Practical security, compliance, and AI security insights for startups and growing companies.https://543hq.com/en-ushttps://543hq.com/blog/vulnrichment-ssvc/https://543hq.com/blog/vulnrichment-ssvc/CISA has been publishing SSVC decision points on new CVEs since 2024 through a public GitHub repo called vulnrichment. Here is what it contains, how to query it, and how to build a filter that separates patch-now from patch-whenever regardless of CVSS score.Mon, 05 Oct 2026 00:00:00 GMTVulnerability ManagementSSVCCVSSCISARisk-Based PatchingPCISOC 2Luis Torres-Villarrealhttps://543hq.com/blog/clickfix-browser-cache-staging-crowdstrike-detections/https://543hq.com/blog/clickfix-browser-cache-staging-crowdstrike-detections/Microsoft Threat Intelligence published indicators for a ClickFix variant that pre-stages VBScript payloads in browser cache as fake PNG files, so there is no outbound fetch at execution time. Here's how to translate those IOCs and behaviors into CQL you can run in CrowdStrike Falcon NGSIEM today.Sun, 04 Oct 2026 00:00:00 GMTThreat IntelligenceCrowdStrikeClickFixDetection EngineeringNGSIEMSocial EngineeringCQLLuis Torres-Villarrealhttps://543hq.com/blog/gd-triage-02-s3-destruction-ai-agent/https://543hq.com/blog/gd-triage-02-s3-destruction-ai-agent/When GuardDuty fires on mass S3 deletion, the first triage question is not who did it: it is whether the data is gone for good. A step-by-step playbook using CloudTrail, versioning checks, and CQL hunt queries.Wed, 30 Sep 2026 00:00:00 GMTGuardDutyS3CloudTrailDataDestructionAIAgentsCQLThreatHuntingAWSLuis Torres-Villarrealhttps://543hq.com/blog/gd-triage-05-trojan-iam-ai-agent/https://543hq.com/blog/gd-triage-05-trojan-iam-ai-agent/Two GuardDuty finding types, two distinct detection signals. How AI agents pull the enrichment context (DNS follow-through, CloudTrail activity, source IP history) to produce a verdict without manual pivoting.Wed, 30 Sep 2026 00:00:00 GMTGuardDutyEC2IAMCloudTrailCrowdStrikeAI AgentsThreatHuntingIncidentResponseLuis Torres-Villarrealhttps://543hq.com/blog/encryption-sweep-ai-agent/https://543hq.com/blog/encryption-sweep-ai-agent/PCI DSS Requirement 3.5 and SOC 2 CC9.1 both require protecting data at rest. Here is exactly what an AI agent runs and what evidence it produces before your QSA finds the gap you missed.Tue, 29 Sep 2026 00:00:00 GMTPCISOC 2AI AgentsAWSEncryptionData ProtectionGRCAudit ReadinessCloud SecurityLuis Torres-Villarrealhttps://543hq.com/blog/gd-triage-01-s3-exfiltration-ai-agent/https://543hq.com/blog/gd-triage-01-s3-exfiltration-ai-agent/GuardDuty fires. CrowdStrike surfaces the alert. Neither tells you what was accessed, how much, or whether it left the account. Here is the exact triage path that answers those questions.Tue, 29 Sep 2026 00:00:00 GMTGuardDutyS3CloudTrailAIAgentsThreatHuntingAWSDataExfiltrationIncidentResponseLuis Torres-Villarrealhttps://543hq.com/blog/gd-triage-03-backdoor-c2-ai-agent/https://543hq.com/blog/gd-triage-03-backdoor-c2-ai-agent/GuardDuty fires Backdoor:EC2/C&CActivity.B or Backdoor:Runtime/C&CActivity.B. Here is the exact triage sequence: pull the finding, correlate with Falcon EDR, check VPC Flow Logs for connection volume, validate the destination IP, and contain if confirmed.Tue, 29 Sep 2026 00:00:00 GMTGuardDutyBackdoorC2EDRCrowdStrikeAIAgentsCQLThreatHuntingEC2RuntimeLuis Torres-Villarrealhttps://543hq.com/blog/gd-triage-04-runtime-execution-ai-agent/https://543hq.com/blog/gd-triage-04-runtime-execution-ai-agent/GuardDuty Runtime Monitoring fires two finding types that get high severity and low triage coverage: ReverseShell and SuspiciousTool. Here is the full agent-driven triage workflow: what triggers each, how to correlate CrowdStrike, and where to pivot.Tue, 29 Sep 2026 00:00:00 GMTGuardDutyRuntime SecurityCrowdStrikeEDRAIAgentsThreatHuntingAWSIncidentResponseLuis Torres-Villarrealhttps://543hq.com/blog/gd-triage-06-capstone-ai-agent/https://543hq.com/blog/gd-triage-06-capstone-ai-agent/The complete GuardDuty triage playbook: a decision tree that routes every alert type to the right log source, a full CQL query library, and an automation blueprint that takes alert-to-verdict under 2 minutes.Tue, 29 Sep 2026 00:00:00 GMTGuardDutyAWSCloudTrailEDRCrowdStrikeAIAgentsCQLThreatHuntingIncidentResponseLuis Torres-Villarrealhttps://543hq.com/blog/iam-access-review-ai-agent/https://543hq.com/blog/iam-access-review-ai-agent/PCI DSS Requirement 8 and SOC 2 CC6 both require demonstrating that access to systems is appropriately controlled. Here is exactly what an AI agent runs and what evidence it produces.Tue, 29 Sep 2026 00:00:00 GMTPCISOC 2AI AgentsAWSIAMAccess ControlGRCAudit ReadinessLuis Torres-Villarrealhttps://543hq.com/blog/logging-completeness-ai-agent/https://543hq.com/blog/logging-completeness-ai-agent/PCI DSS Requirement 