Compute SHA-256/MD5 hashes, generate secure random tokens, and base64 encode/decode strings
Statistical analysis of CSV files: descriptive stats (mean, std, percentiles), Pearson correlation between columns, and IQR-based outlier detection
Audit project dependencies from package.json or requirements.txt — counts packages, classifies version specifiers, and flags unpinned or risky dependencies
Probe live network: ping hosts for latency, resolve DNS, check TCP port reachability, and fetch HTTP headers
Systematic checklist for reviewing code quality and correctness
Structured debugging methodology based on the scientific method