Tribar StudioCareers
Back to all tribes
∑

Sigma

Security. Privacy. Compliance. Threat modeling. Infrastructure hardening.

Mission

Every feature has an attack surface. Sigma owns it.

Sigma is the security tribe — embedded across all other tribes rather than siloed. They threat-model every feature, harden infrastructure, manage compliance, and ensure that Tribar's products are safe by design, not by audit.

“Every feature has an attack surface.”

— Sigma's first principle. Security is not a layer — it's a property of every decision.

What we measure

Intrapersonal

Security posture per engineer — is every team member security-conscious?

How: Phishing simulation click rate, security training completion rate, secure coding practice adoption in PRsWhere: Security training platform, PR review tooling (secret scanning), phishing simulation resultsWhen: Training completion: quarterly. Phishing: monthly random campaigns. PR scanning: continuous.Signal: Phishing click rate >10%, or secret-in-code incidents increaseInstrument: Security training LMS, simulated phishing platform, secret scanning (git hooks/CI), PR security linting
Interpersonal

Security culture — do teams naturally consider security in their workflows?

How: Threat models submitted before feature work begins, security review requests (not mandated), security questions in sprint planningWhere: Feature development workflow, sprint planning documents, cross-tribe security channelWhen: Per feature tracked; quarterly culture surveySignal: <70% of features have a threat model before development startsInstrument: Threat model integration in feature template, security review ticket tracking, culture survey
Collective

System resilience — how well can the organization withstand and recover from attacks?

How: Mean time to detect (MTTD), mean time to respond (MTTR), tabletop exercise performance, blast radius of actual incidentsWhere: Security operations dashboard, incident response platform, tabletop exercise reportsWhen: Per incident; tabletop exercises quarterly; full review annuallySignal: MTTD >24 hours for any severity level, or MTTR >4 hours for criticalInstrument: SIEM/SOAR platform, incident response tooling, tabletop exercise framework

Compliance integrity — are we compliant by design, or compliant by audit?

How: Controls automation percentage, audit finding recurrence rate, time-to-close for compliance gapsWhere: Compliance management platform, audit trackerWhen: Continuous monitoring; quarterly compliance reviewSignal: Same control fails consecutive audits, or >30% of controls are manual (not automated)Instrument: Compliance automation platform, control monitoring, audit finding tracker

◷ Rhythms

Threat model review

Per feature (before development)

Every new feature goes through a Sigma threat model before code is written. Not after. Before.

Security by design, not by audit.

Patch Tuesday

Weekly

Sigma reviews all outstanding vulnerabilities, prioritizes patches, and coordinates with Delta/Orbit on deployment.

Keeps the vulnerability backlog short.

Tabletop exercise

Quarterly

Simulated attack scenario. Sigma, Delta, Orbit, and leadership participate. "What do we do when X happens?"

Tests incident response without actual incidents.

Security awareness campaign

Quarterly

Theme-based security training (phishing, password hygiene, AI risks, supply chain security). Gamified.

Security is everyone's job, not just Sigma's.

Tools & artifacts

Threat model template

document

Standardized threat model format: asset, threat, attack vector, likelihood, impact, mitigation. Integrated into feature spec template.

SigmaDeltaForge

Vulnerability tracker

platform

All known vulnerabilities tracked with severity, affected systems, patch status, and SLA.

SigmaDeltaOrbit

Incident response playbook

document

Step-by-step playbook for every incident type: data breach, service compromise, supply chain attack, insider threat.

SigmaOrbitLeadership

Compliance dashboard

platform

Real-time compliance status across all certifications (SOC2, ISO27001, GDPR, HIPAA). Controls status, evidence collection, audit readiness.

SigmaLeadership

Security champions program

ceremony

One security champion per tribe. Sigma trains them. They're the first line of security defense in their tribe.

