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Defensive-security study through investigative scenarios.

A vault for logins, passkeys and everyday records

A catalogue of deliberately vulnerable practice machines.

Turn network activity into structured investigation logs

Encrypted hosted mail with an explicit outside-image limitation

Supplementary Windows protection with a focus on USB devices

A Windows scanner with scheduling and Explorer integration

Malware scanning with a reviewable quarantine workflow

A downloadable Windows malware check

An on-demand scanner refreshed by downloading a new copy

Turn repeated log failures into temporary firewall bans

Assess Windows settings using a defined findings list

An offline Android authenticator with exportable records

Inspect Windows processes, handles and network activity

See app tracking destinations and choose Android blocking rules

Review Android app permissions in one place

Mac startup-disk access protection with explicit recovery choices

Cybersecurity instruction with purpose-built practice labs.

Manage OpenPGP keys and encryption integrations on Android

Browser with native blocking, encrypted DNS and optional VPN services

Correlate PCAP, Zeek logs and Suricata alerts

Analyze investigation observables through a shared engine

Linux firewall zones with separate runtime and permanent rules

A Mac network monitor with connection rules