By using CifraGuard, you agree to these Terms of Service. These terms are written in plain language on purpose. Please read them carefully.

1. Who Provides the Service

CifraGuard is a free side project operated by Marek Zarzycki under the project/portfolio name NubeCode.

NubeCode is a project name and is not a separate legal entity.

In these terms, "CifraGuard," "NubeCode," "we," "us," and "our" refer to Marek Zarzycki operating the CifraGuard side project under the NubeCode project name.

2. The Service

CifraGuard lets you encrypt a file in your browser and have the encrypted file and its decryption key delivered by email to addresses you choose.

The service is intended as a lightweight tool for small, non-critical file transfers. It is provided free of charge.

CifraGuard is designed so that files are encrypted before they are sent for delivery. However, you are responsible for deciding whether the service is appropriate for the type of file you want to send.

Do not use CifraGuard for emergency, critical, highly sensitive, regulated, or high-risk communications where failed delivery, delayed delivery, incorrect delivery, or unauthorised access could cause serious harm.

3. Service Limits

The current service limits are:

• Maximum file size: 10 MB per file
• Rate limit: 2 file transfers per hour per IP address
• Contact form limit: 1 contact message per hour

Executable file types, including but not limited to .exe, .bat, .cmd, .sh, .apk, .msi, .ps1, cannot be uploaded directly. If you have a legitimate reason to send such files, place them in a .zip archive first.

We may change these limits at any time to protect the security, availability, and stability of the service. The current limits are shown on the CifraGuard website.

4. Acceptable Use

You agree not to use CifraGuard to:

• send malware, viruses, spyware, ransomware, or any content intended to harm recipients, systems, networks, or devices;
• distribute illegal content or content that infringes the rights of others;
• send files that you do not have the right to send;
• harass, threaten, deceive, abuse, or spam recipients;
• send files to recipients who have not agreed to receive them;
• impersonate another person or misrepresent who you are;
• attempt to bypass rate limits or security controls;
• automate high-volume use of the service without permission;
• probe, scan, overload, disrupt, or attack the service or its infrastructure;
• use the service in a way that violates applicable law.

We may block traffic, refuse transfers, delete pending transfers, suspend access, or take other reasonable measures where we believe this is necessary to protect the service, users, recipients, infrastructure, or legal compliance.

Where legally required, we may report unlawful activity to the relevant authorities.

5. Your Responsibility

You are responsible for the files you send and for having the legal right to send them.

You are responsible for entering correct recipient email addresses — both the address that receives the encrypted file and the address that receives the decryption key.

Anyone who obtains both the encrypted file and the decryption key may be able to decrypt the file. Treat decryption keys like passwords.

You are responsible for making sure that the recipient is willing to receive the file.

You should keep your own backup copy of any file you send. CifraGuard is not a backup, storage, or archiving service.

6. Encryption and Decryption Keys

CifraGuard is designed to encrypt files in the browser before delivery.

The decryption key is required to decrypt the encrypted file. The key is generated in your browser and passes through our server and our email delivery provider once, in transit, solely so it can be emailed to the address you choose. It is not stored on our servers. If the decryption key is lost, the file may not be recoverable — we cannot recover a lost key because we do not keep a copy.

You should understand that email delivery involves third-party email infrastructure. Email providers, spam filters, mail servers, or other technical systems may process delivery-related data.

More information about how data is processed is available in the Privacy Policy.

7. Email Delivery

CifraGuard uses email delivery to send the encrypted file and/or decryption key to the addresses you choose.

We do not guarantee that every email will be delivered successfully.

Emails may be delayed, blocked, rejected, filtered as spam, or fail for reasons outside our control, including recipient mail server settings, spam filters, incorrect email addresses, attachment restrictions, or third-party email provider issues.

You are responsible for checking that the recipient has received the necessary email or emails.

8. Availability and Changes to the Service

CifraGuard is provided as a free side project.

We may change, limit, suspend, or discontinue the service or any part of it at any time, with or without notice.

We may also perform maintenance, update features, change technical providers, or remove functionality where needed for security, stability, cost control, or legal reasons.

We do not guarantee that the service will always be available, uninterrupted, secure, or error-free.

9. Privacy

Our handling of personal data is described in the Privacy Policy, which forms part of these terms.

The Privacy Policy explains what data we process, why we process it, how long we keep it, and which third-party providers may process data on our behalf.

By using CifraGuard, you agree that we process the data necessary to provide, protect, monitor, and improve the service as described in the Privacy Policy.

10. Abuse Reports

If you believe CifraGuard has been used to send malware, illegal content, abusive content, spam, or other harmful material, please contact us via the contact page.

We may review abuse reports and take reasonable action where appropriate, including blocking traffic, refusing transfers, deleting pending transfers, restricting access, or reporting unlawful activity where legally required.

11. No Warranty

CifraGuard is provided free of charge on an "as is" and "as available" basis.

To the maximum extent permitted by law, we make no warranties or guarantees that:

• the service will be uninterrupted, available, secure, or error-free;
• every email will be delivered;
• files will always be processed successfully;
• the service will meet your specific needs;
• the service is suitable for any particular purpose.

Spam filters, mail server restrictions, incorrect addresses, third-party provider issues, recipient-side problems, and internet infrastructure issues are outside our control.

12. Limitation of Liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential, or punitive damages arising from your use of, or inability to use, CifraGuard.

This includes, but is not limited to:

• loss of data;
• failed, delayed, blocked, or misdirected email delivery;
• unauthorised access caused by incorrect recipient details, compromised email accounts, or user error;
• loss of business, profit, opportunity, reputation, or goodwill;
• service interruption, suspension, or discontinuation.

Because CifraGuard is provided free of charge, if you are dissatisfied with the service, you may stop using it at any time.

Nothing in these terms limits or excludes liability where such limitation or exclusion is not permitted by law, including liability for intent, gross negligence, death or personal injury, or mandatory consumer rights.

13. Third-Party Services

CifraGuard may rely on third-party providers for hosting, email delivery, analytics, security, monitoring, or other technical functions.

We are not responsible for failures, interruptions, restrictions, or actions of third-party providers that are outside our reasonable control.

Use of third-party services may also be subject to their own terms and privacy policies.

14. Intellectual Property

CifraGuard, the website, design, text, code, branding, and related materials belong to their respective owners.

You may not copy, reproduce, resell, or exploit CifraGuard or its branding without permission, except where allowed by law or by an applicable open-source licence if parts of the project are published under such a licence.

You retain any rights you have in the files you send through the service.

15. Changes to These Terms

We may update these Terms of Service from time to time.

The date at the top of this page shows when the terms were last updated.

If we make significant changes, we may provide additional notice where appropriate.

Continued use of CifraGuard after changes take effect means you accept the updated terms.

16. Governing Law

These terms are governed by the laws of the Netherlands.

If you are a consumer, this does not affect any mandatory consumer protections that may apply in your country of residence.

17. Contact

Questions about these terms, privacy, or abuse reports can be sent via the contact page.

The service is operated from the Netherlands. Contact details are available on the contact page. Additional provider information may be made available where legally required or upon legitimate request.