All news with #aws guardduty tag

🔒 AWS Managed Microsoft AD now supports CRUD operations on users and groups through the Directory Service Data APIs, accessible via the AWS CLI, APIs, and Management Console. This enables automation of identity lifecycle management and tighter security controls by integrating with services like Amazon GuardDuty, AWS Step Functions, and Amazon EventBridge. The blog demonstrates a practical workflow that detects unusual AD user behavior and triggers automated remediation such as disabling accounts and notifying stakeholders.

🔒 The AWS Customer Incident Response Team describes a tactic where attackers use credentials with the organizations:LeaveOrganization permission to remove a member account from an AWS Organization, bypassing inherited safeguards such as Service Control Policies and centralized management. After removal, the account is disentangled from consolidated billing, organization-wide CloudTrail trails, and delegated GuardDuty findings, reducing visibility. The post urges deploying the DenyLeaveOrganizationSCP, enforcing least privilege, securing root users with MFA and centralized root management, and updating detection and response workflows to monitor related CloudTrail events.

🔎 Amazon GuardDuty provides specialized detections and runtime monitoring to identify and mitigate cryptocurrency mining in AWS. It analyzes VPC Flow Logs, DNS queries, CloudTrail events, and workload telemetry to surface findings such as CryptoCurrency:Runtime/BitcoinTool.B and Impact:Runtime/CryptoMinerExecuted. Enable GuardDuty across accounts and Regions and combine it with patching, least-privilege access, and preventive controls to reduce risk.

🔒 AWS Security Hub is now available in the AWS GovCloud (US-East) and AWS GovCloud (US-West) Regions. Security Hub offers a unified cloud security posture by correlating and enriching signals from Amazon GuardDuty, Amazon Inspector, and Security Hub CSPM to prioritize active risks. The service delivers near‑real‑time risk analytics, exposure findings, automated response workflows, attack path visualization, and centralized organization-wide deployment with streamlined pricing for improved cost predictability.

🛡️ AWS outlines core concepts and a hands-on walkthrough for implementing security response automation to detect and remediate threats across AWS environments. The post maps automation to the NIST Cybersecurity Framework and demonstrates a CloudFormation deployment using EventBridge, Lambda, GuardDuty, and Security Hub to automatically restart CloudTrail and notify operators. It also highlights the Automated Security Response library, testing guidance, and cost and cleanup considerations.

🛡️AWS describes an automated active threat defense that translates MadPot honeypot intelligence into AWS Network Firewall protections within 30 minutes. The offering integrates with Amazon GuardDuty to surface detections while Network Firewall enforces multi-layered blocks across DNS, HTTP host headers, TLS SNI, and direct IP connections. Using a Swiss cheese model, it stacks inspection points so that if one layer is bypassed, others still interrupt reconnaissance, malware downloads, and C2 communications.

🔒 AWS announced a suite of AI- and automation-driven security features at re:Invent 2025 designed to shift cloud protection from reactive response to proactive prevention. AWS Security Agent and agentic incident response add continuous code review and automated investigations, while ML enhancements in GuardDuty and near real-time analytics in Security Hub improve multi-stage threat detection. Agent-centric IAM tools, including policy autopilot and private sign-in routes, streamline permissions and enforce granular, zero-trust access for agents and workloads.

🔒 AWS announces general availability of AWS Security Hub, adding near real-time risk analytics, advanced trends, unified enablement, and streamlined pricing across AWS security services. Security Hub correlates and enriches signals from Amazon GuardDuty, Amazon Inspector, and AWS Security Hub CSPM to surface and prioritize active risks. Centralized deployment across AWS Organizations, attack-path visualization, and automated workflows reduce manual correlation and speed remediation at scale.

🔍 AWS announced an update to GuardDuty Extended Threat Detection that adds multistage attack detection for Amazon EC2 instances and Amazon ECS clusters running on Fargate or EC2. The release introduces two critical findings — AttackSequence:EC2/CompromisedInstanceGroup and AttackSequence:ECS/CompromisedCluster — that group related events into a single, high-priority alert. Findings include a summary, event timeline, MITRE ATT&CK mappings, and remediation guidance to speed response. Runtime Monitoring must be enabled for full coverage, and customers can try the feature free for 30 days.

🔒 Amazon announced GuardDuty Malware Protection for AWS Backup, extending malware detection to backups of Amazon EC2 instances, Amazon EBS volumes, and Amazon S3 objects. The capability automatically scans new backups, supports on-demand scans of existing backups, and can identify the last known clean backup to reduce recovery impact. It offers incremental scanning to analyze only changed data between backups, lowering costs versus full rescans, and can be enabled even if GuardDuty foundational data sources are not active. The feature is available in supported Regions and accessible via the AWS Backup console, API, or CLI.

