endpoint-security\ntags:\n- endpoint\n- hardening\n- linux-security\n- CIS-benchmark\n- Ubuntu\n- RHEL\nversion: 1.0.0\nauthor: mahipal\nlicense: Apache-2.0\nnist_csf:\n- PR.PS-01\n- PR.PS-02\n- DE.CM-01\n- PR.IR-01\nmitre_attack:\n- T1055\n- T1547\n- T1059\n- T1036\n---\n# Hardening Linux Endpoint with CIS Benchmark\n\n## When to Use\n\nUse this skill when:\n- Hardening Linux servers (Ubuntu, RHEL, CentOS, Debian) against CIS benchmarks\n- Automating Linux security baselines using Ansible, OpenSCAP, or shell scripts\n- Meeting compliance requirements (PCI DSS, HIPAA, SOC 2) for Linux endpoints\n- Remediating findings from vulnerability scans or security audits\n\n**Do not use** for Windows hardening (use hardening-windows-endpoint-with-cis-benchmark).\n\n## Prerequisites\n\n- Root or sudo access on target Linux endpoints\n- CIS Benchmark PDF for target distribution (from cisecurity.org)\n- OpenSCAP or CIS-CAT for automated assessment\n- Ansible for enterprise-scale remediation (optional)\n\n## Workflow\n\n### Step 1: Filesystem Configuration (Section 1)\n\n```bash\n# 1.1.1 Disable unused filesystems\ncat >> \u002Fetc\u002Fmodprobe.d\u002FCIS.conf \u003C\u003C 'EOF'\ninstall cramfs \u002Fbin\u002Ftrue\ninstall freevxfs \u002Fbin\u002Ftrue\ninstall jffs2 \u002Fbin\u002Ftrue\ninstall hfs \u002Fbin\u002Ftrue\ninstall hfsplus \u002Fbin\u002Ftrue\ninstall squashfs \u002Fbin\u002Ftrue\ninstall udf \u002Fbin\u002Ftrue\nEOF\n\n# 1.1.2 Ensure \u002Ftmp is a separate partition with nodev,nosuid,noexec\n# \u002Fetc\u002Ffstab entry:\n# tmpfs \u002Ftmp tmpfs defaults,rw,nosuid,nodev,noexec,relatime 0 0\nsystemctl unmask tmp.mount\nsystemctl enable tmp.mount\n\n# 1.1.8 Ensure nodev option on \u002Fdev\u002Fshm\nmount -o remount,nodev,nosuid,noexec \u002Fdev\u002Fshm\necho \"tmpfs \u002Fdev\u002Fshm tmpfs defaults,nodev,nosuid,noexec 0 0\" >> \u002Fetc\u002Ffstab\n\n# 1.4 Secure boot settings\nchown root:root \u002Fboot\u002Fgrub\u002Fgrub.cfg\nchmod 600 \u002Fboot\u002Fgrub\u002Fgrub.cfg\n# Set GRUB password\ngrub-mkpasswd-pbkdf2  # Generate hash, add to \u002Fetc\u002Fgrub.d\u002F40_custom\n```\n\n### Step 2: Services and Network (Sections 2-3)\n\n```bash\n# 2.1 Disable unnecessary services\nsystemctl disable --now avahi-daemon\nsystemctl disable --now cups\nsystemctl disable --now rpcbind\nsystemctl disable --now xinetd\n\n# 2.2 Ensure NTP is configured\napt install chrony -y  # or systemd-timesyncd\nsystemctl enable --now chrony\n\n# 3.1 Network parameters (host only, not router)\ncat >> \u002Fetc\u002Fsysctl.d\u002F99-cis.conf \u003C\u003C 'EOF'\nnet.ipv4.ip_forward = 0\nnet.ipv4.conf.all.send_redirects = 0\nnet.ipv4.conf.default.send_redirects = 0\nnet.ipv4.conf.all.accept_source_route = 0\nnet.ipv4.conf.default.accept_source_route = 0\nnet.ipv4.conf.all.accept_redirects = 0\nnet.ipv4.conf.default.accept_redirects = 0\nnet.ipv4.conf.all.secure_redirects = 0\nnet.ipv4.conf.default.secure_redirects = 0\nnet.ipv4.conf.all.log_martians = 1\nnet.ipv4.conf.default.log_martians = 1\nnet.ipv4.icmp_echo_ignore_broadcasts = 1\nnet.ipv4.icmp_ignore_bogus_error_responses = 1\nnet.ipv4.conf.all.rp_filter = 1\nnet.ipv4.conf.default.rp_filter = 1\nnet.ipv4.tcp_syncookies = 1\nnet.ipv6.conf.all.accept_ra = 0\nnet.ipv6.conf.default.accept_ra = 0\nEOF\nsysctl --system\n\n# 3.4 Configure firewall (UFW or firewalld)\nufw enable\nufw default deny incoming\nufw default allow outgoing\nufw allow ssh\n```\n\n### Step 3: Access Control (Sections 4-5)\n\n```bash\n# 5.2 SSH Server Configuration (\u002Fetc\u002Fssh\u002Fsshd_config)\nsed -i 's\u002F#Protocol 