Initial Access Broker Phishing
Cisco has disclosed a security incident that occurred as a result of sophisticated voice phishing attacks that targeted employees, according to researchers at Cisco Talos. The researchers believe the attack was carried out by an initial access broker with the intent of selling access to the compromised accounts to other threat actors.
“On May 24, 2022, Cisco identified a security incident targeting Cisco corporate IT infrastructure, and we took immediate action to contain and eradicate the bad actors,” Cisco said in a statement. “In addition, we have taken steps to remediate the impact of the incident and further harden our IT environment. No ransomware has been observed or deployed and Cisco has successfully blocked attempts to access Cisco’s network since discovering the incident.
Cisco did not identify any impact to our business as a result of this incident, including no impact to any Cisco products or services, sensitive customer data or sensitive employee information, Cisco intellectual property, or supply chain operations. On August 10 the bad actors published a list of files from this security incident to the dark web.”
Cisco Talos explains that the attackers first gained access to Cisco’s networks after hacking an employee’s personal Google account, then stole the employee’s Cisco passwords via Google Chrome’s password syncing feature. The attackers then used various social engineering tactics to expand their access.
“After obtaining the user’s credentials, the attacker attempted to bypass multifactor authentication (MFA) using a variety of techniques, including voice phishing (aka “vishing”) and MFA fatigue, the process of sending a high volume of push requests to the target’s mobile device until the user accepts, either accidentally or simply to attempt to silence the repeated push notifications they are receiving,” Cisco Talos says.
“Vishing is an increasingly common social engineering technique whereby attackers try to trick employees into divulging sensitive information over the phone. In this instance, an employee reported that they received multiple calls over several days in which the callers – who spoke in English with various international accents and dialects – purported to be associated with support organizations trusted by the user.”
New-school security awareness training can teach your employees to follow security best practices so they can thwart social engineering attacks.
Read our recent blog article on the confirmation on the attack, and coverage from IT World Canada on Roger A. Grimes presentation on MFA. Cisco Talos has the full 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.
Here’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
PS: Don’t like to click on redirected buttons? Cut & Paste this link in your browser: https://info.knowbe4.com/phishing-security-test-partner?partnerid=001a000001lWEoJAAW