Explain Phishing Attacks, Then Design Anti-Phishing Education for Crypto Exchange Users
Company: Coinbase
Role: Product Manager
Category: Product Design & Strategy
Difficulty: medium
Interview Round: Other
You are a product manager at Coinbase, a cryptocurrency exchange. The question has two parts: first explain what phishing is, then lay out how the company should teach its customers to recognize and avoid it.
### Clarifying Questions
- Is the main goal fewer customer losses, fewer account takeovers reaching support, or customer trust and retention?
- Which customers are in scope: people signing up, existing verified customers, or both?
- Should the education cover only the exchange account, or also self-custody wallets and the company's social and community channels, where impostors often appear?
- Are there limits on budget or team size, or on how much friction we can add to sign-in and withdrawals?
### Part 1 — What phishing is
Explain what phishing is and how a typical attack unfolds, using examples that apply to people who hold crypto on an exchange.
```hint Think like the attacker
Lay the attack out as a sequence of steps from the attacker's side. What must the victim believe, and what must the victim hand over, for the attack to pay off?
```
#### What This Part Should Cover
- A precise definition that separates phishing from other attacks, such as malware or password guessing
- The stages of an attack and the channels it arrives through
- What makes crypto customers attractive targets and their losses hard to recover
### Part 2 — Teaching customers to resist it
Design how the company should educate its customers about phishing: whom to focus on, what they need to learn, where and when the education reaches them, and how you would know it reduces harm.
```hint Picture the moment of the mistake
Think about what a customer is doing at the moment they are fooled. Would a lesson they saw weeks earlier come to mind then?
```
#### What This Part Should Cover
- A segmentation of customers by risk and experience, with a justified focus
- The specific moments when customers are attacked, such as sign-in, withdrawals, wallet connections and contact with support
- Education formats and placement, weighed against friction for legitimate use
- Metrics that capture behavior change and losses, not content views
### What a Strong Answer Covers
- Security mechanics in Part 1 that are correct and that shape the plan in Part 2
- How education works alongside product safeguards
- A prioritized plan with explicit trade-offs between safety and friction
- Measurement of an outcome that is rare, delayed and under-reported
- Risks such as warning fatigue and attackers imitating the company's own messages
### Follow-up Questions
- Attackers start sending emails that copy the look of your education campaign. How do you respond?
- A customer loses funds after approving a malicious wallet signature on a site the company does not run. What is the company's responsibility, and what would you change?
- How would you show that the education program, rather than other changes, reduced phishing losses?
Overview: A two-part product question for Coinbase: explain what phishing is and how attacks unfold, then design how the exchange should teach customers to recognize and avoid it. It tests security fundamentals, risk-based segmentation, the timing and placement of education, and measuring behavior change and losses.