10 has 40+ sub-controls covering what you log, where it goes, how long it stays, and whether your alerts reach anyone. Here is exactly what an AI agent runs and what evidence it produces before your QSA finds the gaps.Tue, 29 Sep 2026 00:00:00 GMTPCISOC 2AI AgentsAWSCloudTrailCloudWatchLoggingGRCAudit ReadinessLuis Torres-Villarrealhttps://543hq.com/blog/preaudit-gap-report-ai-agent/https://543hq.com/blog/preaudit-gap-report-ai-agent/PCI DSS Reqs 1.3, 3.5, 7.2, 8, and 10 all require current evidence. Here is the pre-audit gap report that runs all six control sweeps in one session and tells you exactly what your QSA will find before they find it.Tue, 29 Sep 2026 00:00:00 GMTPCISOC 2AI AgentsAWSCloud SecurityGRCAudit ReadinessPre-AuditIAMEncryptionLoggingNetwork SecurityLuis Torres-Villarrealhttps://543hq.com/blog/security-group-exposure-ai-agent/https://543hq.com/blog/security-group-exposure-ai-agent/PCI DSS Requirement 1.3 requires proving your CDE is isolated from the internet. Here is exactly what an AI agent runs and what evidence it produces, including the table your QSA will ask for.Tue, 29 Sep 2026 00:00:00 GMTPCISOC 2AI AgentsAWSSecurity GroupsNetwork SecurityGRCAudit ReadinessCloud SecurityLuis Torres-Villarrealhttps://543hq.com/blog/soc2-pci-network-diagram-ai-agent/https://543hq.com/blog/soc2-pci-network-diagram-ai-agent/PCI Req 1.2.3 and SOC 2 both require current network diagrams. Most teams submit one that was accurate at creation and has not been updated since. Here is how an AI agent with read-only AWS access fixes that.Sun, 27 Sep 2026 00:00:00 GMTPCISOC 2AI AgentsAWSCloud SecurityGRCAudit ReadinessLuis Torres-Villarrealhttps://543hq.com/blog/rapuncel-byovd-crowdstrike-detections/https://543hq.com/blog/rapuncel-byovd-crowdstrike-detections/A threat report dropped on September 17 describing a fake LastPass Authenticator installer that kills 145 security tools from kernel mode. Here's how to turn the report's defender hunting section into CQL you can run in CrowdStrike NGSIEM today.Tue, 22 Sep 2026 00:00:00 GMTThreat IntelligenceCrowdStrikeBYOVDDetection EngineeringNGSIEMInfostealerCQLLuis Torres-Villarrealhttps://543hq.com/blog/grc-platform-offboarding-agent-workflows/https://543hq.com/blog/grc-platform-offboarding-agent-workflows/Every GRC integration is a queryable API endpoint. Here's how to use the access data your compliance platform already collects to run automated offboarding sweeps across GitHub, Datadog, Okta, Entra ID, and AWS, with a timestamped audit trail in return.Mon, 21 Sep 2026 00:00:00 GMTAI SecurityGRCOktaGitHubDatadogAWSOffboardingSOC 2Agent WorkflowsLuis Torres-Villarrealhttps://543hq.com/blog/soc2-readiness-checklist-for-startups/https://543hq.com/blog/soc2-readiness-checklist-for-startups/What SOC 2 actually requires, what auditors really look for, and the fastest sensible path to your first Type II report - without wasting months on the wrong things.Thu, 17 Sep 2026 00:00:00 GMTSOC 2ComplianceStartupsLuis Torres-Villarrealhttps://543hq.com/blog/remote-access-abuse-reverse-shells-triage/https://543hq.com/blog/remote-access-abuse-reverse-shells-triage/Triaging RMM abuse, macOS reverse shells, and recon-command detections with an AI agent - where parent process context and network destination together decide the verdict, mapped to MITRE T1219 and T1059.Mon, 14 Sep 2026 00:00:00 GMTAI SecurityCrowdStrikeEndpoint SecurityThreat HuntingSOC AutomationLuis Torres-Villarrealhttps://543hq.com/blog/cloud-account-discovery-triaging-crowdstrike-with-ai/https://543hq.com/blog/cloud-account-discovery-triaging-crowdstrike-with-ai/How to turn a noisy, high-volume CrowdStrike detection class - AWS IAM account discovery - into an agent-driven triage workflow that classifies alerts, hunts proactively, and only surfaces what needs human eyes.Sun, 13 Sep 2026 00:00:00 GMTAI SecurityCrowdStrikeAWSCloud SecuritySOC AutomationLuis Torres-Villarrealhttps://543hq.com/blog/cloud-defense-evasion-agent-driven-workflows/https://543hq.com/blog/cloud-defense-evasion-agent-driven-workflows/Triaging AWS defense-evasion detections at scale with an AI agent: CloudTrail tampering, security group changes, and IMDSv1 re-enablement - classified, scoped, and actioned against real change tickets.Sun, 13 Sep 2026 00:00:00 GMTAI SecurityCrowdStrikeAWSCloud SecuritySOC AutomationLuis Torres-Villarrealhttps://543hq.com/blog/impact-data-destruction-ransomware-triage/https://543hq.com/blog/impact-data-destruction-ransomware-triage/When CloudTrail fires DeleteDBInstance, S3 versioning drops, and endpoints light up with ransomware indicators all at once - an agent-driven playbook for containment, blast-radius assessment, and recovery scoping in parallel.Sun, 13 Sep 2026 00:00:00 GMTAI SecurityCrowdStrikeAWSIncident ResponseSOC AutomationLuis Torres-Villarreal