Tag Archives: Security

What's going on in France: One data breach after another

Posted on 2026-05-03 by guenni

Recently I found myself wondering what's been going on in France lately. For the past few days, one major data breach after another has come to public. All of them stem from hacks of government platforms or large organizations. Here's … Continue reading →

Posted in Security | Tagged | Leave a comment

AI Risks: Insurers Are Taking Precautions

Posted on 2026-05-02 by guenni

Jump into AI projects left and right, and if things go wrong—whether because regulators slap on a hefty fine or a cyberattack damages the company—just rely on cyber insurance? Insurers are now taking steps to limit coverage for AI risks—and … Continue reading →

Posted in Cloud, General, Security | Tagged , , | Leave a comment

Microsoft released Azure Sentinel (SIEM) Toolkit

Posted on 2026-05-01 by guenni

A quick note for readers responsible for securing Microsoft Azure cloud services. Microsoft has essentially released its entire Azure Sentinel (SIEM) toolkit as "open source." The Sentinel GitHub repository contains extensive documentation and over 1,000 pre-built threat detection rules. Read … Continue reading →

Posted in Cloud, General, Security | Tagged , , | Leave a comment

Exchange Online: TLS 1.0/1.1 will no longer be supported for POP and IMAP starting in July 2026

Posted on 2026-04-30 by guenni

Microsoft has announced that deprecated TLS versions and endpoints for POP and IMAP in Exchange Online will no longer be supported starting in July 2026. This is because Microsoft plans to completely discontinue support for deprecated TLS versions (TLS 1.0 … Continue reading →

Posted in Cloud, Security | Tagged , | Leave a comment

0patch fix for Windows Server telephony vulnerability CVE-2026-20931

Posted on 2026-04-25 by guenni

Windows Server contains a telephony vulnerability (CVE-2026-20931) that allows for privilege escalation. Microsoft patched the vulnerability in January 2026, but this has caused issues. ACROS Security recently released a 0patch micropatch to address this telephony vulnerability, CVE-2026-20931, for Windows Server … Continue reading →

Posted in Security, Windows | Tagged , | Leave a comment

Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...

Windows Defender 0-days: BlueHammer (patched) and RedSun (unpatched)

Posted on 2026-04-17 by guenni

There are several critical vulnerabilities in Microsoft Defender, that put Windows systems at risk. A security researcher has published an 0-day-exploit named BlueHammer on April 3, 2026, that has been patched on April 14, 2026. But there is still an … Continue reading →

Posted in Security, Windows | Tagged , , , | Leave a comment

Remote Desktop Phishing Protection in the April 2026 Update Causes Confusion

Posted on 2026-04-17 by guenni

[German]On April 14, 2026 (Patch Day), Microsoft released a fix for Remote Desktop to protect RDP connections against phishing attacks. Users now see a warning message when establishing an RDP connection. This has caused a lot of confusion and issues. … Continue reading →

Posted in issue, Security, Update, Windows | Tagged , , , , | Leave a comment

ESU Extension (Phase 2) for Exchange 2016/2019 and Skype

Posted on 2026-04-16 by guenni

[German]Microsoft has announced an extension of the Extended Security Update (ESU) program for certain legacy software. This includes Microsoft Exchange 2016/2019 and Skype for Business Server, for which ESU "Period 2" is now being launched. This means that organizations can … Continue reading →

Posted in Security, Software | Tagged , , , | Leave a comment

Microsoft April 2026 updates for Office and Windows

Posted on 2026-04-15 by guenni

On April 14, 2026 (the second Tuesday of the month, Microsoft's Patch Tuesday), Microsoft released cumulative updates for the still-supported client operating system versions of Windows 10 (with an ESU license) and Windows 11. Microsoft has also released security updates … Continue reading →

Posted in Security, Update, Windows | Tagged , , | Leave a comment

Microsoft Security Update Summary (April 14, 2026)

Posted on 2026-04-14 by guenni

[German]On April 14, 2026, Microsoft released security updates for Windows clients and servers, for Office, and for other products. The security updates address 163 vulnerabilities (CVEs), 8 of which are critical; 2 of these were classified as zero-day vulnerabilities (one … Continue reading →

Posted in Security, Update, Windows | Tagged , , , , | Leave a comment