WhatsApp · Strategy · Mid · 45 to 60 minutes

How should WhatsApp curb harmful forwards?

WhatsApp is a mobile messaging app that lets people send messages, photos, and calls over the internet using their phone number. Answer this product management case and get it graded line by line against a weighted rubric.

product strategy
trade off analysis
user trust
metrics
risk management

The situation

It is mid 2018, and you are a PM on WhatsApp's core messaging team. Senior leadership has asked you for a strategy recommendation after violent incidents in India were linked to false rumors spreading through WhatsApp. The issue is urgent, because governments, media, and civil society groups are questioning whether WhatsApp's product design helps dangerous content go viral. At the same time, WhatsApp's core promise is private, simple communication, and end to end encryption means the company cannot read message content to detect or moderate individual rumors. India is one of WhatsApp's largest and fastest growing markets, and the app is deeply embedded in family, neighborhood, and business communication. Any change that adds friction could reduce sharing, hurt growth, or make the product feel less simple than SMS. Leadership wants a product strategy that reduces harmful virality without breaking encryption, scanning private messages, or turning WhatsApp into a heavily moderated social feed. Assume you have authority to recommend changes to forwarding, metadata based controls, user education, and business or policy coordination.

What to produce

Write a 1 to 2 page product strategy memo.

Your answer must

Define the user and business problem clearly, including why this is a product problem and not only a policy or PR problem.
Segment at least two important use cases that could be affected differently, such as normal private sharing versus high velocity rumor spreading.
Recommend a strategy with 2 to 4 product moves, prioritized in order, and explain the trade offs for privacy, simplicity, growth, and safety.
Specify what signals and metrics you would use to judge success, including at least one leading indicator and one guardrail metric.
Describe the main risks of your approach, including how bad actors might adapt, and how you would mitigate them.

Constraints

Do not break end to end encryption or rely on reading message content.
Do not assume a large human moderation workforce reviewing private chats.
Do not add ads or change WhatsApp into a public social feed.
Your plan should be realistic to start rolling out within 6 months.

Format

Use short section headers and concise bullets. A strong memo will make explicit trade offs instead of listing every possible idea.

How WhatsApp actually played it

Traces WhatsApp from a bare messaging app that won on free messaging to a platform with business tools, through the Facebook acquisition, privacy fights and misinformation problems. Gives a timeline of feature choices and what each said about priorities.

Solve one costly pain simply and word of mouth does the growth
Scale brings policy and misinformation issues that become product work
Monetize a platform only after the core habit is secure

Built from WhatsApp Killed SMS. Here's How. by Sid Arora (JAPM).