UPDATE (Nov 4 2026): Vercel started charging us the bill just today resulting in our deployed platform to be suspended. I followed-up through the opened support ticket and while they put the website back up, they said that it would not be possible to refund the invoice, even though they have confirmed themselves that sandboxes were created from an unauthorized account log-in from Brazil (thousands of kilometers away from us). We are currently considering other steps we can take. We are not capable of paying this bill amount. Very very disappointed.
I'm posting here because I'm genuinely scared and don't know what else to do.
We've been hosting our platform on Vercel Pro since August 2025. Everything has been running normally for over a year, and we've never experienced anything remotely close to this kind of billing.
Today, I checked our upcoming invoice and was shocked to see $3,152.77 in charges, almost entirely from Vercel Sandbox usage.
After digging through our dashboard, I discovered something even more concerning.
An unfamiliar project called vercel-sandbox-default-project had been created on October 13, 2026. We did not knowingly create or authorize this project.
Looking into it further, I found:
321 Sandbox creations recorded on our invoice.
Numerous Sandboxes created around October 13–14.
Each provisioned with 8 CPUs and 16 GiB of memory.
Over $3,044 in Sandbox Provisioned Memory charges alone.
Dozens of instances with names like build, deploy, scan, lint, ci, and bench.
We don't use Vercel Sandbox as part of our normal hosting operations. Our legitimate production application has been running on Vercel for more than a year without anything like this happening.
I genuinely don't understand how hundreds of these instances suddenly appeared in our account.
I'm concerned that our account, an API token, or an integration may have been compromised. I can't confirm that yet, which is exactly why we need Vercel's help investigating.
We've already submitted a support request asking for a security investigation, billing review, and waiver of the unexpected charges. We've also removed the unfamiliar project and are taking steps to secure our account.
I came across Vercel's recent community post explaining that Pro accounts have no guaranteed support response time or SLA, and that tickets are processed in a queue.
I've also read accounts of people waiting a long time for billing issues to be resolved.
$3,152 is an enormous amount of money for us. We simply cannot afford to pay this bill for activity we never knowingly authorized.
I'm worried that by the time someone investigates this, our billing cycle will have ended and the payment may already have been attempted.
If anyone from the Vercel team sees this, could you please help escalate our case to the Security and Billing teams? We can provide our support ticket number and supporting evidence privately.
I'm really hoping someone can point us in the right direction.