2\u002FProtocol 2\u002F' \u002Fetc\u002Fssh\u002Fsshd_config\ncat >> \u002Fetc\u002Fssh\u002Fsshd_config \u003C\u003C 'EOF'\nLogLevel VERBOSE\nMaxAuthTries 4\nPermitRootLogin no\nPermitEmptyPasswords no\nPasswordAuthentication no\nX11Forwarding no\nMaxStartups 10:30:60\nLoginGraceTime 60\nAllowTcpForwarding no\nClientAliveInterval 300\nClientAliveCountMax 3\nEOF\nsystemctl restart sshd\n\n# 5.3 Password policy (PAM)\n# \u002Fetc\u002Fsecurity\u002Fpwquality.conf\nminlen = 14\ndcredit = -1\nucredit = -1\nocredit = -1\nlcredit = -1\n\n# 5.4 User account settings\n# \u002Fetc\u002Flogin.defs\nPASS_MAX_DAYS 365\nPASS_MIN_DAYS 1\nPASS_WARN_AGE 7\n\n# Lock inactive accounts\nuseradd -D -f 30\n```\n\n### Step 4: Audit and Logging (Section 4)\n\n```bash\n# Install and configure auditd\napt install auditd audispd-plugins -y\nsystemctl enable --now auditd\n\n# \u002Fetc\u002Faudit\u002Frules.d\u002Fcis.rules\ncat > \u002Fetc\u002Faudit\u002Frules.d\u002Fcis.rules \u003C\u003C 'EOF'\n-w \u002Fetc\u002Fsudoers -p wa -k scope\n-w \u002Fetc\u002Fsudoers.d\u002F -p wa -k scope\n-w \u002Fvar\u002Flog\u002Fsudo.log -p wa -k actions\n-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change\n-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale\n-w \u002Fetc\u002Fgroup -p wa -k identity\n-w \u002Fetc\u002Fpasswd -p wa -k identity\n-w \u002Fetc\u002Fshadow -p wa -k identity\n-w \u002Fvar\u002Flog\u002Ffaillog -p wa -k logins\n-w \u002Fvar\u002Flog\u002Flastlog -p wa -k logins\n-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -k perm_mod\n-a always,exit -F arch=b64 -S unlink -S rmdir -S rename -k delete\n-w \u002Fsbin\u002Finsmod -p x -k modules\n-w \u002Fsbin\u002Fmodprobe -p x -k modules\n-e 2\nEOF\naugenrules --load\n\n# Configure rsyslog for remote logging\necho \"*.* @@syslog-server.corp.com:514\" >> \u002Fetc\u002Frsyslog.d\u002F50-remote.conf\nsystemctl restart rsyslog\n```\n\n### Step 5: Assess with OpenSCAP\n\n```bash\n# Install OpenSCAP\napt install openscap-scanner scap-security-guide -y\n\n# Run CIS benchmark assessment\noscap xccdf eval \\\n  --profile xccdf_org.ssgproject.content_profile_cis_level1_server \\\n  --results \u002Ftmp\u002Fcis_results.xml \\\n  --report \u002Ftmp\u002Fcis_report.html \\\n  \u002Fusr\u002Fshare\u002Fxml\u002Fscap\u002Fssg\u002Fcontent\u002Fssg-ubuntu2204-ds.xml\n\n# View HTML report in browser for detailed results\n```\n\n## Key Concepts\n\n| Term | Definition |\n|------|-----------|\n| **OpenSCAP** | Open-source SCAP (Security Content Automation Protocol) scanner for automated compliance |\n| **auditd** | Linux audit framework for monitoring system calls and file access |\n| **PAM** | Pluggable Authentication Modules; configurable authentication framework for Linux |\n| **sysctl** | Linux kernel parameter configuration for network and system security tuning |\n| **AIDE** | Advanced Intrusion Detection Environment; file integrity checker for Linux |\n\n## Tools & Systems\n\n- **OpenSCAP**: Automated CIS benchmark assessment for Linux\n- **Ansible Lockdown**: Ansible roles for automated CIS benchmark remediation\n- **Lynis**: Open-source security auditing tool for Linux\u002FUnix systems\n- **AIDE**: File integrity monitoring for Linux endpoints\n- **auditd**: Linux audit framework for system call monitoring\n\n## Common Pitfalls\n\n- **Applying server benchmarks to workstations**: CIS provides separate benchmarks for server and workstation profiles. Server benchmarks disable desktop services.\n- **Breaking SSH access**: Misconfiguring sshd_config (especially PermitRootLogin, PasswordAuthentication) can lock out administrators. Always test SSH configuration changes from a second session.