Terms and Conditions

Terms and Conditions

Effective date: July 5, 2026

These Terms and Conditions govern your access to and use of shahidaac.com, including its articles, educational resources, technical materials, digital products, affiliate links, professional services, Gumroad products, Ko-fi services, and voluntary support options.

By accessing this website, purchasing a product, requesting a service, submitting information, or using a linked platform, you agree to these Terms and Conditions. If you do not agree, please stop using the website.

1. Website Owner

This website is owned and operated by:

2. Website Purpose

shahidaac.com provides educational, professional, and technical information relating to areas such as:

  • Industrial Control System and Operational Technology security
  • Industrial cybersecurity and network security
  • Industrial automation, PLC, SCADA, and control systems
  • Electrical engineering, utilities, and maintenance
  • Cyber physical systems and critical infrastructure
  • Industrial Engineering and operational improvement
  • Fire safety, electrical safety, and workplace safety
  • Technical education, professional development, and research
  • Templates, guides, checklists, reports, and digital resources

The website may also present professional experience, invite employment or research enquiries, promote third party products, sell digital products, provide freelance services, and accept voluntary support.

3. Eligibility and Acceptance

By using this website, you confirm that you are legally able to accept these Terms and Conditions in your jurisdiction.

If you use the website on behalf of an organization, you confirm that you have authority to act for that organization.

4. Educational Information

Website content is provided for general educational and informational purposes. It is not a substitute for a site specific engineering assessment, cybersecurity assessment, legal opinion, safety inspection, regulatory review, or professional consultation.

Technical information may not be suitable for every system, country, industry, facility, network, or operating environment.

You should obtain advice from qualified and authorized professionals before applying information to:

  • Live electrical equipment
  • Industrial Control Systems
  • Operational Technology networks
  • Production machinery
  • Fire detection or protection systems
  • Critical infrastructure
  • Safety related systems
  • Regulated facilities

5. Cybersecurity and Authorized Use

Cybersecurity information, examples, tools, templates, and demonstrations must be used only for lawful, ethical, and authorized purposes.

You must obtain clear written permission before performing security testing, scanning, configuration changes, vulnerability assessments, penetration testing, or similar activities on a system that you do not own.

You may not use this website or its resources to:

  • Access a system without permission
  • Disrupt a network, service, machine, or facility
  • Bypass security controls
  • Deploy malware or harmful code
  • Collect information unlawfully
  • Interfere with industrial, energy, water, transport, automotive, marine, aviation, medical, or public service systems

6. No Professional Relationship

Visiting this website, sending an email, completing a contact form, purchasing a digital product, or making a Ko-fi contribution does not automatically create a professional relationship.

An engineer and client, consultant and client, instructor and student, employer and employee, or research relationship begins only after the relevant parties agree in writing to the scope, responsibilities, fees, confidentiality requirements, and other applicable terms.

7. Accuracy of Information

Reasonable efforts are made to provide accurate and useful information. However, standards, laws, software, technical guidance, products, prices, platform policies, security threats, and industry practices can change.

We do not guarantee that every page, download, recommendation, or external link will always be complete, current, accurate, or suitable for your circumstances.

We may correct, update, replace, restrict, or remove content without prior notice.

8. Affiliate Links

Some pages may contain affiliate links. If you follow an affiliate link and complete a qualifying purchase or action, we may receive a commission or another benefit.

This normally does not increase the price you pay unless the merchant clearly states otherwise.

Affiliate relationships will be disclosed clearly near the relevant recommendation, review, link, or promotional content where appropriate.

An affiliate reference is not a guarantee that a product or service will meet your requirements. You are responsible for reviewing the seller’s price, specifications, terms, warranty, privacy policy, delivery conditions, and refund policy before purchasing.

9. Gumroad Products and Services

Digital products or services may be offered through Gumroad. Products may include guides, templates, checklists, documents, reports, educational materials, digital tools, code, or other downloadable resources.

A Gumroad transaction may also be governed by Gumroad’s terms, privacy practices, payment procedures, product delivery process, and dispute process.

