New Transparent Phishing Attacks Leverage Cloudflare Worker Serverless Computing



Phishing TechniqueAn increasing number of phishing campaigns from several threat groups are being tracked as they leverage legitimate Cloudflare services as part of account compromise attacks.

Security analysts at Netskope take an expository look at the misuse of Cloudflare services for the purpose of enabling phishing attacks that leverage HTML Smuggling and Transparent Phishing tactics.

We’ve seen HTML Smuggling attacks for several years, including its continued use this year. The new kid on the threat tactic block is Transparent Phishing. This is an adversary-in-the-middle method of phishing, where the attacker creates a server that acts as a proxy server between the authenticating service and the victim.

According to Netskope, analysis has been traced to legitimate cloud service Cloudflare’s Cloudflare Workers, a platform that enables its users to execute serverless functions, including serving web pages to its visitors. Threat actors use Workers to act as that adversary in the middle, capturing the victim’s logon requests, credential submissions, MFA requests, etc.

The only way for organizations to stop such attacks is to rely on users to be vigilant of websites, paying specific attention to the URLs – something emphasized in new-school security awareness training.

With users paying attention, threat actors can use every trick in the book and the still won’t fool a user into thinking an email of a logon is legitimate – thereby rendering an attack powerless.

KnowBe4 empowers your workforce to make smarter security decisions every day. Over 65,000 organizations worldwide trust the KnowBe4 platform to strengthen their security culture and reduce human risk.


Free Phishing Security Test

Would your users fall for convincing phishing attacks? Take the first step now and find out before bad actors do. Plus, see how you stack up against your peers with phishing Industry Benchmarks. The Phish-prone percentage is usually higher than you expect and is great ammo to get budget.

PST ResultsHere's how it works:

  • Immediately start your test for up to 100 users (no need to talk to anyone)
  • Select from 20+ languages and customize the phishing test template based on your environment
  • Choose the landing page your users see after they click
  • Show users which red flags they missed, or a 404 page
  • Get a PDF emailed to you in 24 hours with your Phish-prone % and charts to share with management
  • See how your organization compares to others in your industry

Go Phishing Now!

PS: Don't like to click on redirected buttons? Cut & Paste this link in your browser:

https://www.knowbe4.com/phishing-security-test-offer



Subscribe to Our Blog


Comprehensive Anti-Phishing Guide




Get the latest about social engineering

Subscribe to CyberheistNews