\n- **Not testing firewall rules**: Enabling UFW without allowing SSH first will disconnect remote sessions permanently.\n- **Kernel parameter changes without testing**: Some sysctl settings can break application networking. Test in staging first.\n","# Hardening Linux Endpoint with CIS Benchmark\n\n## When to Use\n\nUse this skill when:\n- Hardening Linux servers (Ubuntu, RHEL, CentOS, Debian) against CIS benchmarks\n- Automating Linux security baselines using Ansible, OpenSCAP, or shell scripts\n- Meeting compliance requirements (PCI DSS, HIPAA, SOC 2) for Linux endpoints\n- Remediating findings from vulnerability scans or security audits\n\n**Do not use** for Windows hardening (use hardening-windows-endpoint-with-cis-benchmark).\n\n## Prerequisites\n\n- Root or sudo access on target Linux endpoints\n- CIS Benchmark PDF for target distribution (from cisecurity.org)\n- OpenSCAP or CIS-CAT for automated assessment\n- Ansible for enterprise-scale remediation (optional)\n\n## Workflow\n\n### Step 1: Filesystem Configuration (Section 1)\n\n```bash\n# 1.1.1 Disable unused filesystems\ncat >> \u002Fetc\u002Fmodprobe.d\u002FCIS.conf \u003C\u003C 'EOF'\ninstall cramfs \u002Fbin\u002Ftrue\ninstall freevxfs \u002Fbin\u002Ftrue\ninstall jffs2 \u002Fbin\u002Ftrue\ninstall hfs \u002Fbin\u002Ftrue\ninstall hfsplus \u002Fbin\u002Ftrue\ninstall squashfs \u002Fbin\u002Ftrue\ninstall udf \u002Fbin\u002Ftrue\nEOF\n\n# 1.1.2 Ensure \u002Ftmp is a separate partition with nodev,nosuid,noexec\n# \u002Fetc\u002Ffstab entry:\n# tmpfs \u002Ftmp tmpfs defaults,rw,nosuid,nodev,noexec,relatime 0 0\nsystemctl unmask tmp.mount\nsystemctl enable tmp.mount\n\n# 1.1.8 Ensure nodev option on \u002Fdev\u002Fshm\nmount -o remount,nodev,nosuid,noexec \u002Fdev\u002Fshm\necho \"tmpfs \u002Fdev\u002Fshm tmpfs defaults,nodev,nosuid,noexec 0 0\" >> \u002Fetc\u002Ffstab\n\n# 1.4 Secure boot settings\nchown root:root \u002Fboot\u002Fgrub\u002Fgrub.cfg\nchmod 600 \u002Fboot\u002Fgrub\u002Fgrub.cfg\n# Set GRUB password\ngrub-mkpasswd-pbkdf2  # Generate hash, add to \u002Fetc\u002Fgrub.d\u002F40_custom\n```\n\n### Step 2: Services and Network (Sections 2-3)\n\n```bash\n# 2.1 Disable unnecessary services\nsystemctl disable --now avahi-daemon\nsystemctl disable --now cups\nsystemctl disable --now rpcbind\nsystemctl disable --now xinetd\n\n# 2.2 Ensure NTP is configured\napt install chrony -y  # or systemd-timesyncd\nsystemctl enable --now chrony\n\n# 3.1 Network parameters (host only, not router)\ncat >> \u002Fetc\u002Fsysctl.d\u002F99-cis.conf \u003C\u003C 'EOF'\nnet.ipv4.ip_forward = 0\nnet.ipv4.conf.all.send_redirects = 0\nnet.ipv4.conf.default.send_redirects = 0\nnet.ipv4.conf.all.accept_source_route = 0\nnet.ipv4.conf.default.accept_source_route = 0\nnet.ipv4.conf.all.accept_redirects = 0\nnet.ipv4.conf.default.accept_redirects = 0\nnet.ipv4.conf.all.secure_redirects = 0\nnet.ipv4.conf.default.secure_redirects = 0\nnet.ipv4.conf.all.log_martians = 1\nnet.ipv4.conf.default.log_martians = 1\nnet.ipv4.icmp_echo_ignore_broadcasts = 1\nnet.ipv4.icmp_ignore_bogus_error_responses = 1\nnet.ipv4.conf.all.rp_filter = 1\nnet.ipv4.conf.default.rp_filter = 1\nnet.ipv4.tcp_syncookies = 1\nnet.ipv6.conf.all.accept_ra = 0\nnet.ipv6.conf.default.accept_ra = 0\nEOF\nsysctl --system\n\n# 3.4 Configure firewall (UFW or firewalld)\nufw enable\nufw default deny incoming\nufw default allow outgoing\nufw allow ssh\n```\n\n### Step 3: Access Control (Sections 4-5)\n\n```bash\n# 5.2 SSH Server