Security & Compliance

Password entropy, encryption keys, GDPR retention, and HTTP security headers.

• Password Crack Time Calculator and Entropy Checker – Test a password: entropy in bits, brute-force crack time on GPUs (including an RTX 4090) and a passphrase generator worth about 86 bits.
• Encryption Key Strength Checker: RSA, ECC and AES – Pick an algorithm and key size to get its security level in bits and whether it meets NIST and ANSSI guidance.
• GDPR Data Retention Periods in France (CNIL Guide) – Pick a data type (prospects, invoices, applicants, logs…) to see how long it can be kept under French practice.
• DDoS Attack Cost Estimator for Your Cloud Bill – Enter requests per second, duration, response size and pricing to estimate the bill for an unmitigated attack.
• HTTP Security Headers Generator: CSP, HSTS and More – Tick the headers you need and copy a ready-made configuration for Nginx, Express, Vercel or Apache servers.
• GDPR Fine Calculator: Article 83 Risk Assessment – Estimate statutory maximum GDPR penalties (up to €20M or 4% of global turnover) and evaluate compliance severity factors.
• EU DSA Compliance Checker: Cookie Consent and Fine Risk – Assess your Digital Services Act scope, detect dark pattern cookie banners, and quantify statutory fine exposure up to 6% of global turnover.
• IP Subnet Calculator: IPv4 CIDR Mask, Host Range, Wildcard – Enter an IPv4 address and a CIDR prefix to get the network and broadcast addresses, usable host range, subnet mask, wildcard mask, binary view, class and address type.
• Pwned password check: has my password been leaked? (HIBP) – Check whether a password appears in known data breaches without sending it: only 5 characters of its SHA-1 hash ever leave your browser.
• What is my IP address? Public IPv4 and IPv6 lookup – Shows the public IP address of your connection in IPv4 and IPv6, and explains the difference between public IP, private IP and NAT.
• Package vulnerability check: npm, PyPI, Maven CVEs and fixes – Enter a package and version to list known vulnerabilities from the OSV database: CVE IDs, published severity and the fixed version, for npm, PyPI.