Protecting People on Meta's Apps From Fraudsters: Product Sense Design
Company: Meta
Role: Product Manager
Category: Product Design & Strategy
Difficulty: medium
Interview Round: Other
You are a product manager at Meta. Design a product that protects the people who use Meta's apps (Facebook, including Marketplace, Instagram, Messenger and WhatsApp) from scams: attempts to trick them into handing over money, goods or personal information.
```hint Follow one scam from start to finish
Scams differ in where the first contact happens, how trust is built and where the money finally moves. Pick one scam journey and look for the moment where stepping in costs the potential victim the least and is hardest for the scammer to avoid.
```
### Clarifying Questions
- Which scams are in scope: fake Marketplace listings and buyers, accounts impersonating a friend or relative, romance or investment schemes, scam ads, or all of them?
- Must the product work in WhatsApp and Messenger chats that are end-to-end encrypted, where Meta's servers cannot read the messages?
- Is the goal to warn and protect potential victims inside the product, to find and remove scammers faster behind the scenes, or both?
- Which country should launch first, since common scam types and payment methods differ by market?
### What a Strong Answer Covers
- A sharp scope: which scam type, which app and which group of potential victims, with a reason tied to harm and to Meta's leverage
- The scam journey from first contact to money loss, and the points where the product can step in
- Solutions that respect end-to-end encryption and user privacy, prioritized with an explicit rationale
- Success metrics centered on harm prevented rather than engagement, with false-positive and friction guardrails
- How scammers will adapt once the product launches, and how it keeps working after they do
### Follow-up Questions
- Most people who see your warning dismiss it. What do you change, and how do you tell whether the warning is badly targeted or badly designed?
- A legitimate small business complains that its first messages to new customers now carry a warning. How do you handle it?
- How would you measure money lost to scams when most of it moves through banks and payment apps outside Meta?
Overview: A Meta product sense interview question asking you to design a product that protects people on Facebook, Instagram, Messenger and WhatsApp from scams. It tests scoping to one scam journey and victim group, interventions that work with encrypted messaging, prioritization, and harm-based metrics with false-positive guardrails.