🛡️ AWS has updated the Transfer Family Terraform module to support automated malware scanning workflows for files transferred to S3. The module provisions GuardDuty S3 Protection–based scan pipelines, dynamic routing based on results, and threat notifications in a single deployment. It preserves folder structure, allows granular S3 prefix targeting, and helps ensure only verified clean files reach applications and data lakes.

🔒 This post explains how to plan and implement an AWS Security Hub proof of concept (POC) to evaluate unified cloud security operations. It outlines steps to define success criteria, configure integrations with GuardDuty, Amazon Inspector, Macie, and Security Hub CSPM, and to prepare, enable, and validate the deployment. The guidance recommends using overlapping trial periods, adopting the OCSF standard for normalized findings, and leveraging automation and ticketing integrations to measure operational impact.

🔒 AWS Security Incident Response provides an AWS-native incident management capability that combines automated triage, threat intelligence, and customer metadata to surface and prioritize genuine threats. The service integrates with Amazon GuardDuty, AWS Security Hub, and select third-party detections, and offers a unified console with 24/7 access to the AWS Customer Incident Response Team (CIRT). It supports delegated administration, organization-wide coverage, and immutable case timelines. Included with Amazon Managed Services (AMS), it accelerates investigation and containment to reduce mean time to resolution.

🔐 Amazon GuardDuty centralizes continuous threat detection across AWS using AI/ML and integrated threat intelligence. It offers optional protection plans—S3, EKS, Runtime Monitoring, Malware Protection for EC2 and S3, RDS, and Lambda—that extend detections to service-specific telemetry and runtime behaviors. Built-in Extended Threat Detection correlates signals into high-confidence attack sequences and maps findings to MITRE ATT&CK, providing prioritized remediation guidance.

🛡️ AWS has expanded GuardDuty Malware Protection for S3 scanning limits, raising the maximum file size from 5 GB to 100 GB and increasing archive processing to 10,000 files per archive (previously 1,000). These enhancements are automatically enabled in all supported AWS Regions. Customers gain broader coverage for large objects and dense archives stored in S3, improving pre-ingestion threat detection. This update strengthens protection for workloads and downstream processes.

🛡️ This post explains how organizations can use AWS security services while keeping data within Dedicated Local Zones. It describes the AWS Nitro System for hardware-enforced isolation, AWS KMS with an external key store option, and continuous protection from Amazon Inspector and GuardDuty. It also covers certificate management via ACM, DDoS mitigation with AWS Shield, and centralized auditing through CloudTrail.

🛡️ AWS announced general availability of Amazon GuardDuty custom threat detection using entity lists, expanding support beyond legacy IP-only lists to include domains and mixed IP/domain lists. The service adds a new finding type, Impact:EC2/MaliciousDomainRequest.Custom, when activity involves a listed domain. Entity lists can also be used to suppress alerts from trusted sources, and they simplify permissions and cross-region management. The capability is available in all Regions where GuardDuty runs, excluding China and GovCloud (US).

🛡️ AWS announced general availability of Amazon GuardDuty custom threat detection using entity lists, extending support beyond IP-only lists to include malicious domains and IP addresses. GuardDuty introduces a new finding type, Impact:EC2/MaliciousDomainRequest.Custom, triggered when activity related to a listed domain is observed. Entity lists also allow suppression of alerts from trusted sources and simplify cross-region permission management, avoiding IAM policy size limits. The feature is available in all GuardDuty Regions except China and GovCloud (US).

🔐 This AWS Security Blog post explains how to use Amazon GuardDuty to detect suspicious activity and automatically disable accounts in AWS Managed Microsoft AD. It walks through deploying a managed directory and a directory-administration EC2 instance, configuring AWS Systems Manager Run Command documents, and orchestrating those actions with AWS Step Functions triggered by Amazon EventBridge. The guide includes required permissions, testing steps using GuardDuty’s test domains, and notes on extending the automation to reset passwords or send notifications.

🛡️ AWS Security Incident Response is a Tier 1, AWS-native service launched in December 2024 to accelerate detection, triage, and containment of security incidents. It integrates with Amazon GuardDuty, AWS Security Hub, and AWS Systems Manager, supports partner integrations, and enables escalation to AWS CIRT. The service centralizes findings, automates monitoring and intelligent triage to reduce false positives, and offers prebuilt containment playbooks and APIs to compress MTTR and coordinate cross-account response.