Configuration (\u002Fetc\u002Fssh\u002Fsshd_config)\nsed -i 's\u002F#Protocol 2\u002FProtocol 2\u002F' \u002Fetc\u002Fssh\u002Fsshd_config\ncat >> \u002Fetc\u002Fssh\u002Fsshd_config \u003C\u003C 'EOF'\nLogLevel VERBOSE\nMaxAuthTries 4\nPermitRootLogin no\nPermitEmptyPasswords no\nPasswordAuthentication no\nX11Forwarding no\nMaxStartups 10:30:60\nLoginGraceTime 60\nAllowTcpForwarding no\nClientAliveInterval 300\nClientAliveCountMax 3\nEOF\nsystemctl restart sshd\n\n# 5.3 Password policy (PAM)\n# \u002Fetc\u002Fsecurity\u002Fpwquality.conf\nminlen = 14\ndcredit = -1\nucredit = -1\nocredit = -1\nlcredit = -1\n\n# 5.4 User account settings\n# \u002Fetc\u002Flogin.defs\nPASS_MAX_DAYS 365\nPASS_MIN_DAYS 1\nPASS_WARN_AGE 7\n\n# Lock inactive accounts\nuseradd -D -f 30\n```\n\n### Step 4: Audit and Logging (Section 4)\n\n```bash\n# Install and configure auditd\napt install auditd audispd-plugins -y\nsystemctl enable --now auditd\n\n# \u002Fetc\u002Faudit\u002Frules.d\u002Fcis.rules\ncat > \u002Fetc\u002Faudit\u002Frules.d\u002Fcis.rules \u003C\u003C 'EOF'\n-w \u002Fetc\u002Fsudoers -p wa -k scope\n-w \u002Fetc\u002Fsudoers.d\u002F -p wa -k scope\n-w \u002Fvar\u002Flog\u002Fsudo.log -p wa -k actions\n-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change\n-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale\n-w \u002Fetc\u002Fgroup -p wa -k identity\n-w \u002Fetc\u002Fpasswd -p wa -k identity\n-w \u002Fetc\u002Fshadow -p wa -k identity\n-w \u002Fvar\u002Flog\u002Ffaillog -p wa -k logins\n-w \u002Fvar\u002Flog\u002Flastlog -p wa -k logins\n-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -k perm_mod\n-a always,exit -F arch=b64 -S unlink -S rmdir -S rename -k delete\n-w \u002Fsbin\u002Finsmod -p x -k modules\n-w \u002Fsbin\u002Fmodprobe -p x -k modules\n-e 2\nEOF\naugenrules --load\n\n# Configure rsyslog for remote logging\necho \"*.* @@syslog-server.corp.com:514\" >> \u002Fetc\u002Frsyslog.d\u002F50-remote.conf\nsystemctl restart rsyslog\n```\n\n### Step 5: Assess with OpenSCAP\n\n```bash\n# Install OpenSCAP\napt install openscap-scanner scap-security-guide -y\n\n# Run CIS benchmark assessment\noscap xccdf eval \\\n  --profile xccdf_org.ssgproject.content_profile_cis_level1_server \\\n  --results \u002Ftmp\u002Fcis_results.xml \\\n  --report \u002Ftmp\u002Fcis_report.html \\\n  \u002Fusr\u002Fshare\u002Fxml\u002Fscap\u002Fssg\u002Fcontent\u002Fssg-ubuntu2204-ds.xml\n\n# View HTML report in browser for detailed results\n```\n\n## Key Concepts\n\n| Term | Definition |\n|------|-----------|\n| **OpenSCAP** | Open-source SCAP (Security Content Automation Protocol) scanner for automated compliance |\n| **auditd** | Linux audit framework for monitoring system calls and file access |\n| **PAM** | Pluggable Authentication Modules; configurable authentication framework for Linux |\n| **sysctl** | Linux kernel parameter configuration for network and system security tuning |\n| **AIDE** | Advanced Intrusion Detection Environment; file integrity checker for Linux |\n\n## Tools & Systems\n\n- **OpenSCAP**: Automated CIS benchmark assessment for Linux\n- **Ansible Lockdown**: Ansible roles for automated CIS benchmark remediation\n- **Lynis**: Open-source security auditing tool for Linux\u002FUnix systems\n- **AIDE**: File integrity monitoring for Linux endpoints\n- **auditd**: Linux audit framework for system call monitoring\n\n## Common Pitfalls\n\n- **Applying server benchmarks to workstations**: CIS provides separate benchmarks for server and workstation profiles. Server benchmarks disable desktop services.