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SET v1.1 Codename: "Happy Holidays" Released

ID: fc00b977-49a1-5651-8abf-51f004ec2942

STIX ID: report--fc00b977-49a1-5651-8abf-51f004ec2942

Feed Name: TrustedSec blog

Date Published: 2025-03-19

Date Updated: 2026-05-01

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**Executive summary:** This release announcement for the Social-Engineer Toolkit (SET) "Happy Holidays" version describes new Metasploit-based client-side attack modules, web server threading and performance optimizations, a UPX packing option for payloads, and configuration changes to control Java applet redirection; it is a software/tool release note and does not report a specific security incident.

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