Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Polyfill.js is a Javascript library that helps old browsers run new modern features which these old browsers do not support natively. The library is popular among developers for helping them offer consistent user experience regardless of the browser environment the user is using. In February 2024, a Chinese company bought the domain polyfill.io and the Github account associated with it. Since then, they’ve been serving malware via cdn.polyfill.io as pointed by the team at Sansec.

Earlier this year, a Chinese company named Funnull acquired the polyfillio. Due to this acquisition, this code was used to redirect mobile visitors to scam sites. Over 100,000 websites using the previously popular Polyfill JS open-source project are vulnerable to attacks that redirect traffic to sports betting and pornography sites.

In 2021, Amazon suffered a financial setback of around $34 million due to a one-hour system outage that led to a considerable loss in sales. Meta suffered a loss of nearly $100M because of Facebook’s 2021 outage. The consequences of downtime can be severe, and businesses of all sizes and governments can be affected. A DDoS attack can bring a business to a complete standstill for hours, leading to a substantial loss in revenue.

A critical exploit just hit the scene, targeting cdn.polyfill.io, a popular domain for polyfills. Over 110,000 websites have been compromised by this attack, embedding malware into JavaScript assets. But don’t worry, we’ve got your back.

Do you remember the last time you didn’t have water? Reliable water delivery is something many of us take for granted. Our local water treatment plant sits at the edge of our neighborhood, and I pass it every day on my way to take the kids to school. Not a lot seems to go on there, so it never occurred to me that I should be concerned about an attack on this critical infrastructure. What does occur to me is the possibility of a cyberattack on our water system.

CDK Global, a company that provides software for thousands of auto dealers, was hit by back-to-back cyberattacks on June 19. These attacks led to an outage that continued to impact many of their sales operations on Friday, according to the Associated Press. CDK told multiple news outlets that it is "actively investigating a cyber incident," and the company shut down all of its systems out of an abundance of caution.

Here’s what you need to know about the progression of the Polyfill supply chain attack and how to respond.

The recent attack on Snowflake accounts underscores a critical lesson for all cloud users: securely managing identities and access is paramount under the shared responsibility model. As more organizations leverage cloud services, it’s essential to understand that security is a collaborative effort between the service provider and the customer.

The Sansec.io research team warned today that a script from the polyfill.io domain and service, which was purchased earlier this year by a Chinese company named ‘Funnull’, has been modified to introduce malicious code on websites in a supply chain attack. Currently over 100,000 sites could be impacted.

Recent research by Trustwave SpiderLabs, detailed in their newly published report "2024 Professional Services Threat Landscape: Trustwave Threat Intelligence Briefing and Mitigation Strategies," reveals a surge in ransomware, supply chain, and technologically sophisticated attacks aimed at the professional services industry.