ThreatsDay Bulletin: Defender 0-Day, SonicWall Brute-Force, 17-Year-Old Excel RCE and 15 More Stories
- Posted on April 16, 2026
- By The Hacker News
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- 1 min read
ThreatsDay Bulletin: Defender 0-Day, SonicWall Brute-Force, 17-Year-Old Excel RCE and 15 More Stories

This week's biggest hacks, zero-days, supply chain attacks, crypto theft, ransomware hits, and critical patches — all in one place.