The information displayed on the relevant Gumroad product page forms part of the purchase terms. This may include:

  • Product description
  • Included files
  • Price and currency
  • Usage licence
  • Delivery method
  • Update terms
  • Refund conditions

10. Ko-fi Support, Products, Memberships, and Commissions

Ko-fi may be used to accept voluntary support, sell products, provide membership benefits, or receive commission and service requests.

A voluntary contribution does not create an obligation to provide a service, consultation, recommendation, employment outcome, sponsorship, or other benefit unless a specific offer clearly states otherwise.

Ko-fi shop orders, memberships, commissions, and services are subject to the description and terms displayed on the relevant Ko-fi page.

Payments may be processed through an external payment provider. The payment provider may apply its own terms, privacy policy, account rules, fees, and dispute procedures.

11. Prices, Payments, and Taxes

Prices may be displayed in United States dollars, Bangladeshi taka, or another currency supported by the relevant platform.

You are responsible for any applicable taxes, duties, bank charges, payment processing charges, or currency conversion costs unless the product page states otherwise.

Complete card details are processed by the relevant payment provider and are not stored directly on shahidaac.com.

12. Digital Product Delivery

Digital products are normally delivered electronically through the platform used for the purchase.

You are responsible for:

  • Providing an accurate email address
  • Maintaining access to your purchasing account
  • Checking your spam or junk folder
  • Using a compatible device and suitable software
  • Downloading and securely storing purchased files

For delivery problems, contact [email protected] with sufficient information to identify the transaction.

13. Refunds and Cancellations

Refund eligibility depends on the product, service, membership, commission, purchase platform, applicable law, and the refund policy displayed before purchase.

Digital Products

Because digital products may be delivered or accessed immediately, a refund may not be available after access or download unless the product is defective, materially different from its description, required by law, or covered by a stated refund policy.

Duplicate or Incorrect Payments

Please contact us promptly if you believe that a payment was duplicated, unauthorized, or processed incorrectly.

Voluntary Support

Voluntary Ko-fi support is normally not refundable unless the payment was made in error, was unauthorized, or a refund is required by applicable law.

Memberships

You may cancel a recurring membership through the platform or payment provider. Cancellation normally prevents future renewal and does not automatically refund previous payments.

Custom Services and Commissions

Refunds for custom services or commissions depend on the agreed scope, completed work, reserved time, expenses, and written project terms.

14. Digital Product Licence

Unless the relevant product page states otherwise, purchasing a digital product gives you a limited, nonexclusive, nontransferable licence for personal, educational, or internal professional use.

You may not:

  • Resell or redistribute the product
  • Share the product publicly or privately with unauthorized users
  • Upload it to a file sharing service, public repository, course platform, or membership site
  • Claim the product as your own work
  • Remove copyright, attribution, licence, or ownership notices
  • Use it to create a directly competing resale product
  • Use it for unlawful, harmful, or deceptive activity

Commercial, team, classroom, client, resale, extended, or white label use requires a licence that clearly permits that use or separate written permission.

15. Freelance, Consulting, and Project Services

The website may be used to receive enquiries concerning technical writing, research, training, industrial engineering, electrical engineering, automation, cybersecurity, website development, digital products, and related professional services.

Submitting an enquiry does not guarantee acceptance, availability, sponsorship, employment, a quotation, or project delivery.

Before work begins, the parties may agree in writing on:

  • Scope of work
  • Deliverables
  • Timeline
  • Fees and payment stages
  • Revision limits
  • Client responsibilities
  • Confidentiality requirements
  • Ownership of completed work
  • Cancellation and refund terms
  • Applicable laws, standards, and authorization requirements

16. Intellectual Property

Unless stated otherwise, original articles, graphics, diagrams, downloads, templates, documents, branding, and other original website materials are owned by Abdullah Al Shahid Chowdhury or used with permission.