\n- **Breaking SSH access**: Misconfiguring sshd_config (especially PermitRootLogin, PasswordAuthentication) can lock out administrators. Always test SSH configuration changes from a second session.\n- **Not testing firewall rules**: Enabling UFW without allowing SSH first will disconnect remote sessions permanently.\n- **Kernel parameter changes without testing**: Some sysctl settings can break application networking. Test in staging first.\n",{"name":5,"tags":48,"author":50,"domain":41,"license":15,"version":51,"nist_csf":52,"subdomain":35,"description":57,"mitre_attack":58},[26,27,29,49,31,30],"CIS-benchmark","mahipal","1.0.0",[53,54,55,56],"PR.PS-01","PR.PS-02","DE.CM-01","PR.IR-01","Hardens Linux endpoints using CIS Benchmark recommendations for Ubuntu, RHEL, and CentOS to reduce attack surface, enforce security baselines, and meet compliance requirements. Use when deploying new Linux servers, remediating audit findings, or establishing security baselines for Linux infrastructure. Activates for requests involving Linux hardening, CIS benchmarks for Linux, server security baselines, or Linux configuration compliance.\n",[59,60,61,62],"T1055","T1547","T1059","T1036","main","54a798831d2266a3ca61ce68a7acb80b81160d57","skills\u002Fhardening-linux-endpoint-with-cis-benchmark",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":74,"prompt":84,"zipAvailable":85},[75,78,81],{"tool":76,"command":77},"npx","npx skills add mukul975\u002FAnthropic-Cybersecurity-Skills --skill hardening-linux-endpoint-with-cis-benchmark",{"tool":79,"command":80},"bunx","bunx skills add mukul975\u002FAnthropic-Cybersecurity-Skills --skill hardening-linux-endpoint-with-cis-benchmark",{"tool":82,"command":83},"pnpm","pnpm dlx skills add mukul975\u002FAnthropic-Cybersecurity-Skills --skill hardening-linux-endpoint-with-cis-benchmark","安装技能，技能地址：https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002FSKILL.md",true,[87,93,98,104,108,112,116,122],{"path":88,"resourceType":89,"resourceTypeDesc":90,"sizeBytes":91,"sourceHtmlUrl":92},"assets\u002Ftemplate.md","ASSET","资产文件",655,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002Fassets\u002Ftemplate.md",{"path":94,"resourceType":94,"resourceTypeDesc":95,"sizeBytes":96,"sourceHtmlUrl":97},"LICENSE","许可证",11255,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002FLICENSE",{"path":99,"resourceType":100,"resourceTypeDesc":101,"sizeBytes":102,"sourceHtmlUrl":103},"references\u002Fapi-reference.md","REFERENCE","参考文档",2265,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002Freferences\u002Fapi-reference.md",{"path":105,"resourceType":100,"resourceTypeDesc":101,"sizeBytes":106,"sourceHtmlUrl":107},"references\u002Flegacy-command.md",1211,"https:\u002F\u002Fgithub.com\u002Fjleechanorg\u002Fjleechan-skills\u002Fblob\u002Fmain\u002F.claude\u002Fskills\u002Fauto\u002Freferences\u002Flegacy-command.md",{"path":109,"resourceType":100,"resourceTypeDesc":101,"sizeBytes":110,"sourceHtmlUrl":111},"references\u002Fstandards.md",1048,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002Freferences\u002Fstandards.md",{"path":113,"resourceType":100,"resourceTypeDesc":101,"sizeBytes":114,"sourceHtmlUrl":115},"references\u002Fworkflows.md",739,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002Freferences\u002Fworkflows.md",{"path":117,"resourceType":118,"resourceTypeDesc":119,"sizeBytes":120,"sourceHtmlUrl":121},"scripts\u002Fagent.py","SCRIPT","脚本",6333,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002Fscripts\u002Fagent.py",{"path":123,"resourceType":118,"resourceTypeDesc":119,"sizeBytes":124,"sourceHtmlUrl":125},"scripts\u002Fprocess.py",2516,"https:\u002F\u002Fgithub.com\u002Fmukul975\u002FAnthropic-Cybersecurity-Skills\u002Fblob\u002Fmain\u002Fskills\u002Fhardening-linux-endpoint-with-cis-benchmark\u002Fscripts\u002Fprocess.py",[127,152,176,202,228,255],{"skillNo":128,"name":129,"nameZh":6,"description":130,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":131,"categories":132,"keywords":134,"publishedAt":43},"01M6AGDM3HJXTKXX15ZZ0ZVCJ3","verifying-build-provenance-with-slsa-sigstore","Verifies 