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Apache SpamAssassin 4.0 introduces comprehensive Unicode support, enhanced geolocation, improved Bayesian filtering for non‑English mail, better SSL client certificate handling, new DKIM/SPF and URL‑expansion plugins, and an ExtractText plugin for attachment analysis, representing a major upgrade over the 3.4 series.
Recent research shows that nearly 60% of organizations suffered data loss due to employee email mistakes, highlighting the severe risks of phishing attacks and underscoring the need for realistic phishing simulation exercises to improve security awareness and protect against financial and reputational damage.
The article provides a comprehensive overview of phishing as a social‑engineering attack, detailing its various techniques—including email deception, spear‑phishing, whaling, malware‑based lures, domain spoofing, vishing, SMS and QR‑code scams—and offers practical defense measures such as anti‑phishing tools, multi‑factor authentication, content filtering, and security standards.