false positives

A routine service notification from Microsoft Azure was flagged as spam by Microsoft 365 Security — a small event on the surface that exposes a recurring, high-stakes problem: automated email filters, tuned to fight increasingly sophisticated phishing and spam, can and do misclassify legitimate...

Microsoft’s January 13, 2026 cumulative updates finally put an end to the months‑long outbreak of noisy, misleading security alerts that flagged a core Windows library—WinSqlite3.dll—as vulnerable, restoring calm to SOC queues and IT help desks overwhelmed by false positives. Background For much...

Microsoft is switching on a trio of Microsoft Teams messaging protections by default for tenants that still use the out‑of‑the‑box configuration, a move that will automatically enable weaponizable file type protection, malicious URL detection, and an end‑user false‑positive reporting mechanism...

Microsoft Defender for Endpoint began issuing persistent, misleading “BIOS update” alerts for many Dell systems on October 2, 2025 — a false‑positive caused by a code defect in Defender’s vulnerability‑fetching logic that Microsoft says has been identified and for which a corrective patch has...

Microsoft Defender for Endpoint began firing repeated alerts telling users to update Dell machines’ BIOS — a false positive caused by a logic bug in Defender’s vulnerability-fetching code — and although Microsoft says a fix has been developed, administrators are left juggling alert fatigue...

Windows’ built‑in protection is usually a silent, helpful bodyguard — but when Microsoft Defender (Windows Security) quarantines or removes a file you know is safe, it can suddenly become a workflow blocker. This guide explains why Defender removes files, how to safely prevent automatic...

Microsoft Defender SmartScreen in Microsoft Edge acts as a live reputation and content filter that warns users about phishing pages, malicious downloads, and suspicious sites before they can do harm. (support.microsoft.com, learn.microsoft.com) Background Microsoft Defender SmartScreen began as...

DistroWatch’s note that Windows anti‑virus tools regularly mark downloaded Linux ISO images as malicious has resurfaced a familiar — and often confusing — problem for newcomers: legitimate distribution images trigger threat alerts on Windows machines. The warnings are usually false positives...

Microsoft's introduction of Smart App Control (SAC) in Windows 11 has sparked considerable discussion within the tech community. Positioned as an AI-driven security feature, SAC aims to proactively block untrusted or potentially harmful applications. However, Microsoft's characterization of SAC...

In a rapidly evolving digital communication landscape, Microsoft Exchange Online plays a foundational role in email services for countless organizations worldwide. On April 25th, a significant issue arose, sending ripples through the Microsoft 365 ecosystem: legitimate emails originating from...

It started with what seemed like a routine dance between machines—Microsoft Defender XDR, that stalwart of endpoint protection, doing its best to keep the digital wolves at bay. But as any seasoned IT pro knows, sometimes the greatest havoc comes not from the wolves, but from our own guard...

Anyone relying on smooth, uninterrupted digital communication probably felt an unpleasant jolt between April 22 and April 24, when Microsoft's Exchange Online took it upon itself to flag perfectly legitimate Adobe emails as spam—because who doesn't enjoy a little surprise inbox purgatory before...

Just as IT pros everywhere were stretching, caffeinating, and preparing for another ordinary Monday, Microsoft’s Exchange Online machine learning models decided to tackle spam in a manner that can only be described as “unapologetically enthusiastic.” Picture this: Adobe emails—the trusty...

It was one of those weekends when IT administrators around the world were either catching up on much-needed rest or, if superstition holds any currency, knocking on wood in hope that nothing out-of-the-ordinary would grace their outboxes come Monday. Alas, dear reader, tranquility was not on the...

The night was humming with the quiet, digital anxiety only IT professionals know too well when the heartbeat of business thrums through cloud infrastructure and acronyms like MFA, MACE, and Entra are uttered with the reverence reserved for ancient gods. Into this perfectly (and precariously)...

Introduction Microsoft Defender for Endpoint is receiving a significant upgrade that aims to tighten security defenses by automatically blocking unwanted traffic from undiscovered endpoints. This innovative feature is designed to stem malicious lateral movement within network environments...

Let’s face it, we’ve all been there—a trusted app flagged as a malicious entity by Windows Security. It’s a nuisance, but that’s where exclusions come in handy. Microsoft makes it relatively straightforward for users to tell their system, “Hey, this file, folder, or process is in the clear, so...

ExplorerPatcher, a beloved UI customization tool within the Windows 11 enthusiast community, has rolled out a significant update that promises to enhance user experience and address critical issues faced by its user base. This latest release underscores the ongoing tug-of-war between third-party...

PA 10.2.1 is reported as having 2 viruses by Webroot. VirusTotal.com reports no virus, and Malwarebytes scan reports no virus as well. Why does Webroot report a virus?

Hello dear friends. I wanted to ask you about some logs that from my exchange server which i catch with qradar. They are all with qid: 5000830 or eventid:4624 which is a successful login to a server or anything. I use a rule which tells me if someone logs in to the exchange server from an...