You found something bad about a competitor. Now what?
Usually: nothing loud. Verifiable facts you can state calmly are useful. Gossip is a liability. And attacking a rival in public makes you look like the problem, not them.
You found it. A wall of furious reviews, a pattern of complaints, a public misstep, something.
The temptation is to use it. Loudly.
Almost always, do not.
The line that matters
Before anything else, sort what you found into one of two boxes.
Verifiable public fact. Their published pricing changed. Their reviews say something, and anyone can go read them. Their status page shows the outages. It is a fact, it is public, and a prospect could check it in thirty seconds.
Rumour. Something you heard. Something a former employee implied. Something that is probably true.
Only the first box is safe to use, and even then, carefully. The second box is a liability, and it does not matter that you believe it. If you cannot point at the source, you are gossiping, and gossiping about competitors is a personality, not a strategy.
Why attacking publicly backfires
Companies that go on the offensive against a rival consistently damage themselves, and the mechanism is not subtle.
Buyers read it as insecurity. The subtext of a public attack is always the same: we are worried about them. That is not the impression you were trying to create.
It also elevates them. You just told your entire audience the name of a company they may not have known about, and framed the two of you as peers. If they were smaller than you, congratulations, you promoted them for free.
And it changes the topic. Instead of thinking about whether they want what you sell, the buyer is now thinking about a fight between two vendors, which is a topic they find tedious and slightly embarrassing.
The quiet version, which works
Do not characterise it. Point at it.
If a prospect is comparing you against a competitor with a long public record of complaints about setup time, you do not need to say they are bad at onboarding. You say: worth reading their reviews on the setup experience, and here is a customer of ours who switched, and they will tell you how it went.
The prospect goes and reads. They reach the conclusion themselves. It is far more persuasive arriving that way than it would ever be coming from you, because it did not come from you.
You are handing them a source, not an accusation. Those feel very different from the other side of the table.
The exception
If what you found is genuinely serious, an actual security vulnerability, an actual legal problem, actual harm to customers, that is not a competitive opportunity and treating it as one is a bad look and possibly worse than that.
That is a different situation with its own obligations, and the correct move is almost never a marketing campaign.
Most of the time, though, what you found is just a company being mediocre at something, which is not scandal, it is Tuesday. Use it quietly or not at all.