NameCheap’s SendGrid Email Account Compromised, Used to Send Phishing Emails

Stu Sjouwerman | Mar 1, 2023

NameCheap Phishing EmailsSince phishing attacks need legitimacy to increase their deliverability, this latest twist shows how phishing scammers and hackers are working together to ensure phishing attacks continue.

Historically, we’ve seen phishing attacks simply leverage a legitimate service (e.g., google, Microsoft 365, etc.) to send emails and host phishing web pages. But, last month we saw an attack combination that was certainly unusual. Domain Hosting provider, Namecheap’s email service SendGrid was hacked in an effort to use the compromised email access so delivery of phishing would be all but guaranteed.

The attack was first noted on Twitter on February 7th:

Emails impersonating DHL and MetaMask were sent out, soliciting personal information, payment details, and logon credentials. Namecheap themselves acknowledged an “upstream” attack (likely not wanting to bad mouth their email partner SendGrid) on February 12th.

Source: Twitter

According to BleepingComputer, who received some of the phishing emails, the attacks also used NameCheap servers to host the spoofed phishing pages.

Cybercriminals are always looking for ways to establish legitimacy. And given the cybercrime ecosystem that exists, it’s not too far-fetched to think that this kind of attack could become a business model.

Topics: Phishing

Discover Your Organization’s Phish-prone™ Percentage

Ninety-one percent of data breaches begin with spear phishing. Launch our Free Phishing Security Test for up to 100 users to uncover your team's vulnerability and see how your security posture stacks up against industry benchmarks.

Get Your Free Phishing Security Test

Secure the Digital Workforce: Human + AI

KnowBe4 empowers the modern workforce to make smarter security decisions every day. Trusted by more than 70,000 organizations worldwide, KnowBe4 is the pioneer of digital workforce security, securing both AI agents and humans. The KnowBe4 Platform provides attack simulation and training, collaboration security, and agent security powered by AIDA (Artificial Intelligence Defense Agents) and a proprietary Risk Score. The platform leverages 15 years of behavioral data to combat advanced threats including social engineering, prompt injection, and shadow AI. By securing humans and agents, KnowBe4 leads the industry in workforce trust and defense.