What is an NDA? (Protect Your Secrets Simply)

“Can you keep a secret?” usually isn’t enough in business. You need a Non-Disclosure Agreement (NDA). It is the legal equivalent of the first rule of Fight Club: You do not talk about what you see here.

BMT Legal Research Team BMT Legal Research Team · 📅 Jan 2026 · ⏱️ 3 min read · LEGAL › CONTRACTS
Purpose
Silence
Protect IdeasDef
Types
1-Way/2-Way
Know the DiffCheck
Duration
2-5 Yrs
Standard TermLimit

One-Way vs. Mutual (Know the Difference)

Not all NDAs are the same. Are you the only one sharing secrets, or are you swapping secrets?

Type Who keeps secrets? When to use?
One-Way (Unilateral) Only Receiver Hiring Employees
Mutual (Two-Way) Both Parties Partnerships
Example
One-Way: You hire a freelancer to fix your code. They see your code (Secret), but you see nothing of theirs. They sign a One-Way NDA.
Mutual: Two companies discuss a merger. Both show their financial books. Both sign a Mutual NDA.
What is Protected?
Customer Lists Yes
Business assets.
Public Info No
If it’s on Google, it’s free.
Illegal Acts No
Can’t hide crimes.

“I will sue you” is harder than it looks

An NDA gives you the right to sue, but it doesn’t magically stop leaks.

1. Injunction (Stop It!)

If you catch them leaking, you run to court for an “Injunction.” This is a court order forcing them to shut up immediately.

2. Damages (Pay Me!)

You have to prove that the leak cost you money.
(Hard Part: “Because they told my competitor, I lost $50,000.” You have to prove that exact number).

3. Legal Fees

Crucial Clause: Always include a line saying: “The loser pays the winner’s legal fees.” Without this, suing them might cost more than the secret was worth.

Pro Tip: The “Residuals” Clause Trap

If you are a freelancer or developer, watch out for this sneaky line.

“Unaided Memory”

Some big tech companies add a “Residuals Clause.” It says: “Anything my employees remember in their ‘unaided memory’ is not confidential.”
Translation: If they look at your code, memorize the logic, and rewrite it later from memory, they owe you nothing.
Advice: Strike this clause out before signing.

Frequently Asked Questions

Do I need a lawyer to write one?
Not usually. For standard business deals, a template (like from RocketLawyer or LegalZoom) is fine. For multi-million dollar M&A deals? Yes, get a lawyer.
Does an NDA last forever?
Rarely. Most courts hate “perpetual” contracts. Standard term is 2 to 5 years. However, Trade Secrets (like the Coke recipe) can be protected forever as long as they remain secret.