Category Archives: Security

I: Microsoft Defender flags Synology backups as a Trojan (August 3, 2026)

Posted on 2026-08-04 by guenni

[German]A German blog reader contacted me about a strange behavior, he faced on hypervisors. Microsoft Defender flags Synology backups on the affected user's servers as a Trojan. As a result, the backups no longer run. The reader wrote to me … Continue reading →

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Chrome 151.0.7922.71/.72 fixes 370 vulnerabilities

Posted on 2026-07-30 by guenni

[German]On July 29, 2026, Google updated the Chrome browser to versions 151.0.7922.71/.72. The update in the 150 development branch is available in the Stable Channel and fixes 370 vulnerabilities. Users should therefore update Chromium-based browsers and their derivatives as soon … Continue reading →

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FortiBleed: Administrator Passwords Compromised on 74,000 Fortinet Firewalls

Posted on 2026-06-18 by guenni

[German]Operators of Fortinet products are at risk of having their instances compromised by attackers. This is because the passwords for administrator access to these instances have been cracked. Attackers can take control of the installations and manipulate them at will. … Continue reading →

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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 →

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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 →

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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 ...

Microsoft says that Defender is sufficient for virus protection

Posted on 2026-05-01 by guenni

When it comes to virus protection and securing Windows, the market for third-party antivirus solutions is shrinking. Microsoft claims that Microsoft Defender, which comes bundled with Windows, is actually sufficient as a security solution to protect against viruses and malware.

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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 →

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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 →

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Cloud Code Coding Agent Deletes Company Database and Backups

Posted on 2026-04-28 by guenni

That didn't quite go as planned: A Cloud Code Coding agent (Cursor) caused a database to be deleted by a company's infrastructure provider. At the same time, the backups were also deleted by the infrastructure provider because they had linked … Continue reading →

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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 →

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