Frequently Asked Questions
Everything you need to know about encrypted sharing, zero-knowledge security, and how SecureBin.ai protects your sensitive data. Can't find what you're looking for? Contact us.
Encryption & Security 6 questions
Zero-knowledge encryption means the service provider cannot access your data, even if they wanted to. With SecureBin, encryption and decryption happen entirely in your browser using AES-256-GCM. The decryption key is stored in the URL fragment (after the #), which is never sent to the server. This means even if our servers were compromised, attackers would only find unreadable ciphertext. Learn more about how SecureBin works.
AES-256 (Advanced Encryption Standard with 256-bit keys) is the gold standard in symmetric encryption, trusted by governments, banks, and military organizations worldwide. A brute-force attack against a 256-bit key would require 2256 attempts, which is computationally infeasible with any current or foreseeable technology. SecureBin uses AES-256-GCM, which adds authenticated encryption to prevent tampering. Try our Text Encryption tool to see it in action.
End-to-end encryption (E2EE) ensures data is encrypted on the sender's device and only decrypted on the recipient's device. No intermediary, including the service provider, can read the data in transit or at rest. SecureBin implements E2EE by encrypting your content in your browser before it is transmitted to our servers, and the recipient decrypts it in their browser using the key embedded in the shared URL. Our zero-knowledge architecture guarantees that we never see your plaintext data.
Encryption in transit (TLS/SSL) protects data while it travels between your device and a server. Encryption at rest protects data while it is stored on a server's disk. SecureBin provides both: TLS encrypts the connection, and AES-256-GCM encrypts the content before it leaves your browser, so the stored data on our servers is always encrypted ciphertext. You can verify this with our SSL Checker.
256-bit encryption provides 2256 possible key combinations, a number so large it exceeds the number of atoms in the observable universe. Even with all the world's computing power combined, brute-forcing a single AES-256 key would take longer than the age of the universe. It is the same standard used by the U.S. government for classified information (TOP SECRET level).
Properly implemented AES-256 encryption cannot be broken through brute force with current technology. However, encryption can be compromised through weak passwords, key management flaws, or implementation bugs. SecureBin mitigates these risks by using the browser's native Web Crypto API (a battle-tested implementation), PBKDF2 for password-based key derivation, and zero-knowledge architecture where the key never touches the server. Use our Password Strength Checker to ensure your passwords are strong.
SecureBin Product 8 questions
SecureBin.ai is a free, zero-knowledge encrypted pastebin that lets you securely share text, code, passwords, and files. You paste your content, it gets encrypted in your browser using AES-256-GCM, and you receive a shareable link. The decryption key stays in the URL fragment and is never sent to our servers. You can also set expiration times and enable burn-after-reading for one-time access. Read more on our About page.
Yes, SecureBin is completely free for individual use. You can create encrypted pastes, use burn-after-reading, set expiration times, and access all 70+ developer tools at no cost. We also offer Pro and Enterprise plans with additional features like larger paste sizes, team management, and API access.
Burn after reading is a security feature that automatically and permanently deletes a shared secret after it has been viewed once. When you enable this option on SecureBin, the encrypted data is destroyed from our servers the moment the recipient opens the link. This ensures sensitive information like passwords or API keys cannot be accessed again, even if the link is intercepted later.
When a paste reaches its expiration time, the encrypted data is permanently deleted from our servers using Cloudflare KV's built-in TTL (time-to-live) mechanism. There are no backups or recovery options once a paste expires. You can set expiration from 5 minutes to 30 days, or use burn-after-reading for immediate deletion after one view.
No. SecureBin uses zero-knowledge encryption, which means we are technically unable to read your data. All encryption and decryption happens in your browser using the Web Crypto API. Our servers only ever see encrypted ciphertext, and the decryption key (stored in the URL fragment after the #) is never transmitted to us. You can verify this by inspecting the network requests in your browser's developer tools. See our Privacy Policy for details.
Receive Mode lets you securely collect secrets from others. You create a receive link on SecureBin, then send that link to the person who needs to share a secret with you. They paste the secret into the form, it gets encrypted in their browser, and only you can decrypt it. The secret is automatically deleted after you read it. No accounts or software installation required.
SecureBin stores only encrypted ciphertext on Cloudflare's globally distributed KV storage. The actual content of your paste is encrypted in your browser before transmission, and we never have access to the decryption key. All stored data has a time-to-live (TTL) and is automatically deleted when it expires. We do not create backups of paste data. See our Privacy Policy for complete details.
SecureBin's client-side encryption code is designed to be fully auditable. You can inspect all encryption logic directly in your browser's developer tools to verify that encryption happens before any data leaves your device. We encourage security researchers and developers to review our implementation for transparency and trust. Read more on our About page.
Password & Credential Sharing 6 questions
The safest way to share passwords is through an encrypted, self-destructing channel. SecureBin lets you paste a password, encrypt it with AES-256-GCM in your browser, and generate a one-time link that auto-deletes after viewing. Never share passwords over email, Slack, SMS, or any unencrypted channel, as these can be intercepted, logged, or stored indefinitely on third-party servers. Use our Password Generator to create strong passwords before sharing them.
No. Email is inherently insecure for sharing passwords. Emails are stored in plaintext on mail servers, can be forwarded without your knowledge, and remain searchable in archives indefinitely. Instead, use an encrypted sharing tool like SecureBin with burn-after-reading enabled. The password is encrypted end-to-end and destroyed after a single view.
Use SecureBin to create an encrypted paste containing the API key, enable burn-after-reading, and share the link with your developer over your team's communication channel. The API key is encrypted with AES-256-GCM in your browser, and the link self-destructs after one view. This is far safer than pasting keys in Slack, email, or Jira tickets where they persist in logs and search indexes. Check if your keys have already been exposed with our Exposure Checker.
