TERMS OF USE
NULL//SEC is operated by Subversive Symmetry. By using it you agree to these terms.
1. Educational, defensive purpose
NULL//SEC teaches cybersecurity for defence. All challenges are simulations using fabricated data. You agree to use what you learn lawfully and only against systems you own or are explicitly authorised in writing to test. Attempting to attack NULL//SEC itself, other users, or third-party systems is prohibited and ends your access.
2. Accounts
Keep your password secret and your account information accurate. One person per account. Callsigns must not impersonate others or be offensive; we may rename or suspend accounts that break these rules, and remove leaderboard entries that result from tampering with the client or automated play.
3. NULL//SEC PRO
- PRO is a one-time purchase (no subscription) sold through Gumroad as merchant of record. Gumroad’s terms apply to the payment.
- A license key unlocks PRO on one operator account. Sharing or reselling keys is not allowed.
- PRO access lasts for as long as NULL//SEC is operated. If we ever shut the service down, we will give at least 60 days’ notice.
- Refunds follow Gumroad’s process. A refunded or charged-back license is deactivated.
- EU consumers: by activating your key you request immediate access to digital content and acknowledge that the 14-day right of withdrawal ends once access begins (Directive 2011/83/EU, Art. 16(m)).
4. AI companion
NULL’s answers are generated by an AI model and can be wrong. Don’t rely on them for production security decisions without verification, and don’t enter confidential information.
5. Certificates
Certificates confirm completion of NULL//SEC courses. They are not accredited qualifications and are issued by this platform only.
6. Availability and liability
We work hard to keep NULL//SEC available but provide it “as is”. To the extent permitted by law, we are not liable for indirect damages or lost data; your in-browser progress is your responsibility to back up (account sync helps). Nothing here limits your statutory consumer rights.
7. Content
Course content, the NULL character and the NULL//SEC brand belong to Subversive Symmetry. You may share screenshots and your own certificates.
8. Law
Portuguese law applies, without prejudice to mandatory consumer protection rules of your country of residence. Questions: c-david@hotmail.com. See also the privacy policy.