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ThreatsDay Bulletin: Defender 0-Day, SonicWall Brute-Force, 17-Year-Old Excel RCE and 15 More Stories

📅 16 April 2026 at 13:05 UTC📰 The Hacker NewsView original source ↗

You know that feeling when you open your feed on a Thursday morning and it's just... a lot? Yeah. This week delivered. We've got hackers getting creative in ways that are almost impressive if you ignore the whole "crime" part, ancient vulnerabilities somehow still ruining people's days, and enough supply chain drama to fill a season of television nobody asked for. Not all bad though. Some

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A week of high-profile cybersecurity incidents, including a SonicWall brute-force attack and an Excel Remote Code Execution (RCE) vulnerability, highlights the ongoing threat landscape. Hackers are exploiting vulnerabilities and pushing boundaries to achieve their malicious goals.

⚙️Technical Details
💥Impact Assessment
Severity: H
Who Is at Risk
Organizations with SonicWall firewalls and users of vulnerable Microsoft Excel versions
🛡️Recommended Actions
1Implement multi-factor authentication for SonicWall firewalls
2Update Microsoft Excel to the latest version (2019 or later) and apply security patches
3Regularly monitor system logs for suspicious activity
📦Affected Products
SonicWall NSA 2500 series firewallsMicrosoft Excel 2013-2019

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