You may:

  • Read publicly available pages
  • Share links to public pages
  • Quote a reasonable short extract with accurate attribution and a link to the original page

You may not copy, republish, sell, translate, scrape, distribute, or commercially exploit a substantial part of the website or its products without written permission, except where applicable law allows it.

17. User Submissions

If you submit feedback, comments, testimonials, suggestions, files, or other materials, you confirm that:

  • You have the right to submit the material
  • The material does not violate another person’s rights
  • The material is not unlawful, defamatory, deceptive, or harmful
  • The material does not contain confidential or security sensitive information that you are not authorized to disclose

We may review, reject, moderate, or remove submissions when reasonably necessary.

18. Testimonials and Results

Testimonials, examples, case studies, project outcomes, learning results, income references, or performance figures describe specific experiences.

They do not guarantee that another person will receive the same result. Outcomes depend on experience, implementation, market conditions, available resources, technical conditions, and decisions made by third parties.

19. Third Party Websites and Services

This website may link to Gumroad, Ko-fi, PayPal, Stripe, Google, LinkedIn, GitHub, YouTube, educational providers, affiliate merchants, research platforms, and other external services.

We do not control third party websites and are not responsible for their content, availability, pricing, payment processing, security, privacy practices, product quality, refund decisions, or account restrictions.

Your use of an external platform is governed by that platform’s own terms and policies.

20. Website Availability and Security

We do not guarantee that the website will always be available, uninterrupted, secure, or free from technical errors.

Access may be restricted or suspended for maintenance, security, legal, technical, or operational reasons.

You are responsible for using suitable security software, maintaining backups, protecting your accounts, and checking downloaded files before use.

21. Prohibited Conduct

You may not:

  • Use the website for unlawful or fraudulent purposes
  • Attempt to gain unauthorized access to the website or connected systems
  • Introduce malicious code, spam, or harmful material
  • Impersonate a person or organization
  • Misrepresent a qualification, affiliation, endorsement, or professional relationship
  • Interfere with the website or other users
  • Redistribute protected products without permission
  • Use technical information to support unauthorized or harmful activity

22. Disclaimer of Warranties

To the fullest extent permitted by law, the website, its content, products, downloads, links, and services are provided on an “as is” and “as available” basis.

We do not guarantee accuracy, completeness, compatibility, suitability for a particular purpose, uninterrupted availability, security results, business outcomes, employment, academic admission, sponsorship, search visibility, sales, or project success.

23. Limitation of Liability

To the fullest extent permitted by applicable law, Abdullah Al Shahid Chowdhury and shahidaac.com will not be responsible for indirect, incidental, special, consequential, or punitive loss arising from your use of, inability to use, or reliance on the website, its content, products, downloads, or linked services.

This may include loss of data, revenue, profit, opportunity, reputation, system availability, production, equipment, or business continuity.

Nothing in these Terms and Conditions excludes liability that cannot legally be excluded.

24. Privacy

Your use of this website is also subject to the Privacy Policy.

25. Suspension or Termination

We may restrict or terminate access to products, services, memberships, communities, or website features when reasonably necessary because of:

  • A breach of these Terms and Conditions
  • Fraud, abuse, harassment, or misuse
  • Unauthorized distribution
  • A security risk
  • Nonpayment
  • A legal requirement
  • A restriction imposed by a third party platform

26. Governing Law

These Terms and Conditions are governed by the applicable laws of Bangladesh.

This does not remove any mandatory consumer right that applies under the law of your country of residence.

Where a dispute cannot be resolved informally, it will be submitted to a competent court in Bangladesh unless applicable law requires another forum.

27. Changes to These Terms

These Terms and Conditions may be updated to reflect changes in website functions, products, services, platforms, laws, or business practices.

The revised version will be published on this page with an updated effective date.

Your continued use of the website after a revision means that you accept the updated terms, except where additional consent is legally required.

28. Contact

For questions about these Terms and Conditions, digital products, affiliate disclosures, payments, refunds, or professional services, contact:

These Terms and Conditions provide general website terms and do not constitute legal advice.