Security Tools

What AI genuinely does for defenders and attackers in 2026: triage and code review vs phishing at scale and vuln discovery, the dual-use problem behind the Fable 5 recall, and...

Tailscale IS WireGuard plus a control plane: NAT traversal, key distribution, ACLs, SSO. Raw WireGuard vs Tailscale vs Headscale, compared honestly with a clear verdict.

I run all three. The honest 2026 comparison after Broadcom: cost, clustering, ZFS vs vSAN, PBS vs Veeam, containers, and which hypervisor fits homelab, enterprise, and Windows shops.

Permission denied (publickey) walked through in the order a sysadmin checks it: agent, wrong key, authorized_keys, permissions, sshd_config, SELinux, AllowUsers. Exact commands to confirm and fix each.

Build .htpasswd lines in your browser with Apache MD5 (apr1), SHA-512 crypt or SHA1. Multi-user list, copy all, nginx and Apache snippets. Nothing leaves the page.

Build your DKIM DNS TXT record from any public key, with 255-char chunking and truncation warnings, or generate an RSA 2048 / Ed25519 test key pair in your browser.

Build a correct SPF TXT record in your browser. Provider presets, a live DNS lookup counter for the RFC 7208 10-lookup limit, and honest ~all vs -all advice.

Generate a correct DMARC TXT record in your browser: plain-English policy levels, staged rollout presets from monitoring to reject, and warnings when you skip reporting.

Generate strong passwords or passphrases locally with crypto.getRandomValues, real entropy in bits and zero server calls. Free, no signup, copy in one click.

An interactive, scored WordPress security hardening checklist: 34 controls across seven layers (WAF, HTTPS and headers, login, updates, files and wp-config, database, backups and monitoring) with copy-paste wp-config, .htaccess, nginx...