Brevo supply-chain attack affected 100,000+ websites through compromised Cloudflare API key
Source Reddit Cybersecurity
Discussion
Brevo disclosed a supply-chain attack involving a compromised Cloudflare API key that was used to inject malicious scripts into over 100,000 websites using Brevo services. The attack highlights risks from trusted third-party infrastructure and embedded scripts, emphasizing the security challenges posed by API keys and SaaS dependencies. This incident underscores the need to evaluate trust boundaries with vendors integrated into applications.
r/cybersecurity (opens in a new tab)u/sunychoudhary0 points0 comments
Brevo has disclosed a supply-chain attack where attackers used a compromised Cloudflare API key to inject malicious scripts into websites using Brevo services.
The interesting part is that the initial compromise was not just a direct customer breach, it became a downstream risk through trusted infrastructure and embedded scripts.
This is another reminder that API keys, third-party integrations, and SaaS dependencies are becoming a major security boundary.
A lot of organizations focus heavily on protecting their own environment, but the question is, how much trust should we place in vendors that are embedded into our applications?
Source: SecurityWeek