Triage a Brute Force Alert in 5 Steps (Event ID 4625)
A repeatable beginner workflow for the most common SOC alert: lots of failed Windows logons. Read the alert, enrich, scope, decide and document.
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20 posts found
A repeatable beginner workflow for the most common SOC alert: lots of failed Windows logons. Read the alert, enrich, scope, decide and document.
The networking, Windows log and alert triage questions that entry level SOC interviews often include, with simple ways to answer them clearly and what to study first.
A practical playbook for investigating a suspicious Microsoft 365 inbox rule: read the rule, scope the account, check what mail was exposed and contain it cleanly.
Build a tuned LSASS access detection from Sysmon Event ID 10, with Splunk, Sentinel and Sigma versions, plus triage steps and the hardening that reduces your risk.
A step by step way to decode an encoded PowerShell command, check its parent process and related activity, and decide whether to close or escalate.
RC4 is now off by default on domain controllers, so old Kerberoasting rules go quiet. Hunt AES ticket bursts, leftover RC4 accounts and decoy SPNs instead.
Use Sentinel watchlists to suppress known scanners, flag VIP accounts and keep exclusions out of your rule logic, with ready KQL for each pattern.
A beginner guide to log severity levels in syslog, Python, Log4j and Windows, why they differ between products, and why quiet INFO events can still matter.
Build detections for shadow copy deletion, backup catalog wipes and disabled Windows recovery, tune them per client and contain fast when they fire.