Terms of Service

1. Introduction and Acceptance

These Terms of Service ("Terms") constitute a legally binding agreement between you ("Customer", "you", or "your") and A13E Limited, a company registered in England and Wales ("A13E Limited", "we", "us", or "our"), governing your access to and use of CloudSigma, our automated threat intelligence to Sigma detection rule conversion platform (the "Service").

By creating an account, accessing, or using CloudSigma, you acknowledge that you have read, understood, and agree to be bound by these Terms. If you are using CloudSigma on behalf of an organisation, you represent and warrant that you have the authority to bind that organisation to these Terms, and "you" and "your" shall refer to that organisation.

If you do not agree to these Terms, you must not access or use CloudSigma.

2. Definitions

In these Terms, the following definitions apply:

• "Service" means the CloudSigma platform, including the web application, API, and all associated features and functionality
• "Customer Data" means any data, content, or information submitted to CloudSigma by or on behalf of the Customer, including threat intelligence inputs (URLs, CVE identifiers, raw text), configuration preferences, and account information
• "Generated Output" means Sigma detection rules, SIEM-specific queries, TTP extractions, IOC analyses, and any other content produced by CloudSigma from Customer Data
• "Subscription" means the plan and tier selected by the Customer for access to CloudSigma, as described in Section 5
• "MITRE ATT&CK" means the MITRE ATT&CK framework for classifying adversary tactics, techniques, and procedures
• "Sigma" means the open-source Sigma detection rule format maintained by the SigmaHQ project

3. Service Description

CloudSigma is an automated threat intelligence to Sigma detection rule conversion platform. The Service provides the following capabilities:

• Threat intelligence ingestion: accepting input from URLs (threat blog posts, security advisories), CVE identifiers, and free-text threat intelligence reports
• TTP extraction: AI-powered extraction of MITRE ATT&CK tactics, techniques, and procedures from ingested threat intelligence, including cloud-specific indicators
• Sigma rule generation: automated creation of Sigma detection rules tailored to specific cloud providers (AWS, Google Cloud, Azure) based on extracted TTPs
• Rule validation: automated validation of generated rules via the pySigma framework to ensure syntactic and semantic correctness
• SIEM conversion: conversion of validated Sigma rules to SIEM-specific query formats, including Splunk SPL, Microsoft Sentinel KQL, and Elastic/Lucene
• IOC rule generation: standalone indicator-of-compromise detection rules from validated network indicators

3.1 AI-Powered Processing

CloudSigma uses artificial intelligence, including large language models, to power its analysis and rule generation capabilities. You acknowledge that Generated Output is produced with AI assistance, should be reviewed by qualified professionals before deployment, and is not a substitute for professional security assessment.

3.2 Service Availability

We will use commercially reasonable efforts to make CloudSigma available 24/7, subject to planned maintenance and circumstances beyond our reasonable control. We do not guarantee uninterrupted or error-free operation of the Service.

4. Account Registration and Security

4.1 Account Creation

To access CloudSigma, you must create an account by providing accurate and complete registration information. You agree to keep your account information current and accurate at all times.

4.2 Account Security

You are responsible for maintaining the confidentiality of your account credentials and for all activities that occur under your account. You must:

• Use a strong, unique password for your CloudSigma account
• Notify us immediately at support@a13e.com if you suspect unauthorised access to your account
• Not share your account credentials with any third party

4.3 Account Eligibility

You must be at least 18 years of age to create an account and use CloudSigma. By creating an account, you represent and warrant that you meet this age requirement.

5. Subscription and Fees

5.1 Subscription Tiers

CloudSigma is available under the following subscription tiers:

• Free: £0/month — up to 20 rules per month. Subject to feature limitations as described on the Pricing page.
• Pro: £29/month — unlimited rules per month. Includes all features and priority support.
• Team: £99/month — up to 5 seats with unlimited rules. Includes team management and collaboration features.
• Enterprise: custom pricing — tailored plans with dedicated support, custom integrations, and SLA guarantees. Contact sales@a13e.com for details.

5.2 Billing and Payment

• Paid subscriptions are billed monthly in advance on the anniversary of your subscription start date
• All fees are quoted in Pounds Sterling and are exclusive of applicable taxes
• Payment is processed via our third-party payment provider. You authorise us to charge your designated payment method for all applicable fees

5.3 Tier Changes

You may upgrade or downgrade your subscription tier at any time through your account settings. Upgrades take effect immediately with prorated billing. Downgrades take effect at the start of the next billing cycle.

