Firewall network traffic logs are the largest driver of Microsoft Sentinel ingestion costs. Yet they remain a critical source of information for threat detection, investigations & incident response. Explore how Sentinel Summary Rules can reduce the cost of ingesting firewall traffic events while retaining the visibility SecOp teams need to detect threats & investigate incidents.
On March 31, 2026, two malicious Axios versions (1.14.1 and 0.30.4) were briefly published to npm via a compromised maintainer account. The only change performed was the addition of a trojanized dependency, whose postinstall script deployed a cross‑platform RAT (for macOS, Windows, and Linux). Although the Axios packages were removed within hours, multiple hits were observed in our MDR service, mainly across developer workstations and Docker containers. In this blog post, we briefly walk through the details of the incident, share our observations, and provide KQL hunting queries used to identify and assess exposure across our MDR customers.
ConsentFix (a.k.a.AuthCodeFix) is the latest variant of the fix-type phishing attacks, initially identified by Push Security. In this technique, the adversary tricks the victim into generating an OAuth authorization code that is part of a localhost URL, by signing in to the Azure CLI instance (or other vulnerable applications). Then, the victim is instructed to copy that URL and paste it into a phishing website, essentially handing over the authorization code to the adversary, who is now able to exchange it for an access token. Using the access token, the adversary gets access to the victim's Microsoft account.
A Security Operations Center (SOC) watches an organization’s IT systems for cyber threats 24/7. It quickly finds and fixes security problems and uses Security Information and Event Management (SIEM) tools to collect and analyze alerts and logs. SIEMs depend on log Collectors servers, which gather data from many sources and send it to the SIEM. … Continue reading Managing SIEM Log Collectors at Scale with Ansible and GitHub Actions – Part 1
A new incident comes in. The CEO’s laptop shows possible Cobalt Strike activity. Your host investigation shows that the attacker likely gained privileged access to her host and the initial activity is from two days ago. You contain the host in your EDR agent. But now you must determine if the attacker moved laterally inside … Continue reading Tracking historical IP assignments with Defender for Endpoint logs
Business email compromise (BEC) remains a commonly utilized tactic that serves as leverage for adversaries to gain access to user resources or company information. Depending on the end goals of the adversaries, and on the compromised user’s business role - the potential impact can vary from simply accessing sensitive information (e.g., from emails, files uploaded … Continue reading How to hunt & defend against Business Email Compromise (BEC)
