BlackShield Research

Cybersecurity developments, translated into defensive action.

Evidence-led analysis for security leaders and engineers, with direct links to every source.

All research and hardening guides

Source-grounded security analysis and practical hardening guidance in one archive.

Showing 1-8 of 8

Hardening guide8 min read25 min implementation

Linux SSH hardening baseline that does not lock you out

A practical OpenSSH baseline for reducing password, root-login, forwarding, and brute-force risk while keeping a tested rollback path.

LinuxOpenSSHintermediate
Hardening guide8 min read30 min implementation

AWS S3 exposure baseline for public access and recovery

A compact S3 baseline for account-level public access blocking, bucket recovery controls, and evidence that the setting is really applied.

Object storageAWSintermediate