In recent days, our team at DarkHorse IT has been alerted to a significant cybersecurity threat affecting nearly everyone using the internet. The firewalls we monitor, including our own, have detected and blocked numerous attempts to connect to a site called polyfill.io. This site, once a trusted resource for web developers, has now been flagged as malicious. Here’s what you need to know to stay safe.
What is Polyfill.io?
Polyfill.io is a JavaScript library that developers have used to ensure their websites function properly on older web browsers. It provides pieces of code, known as polyfills, that add modern features to these older browsers. This makes sure that all users, regardless of their browser version, have a smooth and consistent web experience.
The Emerging Threat
Recently, security researchers have discovered that the polyfill.io domain has been compromised. A suspicious organization, believed to be based in China, acquired the domain and has been using it to distribute malicious code. This means that websites relying on Polyfill.io might unknowingly serve harmful scripts to their visitors.
Why This Matters to You
Even if you don’t develop websites or write code, this threat is significant because it can affect anyone browsing the internet. Our Watchguard Fireboxes, which protect our clients’ networks, have been actively blocking these malicious attempts. However, the fact that all our firewalls are detecting and blocking these threats indicates a widespread issue. If our firewalls are blocking it, then just about everyone using the internet is at risk of exposure.
How to Protect Yourself
- Get a Firewall with DNS Protection: A firewall with DNS protection can block malicious domains like polyfill.io. Depending on your browser, you can also manually block this domain.
- Use State-of-the-Art Security Software: Invest in robust security solutions like SentinelOne, our preferred choice. This software offers advanced protection against a wide range of cyber threats.
- Adopt Enterprise-Grade Security: In today’s digital landscape, both home and work environments need “enterprise-grade” security measures. Ensure your systems are equipped to handle sophisticated threats.
Conclusion
The compromise of Polyfill.io underscores the importance of robust cybersecurity measures. While our managed services are actively protecting our clients, it’s crucial for everyone to remain vigilant and informed about potential threats. At DarkHorse IT, we are dedicated to ensuring your digital safety. If you have any concerns or need further assistance, please don’t hesitate to contact us.
For more in-depth discussions on cybersecurity topics, tune in to our weekly radio segment on KFGO in Fargo, ND, every Friday from 7:35 am to 7:50 am, and check out our blog at DarkHorse IT Blog.
Stay safe online! 🛡️ #CyberSecurity #DarkHorseIT #FirewallProtection #StaySafeOnline
Feel free to reach out if you have any questions or need personalized advice on this matter. Your security is our priority at DarkHorse IT.