
Locked In: Prep for SecurityX
CAS-005 study companion
About
What's New in Locked In
2.3
October 23, 2026
Lessons now follow CompTIA's numbered CAS-005 objectives, so topic 3.4 in the app is objective 3.4 in CompTIA's PDF. • 26 new lessons (79 to 105), covering hardware security, automation and SCAP, IAM troubleshooting, threat hunting, SIEM, DNS and email security, access control models, resilience, and AI-enabled attacks • 150 practice questions (up from 100). Questions that repeated a lesson quick check were rewritten, and every domain now holds more questions than a timed sitting draws, so repeat sittings differ • 164 flashcards (up from 101), 114 glossary terms (up from 83), and 21 PBQ-style activities (up from 15) • Updated facts: NIST SP 800-61 Rev. 3, the OWASP 2025 lists, SLSA v1.0, the EU-US Data Privacy Framework, GDPR breach thresholds, DORA penalties, FIPS 140-3, ISO/IEC 27701:2025, the RFC 3227 order of volatility, and the 15 MITRE ATT&CK Enterprise tactics • Rewritten questions start fresh in your review queue, and a timed practice session saved in version 2.2 cannot be resumed • Glossary definitions that repeat a paid flashcard now open with Full Unlock • The home-screen name is now Locked In! SecurityX
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