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",[133],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},[135,136,137,138,42,41,139,140,40,141,142,143,144,145,146,147,148,149,150,151],"sigstore","provenance","slsa","verifying build provenance with slsa sigstore","incident response","identity","code","artifacts","ci","supply-chain","pipeline","supply-chain-security","t1195","attestation","code-signing","cosign","keyless",{"skillNo":153,"name":154,"nameZh":6,"description":155,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":156,"categories":157,"keywords":159,"publishedAt":43},"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",[158],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},[160,148,161,162,42,163,41,40,164,165,166,167,168,169,170,171,172,173,174,175],"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":177,"name":178,"nameZh":6,"description":179,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":180,"categories":181,"keywords":186,"publishedAt":43},"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",[182,185],{"categoryNo":183,"categoryName":184,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000008","测试与质量",{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},[170,187,188,189,190,41,39,191,164,36,192,193,194,195,196,197,198,199,200,201],"backup","recovery","validating backup integrity for recovery","testing","validation","hash-verification","incident-response","ransomware","cryptocurrency","detection","t1078","t1490","immutable","disaster-recovery","restore-testing",{"skillNo":203,"name":204,"nameZh":6,"description":205,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":206,"categories":207,"keywords":209,"publishedAt":43},"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",[208],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},[210,211,212,41,213,214,215,216,217,218,219,220,221,222,223,224,167,225,226,227],"windows","kape","triaging windows with kape","registry","browser","logs","windows-forensics","dfir","mft","mftecmd","data","prefetch","eric-zimmerman","digital-forensics","SET","collection","pecmd","artifact-collection",{"skillNo":229,"name":230,"nameZh":6,"description":231,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":232,"categories":233,"keywords":235,"publishedAt":43},"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",[234],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},[236,237,238,41,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254],"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":256,"name":257,"nameZh":6,"description":258,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":259,"categories":260,"keywords":262,"publishedAt":43},"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",[261],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},[42,263,41,264,265,266,267,268,269,270,271,197,272,198,273,274,275,276,277,278],"triaging security incident","siem","file","ioc","soc","NIST-800-61","NIST","severity","edr","execution","analysis","classification","severity-classification","incident-triage","SANS-PICERL","SOC-operations"]