SigmaAll tribes

Responsibilities

  • Security architecture review
  • Threat modeling per feature
  • Infrastructure hardening
  • Compliance and certifications
  • Vulnerability management
  • Security awareness and training
  • Penetration testing
  • Third-party security review

Deliverables

Threat models per feature
Security audit reports
Compliance documentation
Hardening guidelines
Security training materials
Incident response playbooks
Success metric

Mean time to detect and respond. Not "no incidents" — "incidents caught and contained quickly."

Relationships

How Sigma connects to every other tribe — what flows, when, and through what ritual.

Collaborates
△
DeltaPer feature before dev starts; per vulnerability

Threat models per feature, vulnerability reports, security patches, secure coding standards

Ritual:Threat model review + Patch Tuesday
If this breaks: Features ship with unexamined attack surfaces
Shadow risk: Sigma may turn a valid risk into total authority and shame partners for not seeing danger sooner.
Repair: Classify the risk and reversibility, explain the threat without contempt, and co-design the safest viable path.
⬡
ForgePer platform component

Security architecture patterns, auth libraries, encryption standards, hardening guidelines for the platform

Ritual:Security architecture review
If this breaks: Platform components lack built-in security — security becomes a bolt-on
Shadow risk: Sigma may turn a valid risk into total authority and shame partners for not seeing danger sooner.
Repair: Classify the risk and reversibility, explain the threat without contempt, and co-design the safest viable path.
◎
OrbitPer incident; quarterly access review

Incident response execution, security patch deployment, access control management

Ritual:Incident response + quarterly access review
If this breaks: Security patches go undeployed; access control drifts
Shadow risk: Sigma may turn a valid risk into total authority and shame partners for not seeing danger sooner.
Repair: Classify the risk and reversibility, explain the threat without contempt, and co-design the safest viable path.
Reviews
◉
EchoPer new research initiative involving personal data

User research data handling, privacy impact assessments, consent framework reviews

Ritual:Privacy impact review
If this breaks: Echo collects data that violates user privacy expectations
Shadow risk: Sigma may turn a valid risk into total authority and shame partners for not seeing danger sooner.
Repair: Classify the risk and reversibility, explain the threat without contempt, and co-design the safest viable path.
♡
PulsePer new data pipeline; quarterly model audit

Data handling in experiments, PII management in analytics pipelines, model fairness audits

Ritual:Data ethics review
If this breaks: Pulse's experiments or models introduce bias or privacy risk
Shadow risk: Sigma may turn a valid risk into total authority and shame partners for not seeing danger sooner.
Repair: Classify the risk and reversibility, explain the threat without contempt, and co-design the safest viable path.
The tribe under strain

To prevent shame, danger, and irreversible failure by making the standard absolute.

This is a protective pattern, not a verdict. It describes what can happen when the tribe's gift is driven by fear, anger, grief, scarcity, or status.

What activates it

A risk is minimized, a rule is bypassed, or someone asks Sigma to accept uncertainty without enough protection.

How it can appear

Sigma can become punitive, rigid, perfectionistic, or use fear and veto power to end discussion.

What it costs

Partners hide work, security arrives late, and “safe” becomes indistinguishable from “under Sigma's control.”

The integrated gift

Protective rigor that distinguishes catastrophic risk from tolerable learning and helps others own safety.

Core question

How can this be exploited?

Information pipeline
1
EchoUnderstand humans
2
AtlasUnderstand markets
3
DeltaBuild solutions
4
ForgeCreate leverage
5
PulseMeasure outcomes
6
OrbitEnsure adoption
7
ThreadPreserve knowledge
8
HorizonExplore the unknown
9
VaultRun the business
Operating modes
Explorer

Discovers novel attack vectors, researches emerging threats, runs penetration tests

Builder

Builds security tooling, auth libraries, encryption infrastructure

Optimizer

Streamlines security review processes, reduces false positives, automates compliance

Guardian

The core Sigma identity — enforces security standards, blocks unsafe patterns, protects users

Catalyst

Creates security training, runs tabletop exercises, makes security knowledge accessible

Visionary

Designs the future of Tribar's security architecture — zero-trust, zero-knowledge, wherever possible

Open roles
Sigma Guardian Sigma Explorer Sigma Builder
NextEcho