Downtime Postmortem 14 March, 2025

On March 14, 2025, Linkly was subject to a denial-of-service attack that resulted in our app being offline for approximately 65 minutes, in two chunks.

The attack was targeted at one of our customers.

During the attack, over 1 billion requests were sent to our servers, in minutes.

This affected a number of our customers, whose links were offline or suffered from degraded performance during this time, and our web app was inaccessible.

We mitigated the attack by applying Cloudflare's WAF at our edge, which was able to block the attack while allowing legitimate traffic through.

Actions for Future Mitigation

We will be applying Cloudflare's edge throughout our network, which will help mitigate future denial-of-service attacks as they happen, without interruption of service.

You can monitor Linkly's uptime here: https://status.linklyhq.com.