5.4 Refunds

Fees are non-refundable except as required by applicable law or as expressly stated in these Terms. If you cancel a paid subscription, you will retain access to the paid tier until the end of the current billing period.

5.5 Price Changes

We reserve the right to change subscription fees upon 30 days' prior notice. Fee changes will take effect at the start of the next billing cycle after the notice period. If you do not agree to the new fees, you may cancel your subscription before the new fees take effect.

6. Acceptable Use

You agree to use CloudSigma only for lawful purposes and in accordance with these Terms. You shall not:

• Use the Service to develop, distribute, or deploy malware, ransomware, or other malicious software
• Attempt to circumvent rate limits, usage quotas, or other technical restrictions
• Submit inputs designed to manipulate, exploit, or inject prompts into the AI processing pipeline
• Reverse-engineer, decompile, or disassemble any part of the Service
• Use the Service in violation of any applicable law, regulation, or third-party rights
• Access or attempt to access another user's account or data without authorisation
• Use automated tools (bots, scrapers, crawlers) to access the Service except through our published API in accordance with its documentation
• Resell, sublicence, or commercially redistribute Generated Output without our prior written consent (unless your subscription tier expressly permits it)
• Submit any content that infringes the intellectual property rights of any third party

We reserve the right to suspend or terminate your access to CloudSigma if we reasonably believe you are violating these acceptable use requirements.

7. Customer Data

7.1 Ownership

You retain all rights, title, and interest in your Customer Data. By submitting Customer Data to CloudSigma, you grant us a limited, non-exclusive, worldwide licence to use, process, and store your Customer Data solely for the purpose of providing the Service.

7.2 Responsibility

You are solely responsible for the accuracy, legality, and appropriateness of Customer Data you submit. You represent and warrant that you have all necessary rights and permissions to submit Customer Data and that such submission does not violate any third-party rights.

7.3 Data Processing

Customer Data submitted for processing (threat intelligence inputs) is sent to third-party AI services for analysis. We process Customer Data in accordance with our Privacy Policy. We do not use Customer Data to train AI models. Customer Data is cached temporarily for performance optimisation and is not retained long-term after processing.

7.4 Sensitive Data

You should not submit personal data, classified information, or data subject to specific regulatory requirements (such as HIPAA-protected health information) as threat intelligence input. CloudSigma is designed to process publicly available or organisation-internal threat intelligence, not regulated personal data.

8. Intellectual Property

8.1 Service IP

CloudSigma, including its software, algorithms, gold corpus of reference rules, user interface, documentation, and all associated intellectual property rights, is and remains the exclusive property of A13E Limited. These Terms do not grant you any rights in or to the Service except for the limited right to use it in accordance with these Terms.

8.2 Generated Output

Subject to your compliance with these Terms and your active subscription, you are granted a non-exclusive, worldwide licence to use, modify, and deploy Generated Output (Sigma rules and SIEM queries) within your organisation for your internal security operations. Generated Output is based on the open-source Sigma format and you may use it in accordance with your subscription tier.

8.3 Feedback

If you provide us with feedback, suggestions, or ideas regarding CloudSigma, you grant us an unrestricted, irrevocable, worldwide, royalty-free licence to use, modify, and incorporate such feedback into the Service without any obligation to you.

8.4 Open-Source Components

CloudSigma incorporates open-source software components, including pySigma and SigmaHQ rule specifications. Use of these components is subject to their respective open-source licences, which are not modified by these Terms.

9. Confidentiality

Each party agrees to maintain the confidentiality of the other party's Confidential Information. "Confidential Information" means any non-public information disclosed by one party to the other in connection with CloudSigma, including but not limited to:

• Customer Data and Generated Output
• Business plans, pricing, and product roadmaps
• Technical specifications and security architecture
• Any information marked as "confidential" or that a reasonable person would understand to be confidential

Confidential Information does not include information that is: (a) publicly available through no fault of the receiving party; (b) independently developed by the receiving party; (c) rightfully received from a third party without restriction; or (d) required to be disclosed by law or legal process.

10. Warranties and Disclaimers

10.1 Our Warranties

We warrant that: (a) we have the right to provide CloudSigma; (b) the Service will perform substantially in accordance with its documentation; and (c) we will provide the Service with reasonable care and skill.

