Phishing Campaign Targets GitHub Users

Phishing Campaign TargetingGitHub has issued an alert warning of a phishing campaign targeting users by impersonating the popular DevOps tool CircleCI, BleepingComputer reports. The phishing emails inform users that they’ll need to click on a link and log into their GitHub account in order to review CircleCI’s new terms of service. The phishing site is designed to harvest credentials as well as time-based one-time-password (TOTP) authentication codes.

“Clicking the link takes the user to a phishing site that looks like the GitHub login page but steals any credentials entered,” GitHub says. “For users with TOTP-based two-factor authentication (2FA) enabled, the phishing site also relays any TOTP codes to the threat actor and GitHub in real time, allowing the threat actor to break into accounts protected by TOTP-based 2FA. Accounts protected by hardware security keys are not vulnerable to this attack.”

GitHub says “the campaign has impacted many victim organizations.” The alert outlines the following actions taken by the attacker after compromising an account:

  • “If the threat actor successfully steals GitHub user account credentials, they may quickly create GitHub personal access tokens (PATs), authorize OAuth applications, or add SSH keys to the account in order to preserve access in the event that the user changes their password.
  • “In many cases, the threat actor immediately downloads private repository contents accessible to the compromised user, including those owned by organization accounts and other collaborators.
  • “The threat actor uses VPN or proxy providers to download private repository data via compromised user accounts.
  • “If a compromised account has organization management permissions, the threat actor may create new GitHub user accounts and add them to an organization in an effort to establish persistence.”

CircleCI issued the following statement on the campaign:

“CircleCI will not require users to login to review any updates to Our Terms of Service. Additionally, these phishing attempts include links that send users to circle-ci[.]com, which is not owned by CircleCI. Any emails from CircleCI should only include links to 52 or its sub-domains. If you believe you or someone on your team may have accidentally clicked a link in this email, please immediately rotate your credentials for both GitHub and CircleCI, and audit your systems for any unauthorized activity.”

New-school security awareness training can enable your employees to recognize phishing attempts.

BleepingComputer has the story.

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:

Topics: Phishing

Subscribe To Our Blog

Ransomware Hostage Rescue Manual

Get the latest about social engineering

Subscribe to CyberheistNews