To send bank account or routing numbers securely, use SecureBin with a password and burn-after-reading enabled. Add a strong password for an extra layer of encryption, then share the link through one channel and the password through a different channel (for example, link via email and password via phone call). The data is encrypted end-to-end and destroyed after viewing.
Yes. Instead of texting or emailing your WiFi password, paste it into SecureBin, enable burn-after-reading, and share the encrypted link with your guest. They view it once, connect to your network, and the password is permanently deleted. You can also use SecureBin's QR Code Generator to create a scannable WiFi QR code for easy connection.
Teams should never share credentials through Slack, email, or shared documents. Use SecureBin to create encrypted, self-destructing links for one-time credential sharing. For ongoing credential management, consider a dedicated password manager combined with SecureBin for ad-hoc sharing. SecureBin's Receive Mode is ideal for securely collecting credentials from team members. See our Enterprise plan for team features.
Compliance & Privacy 5 questions
SecureBin's zero-knowledge architecture aligns with HIPAA's encryption requirements. Since all data is encrypted client-side with AES-256-GCM and we never have access to decryption keys, protected health information (PHI) is never exposed to our servers in readable form. However, organizations subject to HIPAA should consult their compliance officer and consider our Enterprise plan for a Business Associate Agreement (BAA).
SecureBin's zero-knowledge encryption, automatic data expiration, and audit-friendly architecture support SOC 2 trust principles including security, availability, and confidentiality. Our infrastructure runs on Cloudflare's SOC 2 Type II certified platform. For enterprise compliance needs, contact us about our Enterprise plan which includes additional compliance documentation and support.
SecureBin supports GDPR compliance through data minimization (we only store encrypted ciphertext), automatic deletion via time-to-live expiration, and zero-knowledge architecture that means we cannot access personal data even if required. No user accounts are needed for basic use, reducing personal data collection. Read our Privacy Policy for complete details on data handling.
Yes. SecureBin is designed with privacy by default. We do not sell personal information, we minimize data collection, and our zero-knowledge architecture ensures we cannot access the content of your encrypted pastes. Users can use SecureBin without creating an account, and all data is automatically deleted after expiration. See our Privacy Policy for complete details.
SecureBin's AES-256 encryption meets PCI DSS requirements for strong cryptography. When sharing payment card data or credentials related to cardholder environments, SecureBin's burn-after-reading feature ensures data is not retained beyond its intended use. However, PCI DSS compliance involves many controls beyond encryption. Consult your QSA (Qualified Security Assessor) for guidance on your specific compliance requirements.
Comparisons & Alternatives 5 questions
Pastebin stores content in plaintext on their servers, meaning they (and anyone who gains access to their systems) can read your pastes. SecureBin encrypts everything in your browser with AES-256-GCM before transmission, so our servers only ever store unreadable ciphertext. SecureBin also offers burn-after-reading, automatic expiration, password protection, and Receive Mode, none of which are available on Pastebin. See our full comparison guide.
Both services offer one-time secret sharing, but SecureBin uses client-side (zero-knowledge) encryption whereas OneTimeSecret encrypts server-side. With server-side encryption, the service has access to your plaintext data during processing. SecureBin's browser-based AES-256-GCM encryption means your data is never exposed in plaintext to any server. SecureBin also offers 70+ additional developer and security tools.
Yes, for sensitive content. Email attachments are stored in plaintext on multiple mail servers, can be forwarded without your control, and remain in email archives indefinitely. SecureBin encrypts files in your browser, offers automatic expiration, and supports burn-after-reading for one-time access. The recipient gets a secure link instead of a permanent, unencrypted attachment.
Slack messages persist in search history and are stored on Slack's servers in readable form, making it unsuitable for sharing passwords, API keys, or sensitive credentials. Use SecureBin to create an encrypted, self-destructing link, then share that link in Slack. The secret itself is never exposed in Slack's logs. For team-wide credential management, combine SecureBin with a password manager.
Password managers (like 1Password or Bitwarden) are designed for long-term credential storage and team vaults. SecureBin is designed for one-time, ephemeral sharing of secrets. They serve complementary purposes: use a password manager to store credentials, and use SecureBin when you need to securely share a credential with someone outside your vault, especially with burn-after-reading for one-time access.
Technical 5 questions
Yes. SecureBin offers a REST API for programmatic secret sharing. You can create encrypted pastes, retrieve them, and manage expiration via API calls. The API supports the same zero-knowledge encryption model as the web interface. API access is available on Pro and Enterprise plans. See our API documentation for endpoints, authentication, and code examples.
SecureBin uses AES-256-GCM (Advanced Encryption Standard with 256-bit keys in Galois/Counter Mode) via the browser's native Web Crypto API. GCM mode provides both confidentiality and authenticity, meaning data cannot be read or tampered with. For password-protected pastes, PBKDF2 with a high iteration count derives the encryption key from your password. Try it yourself with our Hash Generator.
You can set expiration from as short as 5 minutes to as long as 30 days. Once the expiration time is reached, the encrypted data is permanently and automatically deleted from our servers. You can also enable burn-after-reading for instant deletion after the first view. There is no way to recover a paste after it has expired or been burned. Create a paste now.
SecureBin is currently offered as a hosted service running on Cloudflare's global edge network. For organizations that require on-premises deployment, our Enterprise plan includes options for dedicated infrastructure and custom deployments. Contact our enterprise team to discuss self-hosting requirements for your organization.
SecureBin can encrypt any file type, including documents, images, code files, configuration files, and archives. The file is encrypted in your browser using AES-256-GCM before being uploaded. File size limits depend on your plan: free users get generous limits, while Pro and Enterprise plans support larger files. All file types receive the same military-grade level of encryption.
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