10.2 AI/LLM Disclaimer

10.3 General Disclaimer

EXCEPT AS EXPRESSLY SET FORTH IN SECTION 10.1, CLOUDSIGMA IS PROVIDED "AS IS" AND "AS AVAILABLE". TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND ANY WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR COMPLETELY SECURE.

11. Limitation of Liability

11.1 Exclusion of Indirect Damages

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING LOSS OF PROFITS, REVENUE, DATA, BUSINESS OPPORTUNITIES, OR GOODWILL, ARISING OUT OF OR RELATED TO THESE TERMS OR THE USE OF CLOUDSIGMA, REGARDLESS OF THE THEORY OF LIABILITY.

11.2 Liability Cap

OUR TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATED TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE GREATER OF: (A) THE TOTAL FEES PAID BY YOU TO US IN THE 12 MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE LIABILITY; OR (B) ONE HUNDRED POUNDS STERLING (£100).

11.3 Exceptions

Nothing in these Terms excludes or limits liability for: (a) death or personal injury caused by negligence; (b) fraud or fraudulent misrepresentation; (c) any liability that cannot be excluded or limited by applicable law; or (d) your breach of Section 6 (Acceptable Use).

12. Indemnification

You agree to indemnify, defend, and hold harmless A13E Limited, its officers, directors, employees, agents, and affiliates from and against any claims, liabilities, damages, losses, and expenses (including reasonable legal fees) arising out of or related to:

• Your use of CloudSigma in violation of these Terms
• Your breach of any representation or warranty in these Terms
• Your violation of any applicable law or third-party rights
• Customer Data that infringes the intellectual property rights of any third party
• The deployment of Generated Output in your environments, including any security incidents or damages resulting therefrom

13. Term and Termination

13.1 Term

These Terms commence when you create a CloudSigma account and continue until terminated in accordance with this section.

13.2 Termination by You

You may terminate your account at any time through your account settings or by contacting us at support@a13e.com. Termination will take effect at the end of the current billing period for paid subscriptions.

13.3 Termination by Us

We may suspend or terminate your account: (a) immediately if you breach Sections 6 (Acceptable Use) or 9 (Confidentiality); (b) upon 30 days' written notice for any other material breach that remains uncured during the notice period; or (c) immediately if required by law or to protect the safety and security of the Service or other users.

13.4 Effects of Termination

Upon termination: (a) your right to access CloudSigma ceases immediately; (b) you may request export of your Generated Output within 30 days of termination; (c) we will delete your Customer Data within 30 days, except as required by law or as described in our Privacy Policy; (d) Sections 7, 8, 9, 10, 11, 12, and 14 survive termination.

14. General Provisions

14.1 Governing Law

These Terms shall be governed by and construed in accordance with the laws of England and Wales, without regard to its conflict of law provisions.

14.2 Dispute Resolution

Any dispute arising out of or in connection with these Terms shall be subject to the exclusive jurisdiction of the courts of England and Wales. Before initiating legal proceedings, the parties agree to attempt to resolve disputes through good-faith negotiation for a period of not less than 30 days.

14.3 Amendments

We may modify these Terms at any time by posting the updated Terms on CloudSigma and updating the "Effective Date". Material changes will be communicated via email or through the Service. Your continued use of CloudSigma after the effective date of any changes constitutes acceptance of the updated Terms.

14.4 Assignment

You may not assign or transfer your rights or obligations under these Terms without our prior written consent. We may assign these Terms in connection with a merger, acquisition, or sale of all or substantially all of our assets.

14.5 Severability

If any provision of these Terms is held to be invalid, illegal, or unenforceable, the remaining provisions shall continue in full force and effect.

14.6 Entire Agreement

These Terms, together with the Privacy Policy and any applicable order forms or subscription agreements, constitute the entire agreement between you and A13E Limited regarding CloudSigma and supersede all prior or contemporaneous agreements, representations, and understandings.

14.7 Waiver

No failure or delay by either party in exercising any right under these Terms shall constitute a waiver of that right. A waiver of any breach shall not constitute a waiver of any subsequent breach.

14.8 Force Majeure

Neither party shall be liable for any failure or delay in performing its obligations under these Terms caused by events beyond its reasonable control, including but not limited to natural disasters, acts of government, internet disruptions, or third-party service failures.

15. Contact Information

If you have any questions about these Terms of Service, please contact us: