Computer Science
Security & Cyber Defense Challenges
Security & Cyber Defense challenges put you inside the work of protecting systems from real attack. You'll build skills around the CIA triad, authentication, identity & access management and network security, and learn to work the OWASP Top 10 and run vulnerability scanning the way defenders do.
From there you'll tackle the harder edges — threat modeling, the MITRE ATT&CK framework, SIEM operations and incident response — moving into cyber risk management, Zero Trust architecture and red team operations. Each challenge you solve earns a verified credential you can share with recruiters.
- StrategySeniorNew
Run a Mock Algorithmic-Discrimination Investigation for a Hiring-Tech Vendor
As a 3-person team, design and execute a 3-week mock inquiry. Produce: (1) the demand letter you imagine the regulator sending (scope, legal basis, data requested); (2) the vend…
- Regulatory Analysis
- Algorithmic Fairness
- Ai Governance
Open coursework - CodeBeginnerNew
Implement Authentication and Access Control for a Civic Portal
Receive the current Next.js + Express prototype, the data model (residents, requests, documents, audit log), and the 4 staff roles (resident, clerk, supervisor, auditor) with th…
- Authentication
- Authorization
- Rbac
Introduction to Computer Security - CodeIntermediateNew
Add Differential Privacy to a Mental-Health App's Analytics Dashboard
Wrap the analytics module in `analytics_module.py` (provided) with a differential-privacy layer built on OpenDP. Implement epsilon-delta accounting: add Laplace noise to counts …
- Differential Privacy
- Privacy Budget
- Python Programming
Open coursework - ResearchIntermediateNew
Red-Team a Customer-Service Chatbot for Jailbreak Resistance
Use a published taxonomy of jailbreak categories (prompt injection, persona override, encoded payloads, multi-turn escalation, refusal bypass, tool-misuse). For each category, d…
- Red Teaming
- Jailbreak Analysis
- LLM Evaluation
Open coursework Develop in-demand professional skills.
Each challenge names the skills it strengthens. Over time, your profile fills with the competences a hiring manager would actually look for.
Why Ewance
- AnalysisBeginnerNew
Exploit and Remediate Eight Web Flaws on a FinTech Practice Range
Using the eight challenge specifications in the provided challenge specification brief and the representative Rails module in the provided vulnerable application source bundle (…
- Web Security
- OWASP Top 10
- Penetration Testing
Open coursework - DesignSeniorNew
Design a Cross-Chain Bridge Protocol with Honest Threat Model
Read the Vitalik 'cross-chain interoperability' essay and survey 3 existing bridge designs (lock-and-mint, atomic-swap, optimistic-rollup-native). Design your protocol around a …
- Blockchain Protocols
- Smart Contracts
- Solidity
Open coursework - CodeBeginnerNew
Build a Secure-Coding Linter Ruleset for a Backend Team
Using the findings log, study the twelve documented security-review findings and confirm the three repeat patterns. Then build a custom linter ruleset — choose Semgrep or custom…
- Secure Coding
- Static Analysis
- Semgrep
Open coursework - AnalysisIntermediateNew
Threat Model a Water-Utility SCADA Network Before a Migration
Review provided network diagrams (current and proposed), the asset inventory (around 180 PLCs (programmable logic controllers), 22 engineering workstations, 6 historian servers)…
- Threat Modeling
- Ics Security
- Scada
Cyber-Physical and Cybercrime Topics - Browse challenges
Explore role
Strategy Analyst
Frame the business question, model the options, build the recommendation. From market sizing to competitive analysis, this role is where strategy consulting meets in-house decision-making.
- DesignIntermediateNew
Passive Intrusion Detection for an Auto Supplier's Plant Network
Using the provided plant network diagram, design a passive (listen-only) sensor architecture that pairs Zeek and Suricata at the office-to-factory boundary plus three production…
- Intrusion Detection
- Ot Security
- Zeek
Open coursework - ResearchIntermediateNew
Run an Alignment Probe on a Coding Assistant
You will design 240 probe prompts across 3 classes: (1) over-refusal (innocuous coding asks the model should fulfill), (2) insecure code patterns (asks where the model should wa…
- Red Teaming
- Alignment Evaluation
- LLM Evaluation
Large Language Models - DesignIntermediateNew
Design a Secure-by-Default IoT Device Provisioning Flow
Design end-to-end provisioning: factory bootstrap (per-device key pair burned at manufacture), installer flow (BLE-driven activation, Wi-Fi handoff), cloud-side enrollment (mTLS…
- Iot Security
- Secure Provisioning
- Mutual Tls
Cyber-Physical and Cybercrime Topics - PresentationBeginnerNew
Run an Incident-Response Tabletop for a Healthtech On-Call Team
Design 3 tabletop scenarios with realistic timeline injects (every 5-10 minutes, new info arrives). Run the tabletop hybrid (in-person + remote) with the 8 on-call engineers + 2…
- Incident Response
- Tabletop Exercises
- Incident Command System
Open coursework Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
How it works
From brief to credential, in six steps.
Step 01
Browse challenges aligned to your studies.
Step 02
Accept the one that fits your goals.
Step 03
Work through it with AI Copilot guidance.
Step 04
Submit for structured evaluation.
Step 05
Earn a verified credential.
Step 06
Add it to LinkedIn with one click.
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