{"data":{"id":"SC-35","name":"External Malicious Code Identification","family":"SC","family_name":"System and Communications Protection","withdrawn":false,"description":"Include system components that proactively seek to identify network-based malicious code or malicious websites.","supplemental_guidance":"External malicious code identification differs from decoys in SC-26 in that the components actively probe networks, including the Internet, in search of malicious code contained on external websites. Like decoys, the use of external malicious code identification techniques requires some supporting isolation measures to ensure that any malicious code discovered during the search and subsequently executed does not infect organizational systems. Virtualization is a common technique for achieving such isolation.","enhancements":[],"baseline_low":false,"baseline_moderate":false,"baseline_high":false,"nist_800_53":{"rev5":{"id":"SC-35","name":"External Malicious Code Identification","description":"Include system components that proactively seek to identify network-based malicious code or malicious websites.","discussion":"External malicious code identification differs from decoys in SC-26 in that the components actively probe networks, including the Internet, in search of malicious code contained on external websites. Like decoys, the use of external malicious code identification techniques requires some supporting isolation measures to ensure that any malicious code discovered during the search and subsequently executed does not infect organizational systems. Virtualization is a common technique for achieving such isolation.","related_controls":["SC-07","SC-26","SC-44","SI-03","SI-04"],"baseline_low":null,"baseline_moderate":null,"baseline_high":null,"baseline_privacy":null,"new_in_rev5":false,"changes_from_rev4":"Title changed from 'Honeyclients' to 'External Malicious Code Identification' in Rev 5."}},"compliance_mappings":{"iso_27001_2022":[],"iso_27002_2022":[],"cobit_2019":[],"pci_dss_v4":["5.3","11.5"],"nist_csf_2":["DE.CM-09"],"cis_controls_v8":[],"soc2_tsc":[],"finos_ccc":[],"iso_42001_2023":[],"iec_62443":[],"asd_e8":[],"nis2":[],"apra_cps_234":[],"mas_trm":[],"pra_op_resilience":[],"bsi_grundschutz":[],"anssi":[],"osfi_b13":[],"finma_circular":[],"gdpr":[],"dora":[],"bio2":[],"rbi_csf":["Annex1.13"],"fisc":[],"lgpd_bcb":[],"hkma_tme1":[],"mlps_2":[],"dnb_good_practice":[],"cra":["CRA.I.2k"],"swift_cscf":[],"sebi_cscrf":["DE.CM"],"nerc_cip":[],"nrc_73_54":[],"tsa_psd":[],"ieee_1686":[],"ferc_cip":[],"doe_c2m2":[],"api_1164":[],"awia":[],"iaea_nss":[],"pci_pts":[],"fips_140":[],"cbest":["CBEST.4"],"tiber_eu":["TIBER.RT"],"pci_hsm":[],"common_criteria":[],"isae_3402":[],"fca_sysc_13":[],"fda_21_cfr_11":[],"fda_cyber":[],"hitrust_csf":[],"iso_27799":[],"lloyds_ms":[],"naic_ds":[],"nhs_dspt":[],"pra_ss1_23":[],"solvency_ii":[],"owasp_masvs_v2":[],"csa_ccm_v4":[],"csa_aicm":[],"ccss_v9":[],"mica":[],"basel_sco60":[],"bssc":[],"sec_custody_digital":[],"dpdpa":[]},"attack_techniques":[{"id":"T1210","name":"Exploitation of Remote Services","tactics":["lateral-movement"],"mapping_type":"mitigates","mapping_rationale":"Proactive identification of network-based malicious code discovers exploit payloads targeting remote services before they reach production systems, enabling preemptive blocking of lateral movement exploitation attempts."},{"id":"T1211","name":"Exploitation for Defense Evasion","tactics":["defense-evasion"],"mapping_type":"mitigates","mapping_rationale":"External malicious code identification that probes networks for defense evasion exploits discovers adversary tools and techniques in the wild, enabling proactive defenses against exploitation for defense evasion."},{"id":"T1212","name":"Exploitation for Credential Access","tactics":["credential-access"],"mapping_type":"mitigates","mapping_rationale":"Proactive scanning for network-based malicious code targeting authentication services identifies credential access exploits in external networks, enabling preemptive patching and detection of credential exploitation techniques."}],"metadata":{"last_reviewed":"2026-10-03","review_notes":"2026-10-03: nist_csf_2 DE.CM-09 added from NIST's CSF 2.0 to SP 800-53 Rev 5.2.0 crosswalk (OLIR entry 186), which OSA's mapping now takes as its base.","mapping_status":"complete"},"function":"preventative","used_by_patterns":[]}}