Terms of use

Klarion is published by Klarion Technologies, Inc., a corporation incorporated in the State of Delaware, United States. Where these terms say “we” or “us”, that is who they mean. Questions about them go to [email protected].

Klarion Free is licensed to you at no charge for non-commercial use: personal research, study, coursework, competitions and contributing to projects you are not paid for. It requires no account and does not expire. It is a licence to use the software, not a transfer of ownership, and the rest of these terms apply to it too.

A paid Klarion licence is named-user: it belongs to a person, not to a machine. You may install it on as many machines as you personally use, up to the seat count on the licence, and move a seat when you change machines. Updates are included for the period stated at purchase; the version you have when that period ends keeps working indefinitely.

A seat binds to a machine when you activate it. Release it from your account page or from the application and it is free immediately for another. Reinstalling on the same machine costs nothing. If a machine is reimaged and its old seat is stranded, an online seat unseen for 45 days is released automatically the next time you activate; an offline seat is not, because an air-gapped machine cannot check in and its silence means nothing, so you release those yourself.

A machine with no network gets a signed licence file bound to it. Be clear about what that means in both directions: it keeps working with no connection for as long as the file is valid, and we cannot revoke it on that machine before then. If a file is revoked for cause the seat is freed on our side, and the remedy against the holder is contractual rather than technical.

We are aware of our software being crackable and there is nothing we can do to stop it. Anyone determined enough will get past the licence check, and every measure that would slow them down (obfuscation, anti-debugging, integrity checks, a phone-home that refuses to start) makes Klarion worse for the people who paid. We have chosen not to do those things.

Cracking Klarion for your own personal use is acceptable, and we will never seek any legal punishment for it. If you are a student, a hobbyist or someone who simply cannot justify the cost right now, we would rather you used the tool than did not. The free edition exists for exactly that, and it is not crippled.

Distributing a cracked copy is different. Sharing, uploading, mirroring, torrenting, reselling or publishing a modified build of Klarion, a patched executable, a key generator or a licence file that is not yours, will be met with a cease and desist, a DMCA takedown and in some cases further legal action. The line is not “did you bypass the check”. The line is did you hand it to other people.

Two things follow from this that are worth saying out loud. A cracked build is a build somebody else modified, and you have no way to know what else they changed in a tool you point at malware. And a licence key found in public circulation is revoked, not to punish whoever downloaded it, but because it identifies whoever leaked it.

Do not resell licences, share keys outside your organisation or represent Klarion as your own product. Do not remove or alter the attribution and third-party licence notices that ship with it: some of those are obligations we owe to other people.

Government departments and agencies buy at half price under the terms on the government pricing page, which are part of these terms for anyone who buys that way.

Klarion is a general-purpose analysis tool. You are responsible for having the right to examine the binaries you open, under the law that applies to you. Reverse engineering is lawful in many jurisdictions for interoperability, security research and education and unlawful in some circumstances in most of them. We do not and cannot advise you on which side of that line a particular file sits.

If Klarion does not do what you needed within 30 days of purchase, write to [email protected] and we will refund it. You do not have to explain yourself.

The software is provided as is. Analysis output is a best effort: disassembly and decompilation are undecidable in the general case. A recovered function boundary can be wrong, and pseudocode is a reading of the machine code rather than the original source. Verify anything you rely on. Where Klarion does not know something, it says so rather than filling the gap with a confident guess.

To the extent the law allows, our total liability under these terms is limited to what you paid us in the twelve months before the claim, and we are not liable for indirect or consequential loss. Nothing here limits liability that cannot lawfully be limited.

We may change these terms for future purchases. The terms you agreed to when you bought a licence continue to govern that licence for its term.