In the period covering December 13-14, 2025, the cybersecurity landscape was dominated by critical vulnerability disclosures and active exploitation campaigns. Apple released an emergency patch for two zero-day flaws in iOS being used in targeted spyware attacks. CISA added a high-severity RCE vulnerability in Sierra Wireless routers to its KEV catalog. Meanwhile, ransomware groups KillSec and Qilin continued their global extortion campaigns, and several major data breaches came to light, including a massive 16TB database exposing 4.3 billion records and a breach at Canadian airline WestJet affecting 1.2 million passengers.
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