Topic: spearphishing emails
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Fortune 100 Firm Hit by New PDFSider Windows Malware
A Fortune 100 company was compromised by a novel, stealthy malware called PDFSider, delivered via social engineering and a spearphishing email that used a legitimate, signed PDF24 Creator executable to side-load malicious code. The PDFSider backdoor exhibits advanced persistent threat (APT) chara...
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Urgent Windows Flaw CVE-2025-9491 Actively Exploited by Hackers
A critical Windows security flaw (CVE-2025-9491) is being actively exploited by hacking group UNC6384, enabling unauthorized code execution through malicious LNK files in spearphishing campaigns targeting European diplomatic and aviation entities. The exploitation involves a multi-stage malware c...
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