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SEC-305 Security

Threat Modeling for Builders

Make 'what could go wrong?' a repeatable engineering step: data-flow diagramming, STRIDE-style analysis, risk ranking that survives arguments, and mitigations tied to backlog items — every learner threat-models a real system they own and leaves with an actionable register.

B4Professional
5modules
34skill atoms
1role journey
Curriculum

What this course covers.

5 modules, 34 named skill atoms. Expand any module to see them.

1Modeling Method7 skill atoms
scopeDFDstrust boundariesactors, processes, stores & flows notationchoosing the right abstraction levelout-of-scope & assumption statementstimeboxing the session
2Threat Enumeration7 skill atoms
STRIDE promptsabuse casesper-element STRIDE applicationattack trees for key assetsATT&CK-informed promptsinsider & supply-chain threatsCWE reference for weaknesses
3Risk Ranking7 skill atoms
likelihood/impact honestyassumptions logqualitative vs DREAD-style scoring critiqueexploitability vs business impactcalibration against real incidentsavoiding false precisionresolving ranking disagreements
4Mitigation Mapping7 skill atoms
controls → backlogacceptance criteriapreventive vs detective mitigation choicecost & latency trade-offsresidual risk statementreuse of existing platform controlsowner and due date assignment
5Live Model Workshop6 skill atoms
model your own systempeer challengerapid diagramming under time limitsregister handoff into the team backlogmodel refresh triggers & cadencedefending prioritisation decisions
Where it fits

SEC-305 in a role journey.

This course appears in 1 of our 45 role journeys. Here is what a learner takes immediately before and after it in each.

AppSec Engineer

Practitioner stage
SEC-304SEC-305SEC-301

Roles this course serves

The capability ladder

This course is authored to band B4.

Every course we run is written to one rung of the CASI ladder, so a plan can be assembled to take a team from where they are to where they need to be.

What do B1–B6 mean?The CASI Capability Ladder — click to expand

Every course targets a band on the CASI Capability Ladder — our six-band proficiency scale, anchored to open standards (O*NET, ESCO, NICE, NIST AI RMF, Bloom's). A band tells you how deep a course goes, and what evidence proves it.

What the learner can doTypical evidence
B1
AwareUnderstands concepts and vocabulary; uses tools with guidance
Knowledge checks
B2
FoundationPerforms standard tasks correctly in familiar contexts
Guided labs, autograded exercises
B3
PractitionerDelivers complete pieces of work independently
Scenario labs, proctored hands-on exams
B4
ProfessionalHandles production-grade complexity, trade-offs and failure modes
Break-fix drills, design defenses
B5
AdvancedEngineers systems end-to-end under constraints; leads others
Rubric-scored capstones, vivas
B6
ExpertSets direction; recognised authority across teams
Portfolio + panel evaluation

A note on B6. Courses in this catalog target B1–B5. B6 is not taught — it is recognised, through a portfolio and a panel, once someone is setting direction for others. Every journey here is built to land a learner at B5.

Next step

Run SEC-305 for your team.

This course runs at several lengths depending on how deep you need to go and how much of it your people already have. Tell us who is being trained and we will scope it.

Add it to a training plan Talk to our team Check your team’s level free